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Author SHA1 Message Date
rmeng
24526bda4c patch 2024-05-15 13:44:27 -04:00
306 changed files with 12647 additions and 33521 deletions

22
.bumpversion.cfg Normal file
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@@ -0,0 +1,22 @@
[bumpversion]
current_version = 0.4.20
commit = True
message = Bump version: {current_version} → {new_version}
tag = True
tag_name = v{new_version}
[bumpversion:file:node/package.json]
[bumpversion:file:nodejs/package.json]
[bumpversion:file:nodejs/npm/darwin-x64/package.json]
[bumpversion:file:nodejs/npm/darwin-arm64/package.json]
[bumpversion:file:nodejs/npm/linux-x64-gnu/package.json]
[bumpversion:file:nodejs/npm/linux-arm64-gnu/package.json]
[bumpversion:file:rust/ffi/node/Cargo.toml]
[bumpversion:file:rust/lancedb/Cargo.toml]

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@@ -1,57 +0,0 @@
[tool.bumpversion]
current_version = "0.10.0-beta.0"
parse = """(?x)
(?P<major>0|[1-9]\\d*)\\.
(?P<minor>0|[1-9]\\d*)\\.
(?P<patch>0|[1-9]\\d*)
(?:-(?P<pre_l>[a-zA-Z-]+)\\.(?P<pre_n>0|[1-9]\\d*))?
"""
serialize = [
"{major}.{minor}.{patch}-{pre_l}.{pre_n}",
"{major}.{minor}.{patch}",
]
search = "{current_version}"
replace = "{new_version}"
regex = false
ignore_missing_version = false
ignore_missing_files = false
tag = true
sign_tags = false
tag_name = "v{new_version}"
tag_message = "Bump version: {current_version} → {new_version}"
allow_dirty = true
commit = true
message = "Bump version: {current_version} → {new_version}"
commit_args = ""
[tool.bumpversion.parts.pre_l]
values = ["beta", "final"]
optional_value = "final"
[[tool.bumpversion.files]]
filename = "node/package.json"
search = "\"version\": \"{current_version}\","
replace = "\"version\": \"{new_version}\","
[[tool.bumpversion.files]]
filename = "nodejs/package.json"
search = "\"version\": \"{current_version}\","
replace = "\"version\": \"{new_version}\","
# nodejs binary packages
[[tool.bumpversion.files]]
glob = "nodejs/npm/*/package.json"
search = "\"version\": \"{current_version}\","
replace = "\"version\": \"{new_version}\","
# Cargo files
# ------------
[[tool.bumpversion.files]]
filename = "rust/ffi/node/Cargo.toml"
search = "\nversion = \"{current_version}\""
replace = "\nversion = \"{new_version}\""
[[tool.bumpversion.files]]
filename = "rust/lancedb/Cargo.toml"
search = "\nversion = \"{current_version}\""
replace = "\nversion = \"{new_version}\""

25
.github/release.yml vendored Normal file
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@@ -0,0 +1,25 @@
# TODO: create separate templates for Python and other releases.
changelog:
exclude:
labels:
- ci
- chore
categories:
- title: Breaking Changes 🛠
labels:
- breaking-change
- title: New Features 🎉
labels:
- enhancement
- title: Bug Fixes 🐛
labels:
- bug
- title: Documentation 📚
labels:
- documentation
- title: Performance Improvements 🚀
labels:
- performance
- title: Other Changes
labels:
- "*"

View File

@@ -1,41 +0,0 @@
{
"ignore_labels": ["chore"],
"pr_template": "- ${{TITLE}} by @${{AUTHOR}} in ${{URL}}",
"categories": [
{
"title": "## 🏆 Highlights",
"labels": ["highlight"]
},
{
"title": "## 🛠 Breaking Changes",
"labels": ["breaking-change"]
},
{
"title": "## ⚠️ Deprecations ",
"labels": ["deprecation"]
},
{
"title": "## 🎉 New Features",
"labels": ["enhancement"]
},
{
"title": "## 🐛 Bug Fixes",
"labels": ["bug"]
},
{
"title": "## 📚 Documentation",
"labels": ["documentation"]
},
{
"title": "## 🚀 Performance Improvements",
"labels": ["performance"]
},
{
"title": "## Other Changes"
},
{
"title": "## 🔧 Build and CI",
"labels": ["ci"]
}
]
}

View File

@@ -46,7 +46,6 @@ runs:
with:
command: build
working-directory: python
docker-options: "-e PIP_EXTRA_INDEX_URL=https://pypi.fury.io/lancedb/"
target: aarch64-unknown-linux-gnu
manylinux: ${{ inputs.manylinux }}
args: ${{ inputs.args }}

View File

@@ -21,6 +21,5 @@ runs:
with:
command: build
args: ${{ inputs.args }}
docker-options: "-e PIP_EXTRA_INDEX_URL=https://pypi.fury.io/lancedb/"
working-directory: python
interpreter: 3.${{ inputs.python-minor-version }}

View File

@@ -26,7 +26,6 @@ runs:
with:
command: build
args: ${{ inputs.args }}
docker-options: "-e PIP_EXTRA_INDEX_URL=https://pypi.fury.io/lancedb/"
working-directory: python
- uses: actions/upload-artifact@v3
with:

View File

@@ -1,12 +1,8 @@
name: Cargo Publish
on:
push:
tags-ignore:
# We don't publish pre-releases for Rust. Crates.io is just a source
# distribution, so we don't need to publish pre-releases.
- 'v*-beta*'
- '*-v*' # for example, python-vX.Y.Z
release:
types: [ published ]
env:
# This env var is used by Swatinem/rust-cache@v2 for the cache

View File

@@ -24,7 +24,7 @@ env:
jobs:
test-python:
name: Test doc python code
runs-on: "warp-ubuntu-latest-x64-4x"
runs-on: "buildjet-8vcpu-ubuntu-2204"
steps:
- name: Checkout
uses: actions/checkout@v4
@@ -56,7 +56,7 @@ jobs:
for d in *; do cd "$d"; echo "$d".py; python "$d".py; cd ..; done
test-node:
name: Test doc nodejs code
runs-on: "warp-ubuntu-latest-x64-4x"
runs-on: "buildjet-8vcpu-ubuntu-2204"
timeout-minutes: 60
strategy:
fail-fast: false

View File

@@ -1,113 +0,0 @@
name: Build and Run Java JNI Tests
on:
push:
branches:
- main
paths:
- java/**
pull_request:
paths:
- java/**
- rust/**
- .github/workflows/java.yml
env:
# This env var is used by Swatinem/rust-cache@v2 for the cache
# key, so we set it to make sure it is always consistent.
CARGO_TERM_COLOR: always
# Disable full debug symbol generation to speed up CI build and keep memory down
# "1" means line tables only, which is useful for panic tracebacks.
RUSTFLAGS: "-C debuginfo=1"
RUST_BACKTRACE: "1"
# according to: https://matklad.github.io/2021/09/04/fast-rust-builds.html
# CI builds are faster with incremental disabled.
CARGO_INCREMENTAL: "0"
CARGO_BUILD_JOBS: "1"
jobs:
linux-build-java-11:
runs-on: ubuntu-22.04
name: ubuntu-22.04 + Java 11
defaults:
run:
working-directory: ./java
steps:
- name: Checkout repository
uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
with:
workspaces: java/core/lancedb-jni
- name: Run cargo fmt
run: cargo fmt --check
working-directory: ./java/core/lancedb-jni
- name: Install dependencies
run: |
sudo apt update
sudo apt install -y protobuf-compiler libssl-dev
- name: Install Java 11
uses: actions/setup-java@v4
with:
distribution: temurin
java-version: 11
cache: "maven"
- name: Java Style Check
run: mvn checkstyle:check
# Disable because of issues in lancedb rust core code
# - name: Rust Clippy
# working-directory: java/core/lancedb-jni
# run: cargo clippy --all-targets -- -D warnings
- name: Running tests with Java 11
run: mvn clean test
linux-build-java-17:
runs-on: ubuntu-22.04
name: ubuntu-22.04 + Java 17
defaults:
run:
working-directory: ./java
steps:
- name: Checkout repository
uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
with:
workspaces: java/core/lancedb-jni
- name: Run cargo fmt
run: cargo fmt --check
working-directory: ./java/core/lancedb-jni
- name: Install dependencies
run: |
sudo apt update
sudo apt install -y protobuf-compiler libssl-dev
- name: Install Java 17
uses: actions/setup-java@v4
with:
distribution: temurin
java-version: 17
cache: "maven"
- run: echo "JAVA_17=$JAVA_HOME" >> $GITHUB_ENV
- name: Java Style Check
run: mvn checkstyle:check
# Disable because of issues in lancedb rust core code
# - name: Rust Clippy
# working-directory: java/core/lancedb-jni
# run: cargo clippy --all-targets -- -D warnings
- name: Running tests with Java 17
run: |
export JAVA_TOOL_OPTIONS="$JAVA_TOOL_OPTIONS \
-XX:+IgnoreUnrecognizedVMOptions \
--add-opens=java.base/java.lang=ALL-UNNAMED \
--add-opens=java.base/java.lang.invoke=ALL-UNNAMED \
--add-opens=java.base/java.lang.reflect=ALL-UNNAMED \
--add-opens=java.base/java.io=ALL-UNNAMED \
--add-opens=java.base/java.net=ALL-UNNAMED \
--add-opens=java.base/java.nio=ALL-UNNAMED \
--add-opens=java.base/java.util=ALL-UNNAMED \
--add-opens=java.base/java.util.concurrent=ALL-UNNAMED \
--add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED \
--add-opens=java.base/jdk.internal.ref=ALL-UNNAMED \
--add-opens=java.base/sun.nio.ch=ALL-UNNAMED \
--add-opens=java.base/sun.nio.cs=ALL-UNNAMED \
--add-opens=java.base/sun.security.action=ALL-UNNAMED \
--add-opens=java.base/sun.util.calendar=ALL-UNNAMED \
--add-opens=java.security.jgss/sun.security.krb5=ALL-UNNAMED \
-Djdk.reflect.useDirectMethodHandle=false \
-Dio.netty.tryReflectionSetAccessible=true"
JAVA_HOME=$JAVA_17 mvn clean test

View File

@@ -1,62 +1,37 @@
name: Create release commit
# This workflow increments versions, tags the version, and pushes it.
# When a tag is pushed, another workflow is triggered that creates a GH release
# and uploads the binaries. This workflow is only for creating the tag.
# This script will enforce that a minor version is incremented if there are any
# breaking changes since the last minor increment. However, it isn't able to
# differentiate between breaking changes in Node versus Python. If you wish to
# bypass this check, you can manually increment the version and push the tag.
on:
workflow_dispatch:
inputs:
dry_run:
description: 'Dry run (create the local commit/tags but do not push it)'
required: true
default: false
type: boolean
type:
description: 'What kind of release is this?'
required: true
default: 'preview'
default: "false"
type: choice
options:
- preview
- stable
python:
description: 'Make a Python release'
- "true"
- "false"
part:
description: 'What kind of release is this?'
required: true
default: true
type: boolean
other:
description: 'Make a Node/Rust release'
required: true
default: true
type: boolean
bump-minor:
description: 'Bump minor version'
required: true
default: false
type: boolean
default: 'patch'
type: choice
options:
- patch
- minor
- major
jobs:
make-release:
# Creates tag and GH release. The GH release will trigger the build and release jobs.
bump-version:
runs-on: ubuntu-latest
permissions:
contents: write
steps:
- name: Output Inputs
run: echo "${{ toJSON(github.event.inputs) }}"
- uses: actions/checkout@v4
- name: Check out main
uses: actions/checkout@v4
with:
ref: main
persist-credentials: false
fetch-depth: 0
lfs: true
# It's important we use our token here, as the default token will NOT
# trigger any workflows watching for new tags. See:
# https://docs.github.com/en/actions/using-workflows/triggering-a-workflow#triggering-a-workflow-from-a-workflow
token: ${{ secrets.LANCEDB_RELEASE_TOKEN }}
- name: Set git configs for bumpversion
shell: bash
run: |
@@ -66,34 +41,19 @@ jobs:
uses: actions/setup-python@v5
with:
python-version: "3.11"
- name: Bump Python version
if: ${{ inputs.python }}
working-directory: python
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
- name: Bump version, create tag and commit
run: |
# Need to get the commit before bumping the version, so we can
# determine if there are breaking changes in the next step as well.
echo "COMMIT_BEFORE_BUMP=$(git rev-parse HEAD)" >> $GITHUB_ENV
pip install bump-my-version PyGithub packaging
bash ../ci/bump_version.sh ${{ inputs.type }} ${{ inputs.bump-minor }} python-v
- name: Bump Node/Rust version
if: ${{ inputs.other }}
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
run: |
pip install bump-my-version PyGithub packaging
bash ci/bump_version.sh ${{ inputs.type }} ${{ inputs.bump-minor }} v $COMMIT_BEFORE_BUMP
- name: Push new version tag
if: ${{ !inputs.dry_run }}
pip install bump2version
bumpversion --verbose ${{ inputs.part }}
- name: Push new version and tag
if: ${{ inputs.dry_run }} == "false"
uses: ad-m/github-push-action@master
with:
# Need to use PAT here too to trigger next workflow. See comment above.
github_token: ${{ secrets.LANCEDB_RELEASE_TOKEN }}
branch: ${{ github.ref }}
branch: main
tags: true
- uses: ./.github/workflows/update_package_lock
if: ${{ !inputs.dry_run && inputs.other }}
if: ${{ inputs.dry_run }} == "false"
with:
github_token: ${{ secrets.GITHUB_TOKEN }}
github_token: ${{ secrets.LANCEDB_RELEASE_TOKEN }}

View File

@@ -1,13 +1,11 @@
name: NPM Publish
on:
push:
tags:
- "v*"
release:
types: [published]
jobs:
node:
name: vectordb Typescript
runs-on: ubuntu-latest
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -40,7 +38,6 @@ jobs:
node/vectordb-*.tgz
node-macos:
name: vectordb ${{ matrix.config.arch }}
strategy:
matrix:
config:
@@ -71,7 +68,6 @@ jobs:
node/dist/lancedb-vectordb-darwin*.tgz
nodejs-macos:
name: lancedb ${{ matrix.config.arch }}
strategy:
matrix:
config:
@@ -102,7 +98,7 @@ jobs:
nodejs/dist/*.node
node-linux:
name: vectordb (${{ matrix.config.arch}}-unknown-linux-gnu)
name: node-linux (${{ matrix.config.arch}}-unknown-linux-gnu
runs-on: ${{ matrix.config.runner }}
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -114,11 +110,12 @@ jobs:
runner: ubuntu-latest
- arch: aarch64
# For successful fat LTO builds, we need a large runner to avoid OOM errors.
runner: warp-ubuntu-latest-arm64-4x
runner: buildjet-16vcpu-ubuntu-2204-arm
steps:
- name: Checkout
uses: actions/checkout@v4
# To avoid OOM errors on ARM, we create a swap file.
# Buildjet aarch64 runners have only 1.5 GB RAM per core, vs 3.5 GB per core for
# x86_64 runners. To avoid OOM errors on ARM, we create a swap file.
- name: Configure aarch64 build
if: ${{ matrix.config.arch == 'aarch64' }}
run: |
@@ -142,7 +139,7 @@ jobs:
node/dist/lancedb-vectordb-linux*.tgz
nodejs-linux:
name: lancedb (${{ matrix.config.arch}}-unknown-linux-gnu
name: nodejs-linux (${{ matrix.config.arch}}-unknown-linux-gnu
runs-on: ${{ matrix.config.runner }}
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -193,7 +190,6 @@ jobs:
!nodejs/dist/*.node
node-windows:
name: vectordb ${{ matrix.target }}
runs-on: windows-2022
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -227,7 +223,6 @@ jobs:
node/dist/lancedb-vectordb-win32*.tgz
nodejs-windows:
name: lancedb ${{ matrix.target }}
runs-on: windows-2022
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
@@ -261,7 +256,6 @@ jobs:
nodejs/dist/*.node
release:
name: vectordb NPM Publish
needs: [node, node-macos, node-linux, node-windows]
runs-on: ubuntu-latest
# Only runs on tags that matches the make-release action
@@ -280,28 +274,12 @@ jobs:
env:
NODE_AUTH_TOKEN: ${{ secrets.LANCEDB_NPM_REGISTRY_TOKEN }}
run: |
# Tag beta as "preview" instead of default "latest". See lancedb
# npm publish step for more info.
if [[ $GITHUB_REF =~ refs/tags/v(.*)-beta.* ]]; then
PUBLISH_ARGS="--tag preview"
fi
mv */*.tgz .
for filename in *.tgz; do
npm publish $PUBLISH_ARGS $filename
npm publish $filename
done
- name: Notify Slack Action
uses: ravsamhq/notify-slack-action@2.3.0
if: ${{ always() }}
with:
status: ${{ job.status }}
notify_when: "failure"
notification_title: "{workflow} is failing"
env:
SLACK_WEBHOOK_URL: ${{ secrets.ACTION_MONITORING_SLACK }}
release-nodejs:
name: lancedb NPM Publish
needs: [nodejs-macos, nodejs-linux, nodejs-windows]
runs-on: ubuntu-latest
# Only runs on tags that matches the make-release action
@@ -338,32 +316,11 @@ jobs:
- name: Publish to NPM
env:
NODE_AUTH_TOKEN: ${{ secrets.LANCEDB_NPM_REGISTRY_TOKEN }}
# By default, things are published to the latest tag. This is what is
# installed by default if the user does not specify a version. This is
# good for stable releases, but for pre-releases, we want to publish to
# the "preview" tag so they can install with `npm install lancedb@preview`.
# See: https://medium.com/@mbostock/prereleases-and-npm-e778fc5e2420
run: |
if [[ $GITHUB_REF =~ refs/tags/v(.*)-beta.* ]]; then
npm publish --access public --tag preview
else
npm publish --access public
fi
- name: Notify Slack Action
uses: ravsamhq/notify-slack-action@2.3.0
if: ${{ always() }}
with:
status: ${{ job.status }}
notify_when: "failure"
notification_title: "{workflow} is failing"
env:
SLACK_WEBHOOK_URL: ${{ secrets.ACTION_MONITORING_SLACK }}
run: npm publish --access public
update-package-lock:
needs: [release]
runs-on: ubuntu-latest
permissions:
contents: write
steps:
- name: Checkout
uses: actions/checkout@v4
@@ -374,13 +331,11 @@ jobs:
lfs: true
- uses: ./.github/workflows/update_package_lock
with:
github_token: ${{ secrets.GITHUB_TOKEN }}
github_token: ${{ secrets.LANCEDB_RELEASE_TOKEN }}
update-package-lock-nodejs:
needs: [release-nodejs]
runs-on: ubuntu-latest
permissions:
contents: write
steps:
- name: Checkout
uses: actions/checkout@v4
@@ -391,70 +346,4 @@ jobs:
lfs: true
- uses: ./.github/workflows/update_package_lock_nodejs
with:
github_token: ${{ secrets.GITHUB_TOKEN }}
gh-release:
runs-on: ubuntu-latest
permissions:
contents: write
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Extract version
id: extract_version
env:
GITHUB_REF: ${{ github.ref }}
run: |
set -e
echo "Extracting tag and version from $GITHUB_REF"
if [[ $GITHUB_REF =~ refs/tags/v(.*) ]]; then
VERSION=${BASH_REMATCH[1]}
TAG=v$VERSION
echo "tag=$TAG" >> $GITHUB_OUTPUT
echo "version=$VERSION" >> $GITHUB_OUTPUT
else
echo "Failed to extract version from $GITHUB_REF"
exit 1
fi
echo "Extracted version $VERSION from $GITHUB_REF"
if [[ $VERSION =~ beta ]]; then
echo "This is a beta release"
# Get last release (that is not this one)
FROM_TAG=$(git tag --sort='version:refname' \
| grep ^v \
| grep -vF "$TAG" \
| python ci/semver_sort.py v \
| tail -n 1)
else
echo "This is a stable release"
# Get last stable tag (ignore betas)
FROM_TAG=$(git tag --sort='version:refname' \
| grep ^v \
| grep -vF "$TAG" \
| grep -v beta \
| python ci/semver_sort.py v \
| tail -n 1)
fi
echo "Found from tag $FROM_TAG"
echo "from_tag=$FROM_TAG" >> $GITHUB_OUTPUT
- name: Create Release Notes
id: release_notes
uses: mikepenz/release-changelog-builder-action@v4
with:
configuration: .github/release_notes.json
toTag: ${{ steps.extract_version.outputs.tag }}
fromTag: ${{ steps.extract_version.outputs.from_tag }}
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
- name: Create GH release
uses: softprops/action-gh-release@v2
with:
prerelease: ${{ contains('beta', github.ref) }}
tag_name: ${{ steps.extract_version.outputs.tag }}
token: ${{ secrets.GITHUB_TOKEN }}
generate_release_notes: false
name: Node/Rust LanceDB v${{ steps.extract_version.outputs.version }}
body: ${{ steps.release_notes.outputs.changelog }}
github_token: ${{ secrets.LANCEDB_RELEASE_TOKEN }}

View File

@@ -1,16 +1,18 @@
name: PyPI Publish
on:
push:
tags:
- 'python-v*'
release:
types: [published]
jobs:
linux:
# Only runs on tags that matches the python-make-release action
if: startsWith(github.ref, 'refs/tags/python-v')
name: Python ${{ matrix.config.platform }} manylinux${{ matrix.config.manylinux }}
timeout-minutes: 60
strategy:
matrix:
python-minor-version: ["8"]
config:
- platform: x86_64
manylinux: "2_17"
@@ -32,22 +34,25 @@ jobs:
- name: Set up Python
uses: actions/setup-python@v4
with:
python-version: 3.8
python-version: 3.${{ matrix.python-minor-version }}
- uses: ./.github/workflows/build_linux_wheel
with:
python-minor-version: 8
python-minor-version: ${{ matrix.python-minor-version }}
args: "--release --strip ${{ matrix.config.extra_args }}"
arm-build: ${{ matrix.config.platform == 'aarch64' }}
manylinux: ${{ matrix.config.manylinux }}
- uses: ./.github/workflows/upload_wheel
with:
pypi_token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
fury_token: ${{ secrets.FURY_TOKEN }}
token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
repo: "pypi"
mac:
# Only runs on tags that matches the python-make-release action
if: startsWith(github.ref, 'refs/tags/python-v')
timeout-minutes: 60
runs-on: ${{ matrix.config.runner }}
strategy:
matrix:
python-minor-version: ["8"]
config:
- target: x86_64-apple-darwin
runner: macos-13
@@ -58,6 +63,7 @@ jobs:
steps:
- uses: actions/checkout@v4
with:
ref: ${{ inputs.ref }}
fetch-depth: 0
lfs: true
- name: Set up Python
@@ -66,95 +72,38 @@ jobs:
python-version: 3.12
- uses: ./.github/workflows/build_mac_wheel
with:
python-minor-version: 8
python-minor-version: ${{ matrix.python-minor-version }}
args: "--release --strip --target ${{ matrix.config.target }} --features fp16kernels"
- uses: ./.github/workflows/upload_wheel
with:
pypi_token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
fury_token: ${{ secrets.FURY_TOKEN }}
python-minor-version: ${{ matrix.python-minor-version }}
token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
repo: "pypi"
windows:
# Only runs on tags that matches the python-make-release action
if: startsWith(github.ref, 'refs/tags/python-v')
timeout-minutes: 60
runs-on: windows-latest
strategy:
matrix:
python-minor-version: ["8"]
steps:
- uses: actions/checkout@v4
with:
ref: ${{ inputs.ref }}
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v4
with:
python-version: 3.8
python-version: 3.${{ matrix.python-minor-version }}
- uses: ./.github/workflows/build_windows_wheel
with:
python-minor-version: 8
python-minor-version: ${{ matrix.python-minor-version }}
args: "--release --strip"
vcpkg_token: ${{ secrets.VCPKG_GITHUB_PACKAGES }}
- uses: ./.github/workflows/upload_wheel
with:
pypi_token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
fury_token: ${{ secrets.FURY_TOKEN }}
gh-release:
runs-on: ubuntu-latest
permissions:
contents: write
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Extract version
id: extract_version
env:
GITHUB_REF: ${{ github.ref }}
run: |
set -e
echo "Extracting tag and version from $GITHUB_REF"
if [[ $GITHUB_REF =~ refs/tags/python-v(.*) ]]; then
VERSION=${BASH_REMATCH[1]}
TAG=python-v$VERSION
echo "tag=$TAG" >> $GITHUB_OUTPUT
echo "version=$VERSION" >> $GITHUB_OUTPUT
else
echo "Failed to extract version from $GITHUB_REF"
exit 1
fi
echo "Extracted version $VERSION from $GITHUB_REF"
if [[ $VERSION =~ beta ]]; then
echo "This is a beta release"
# Get last release (that is not this one)
FROM_TAG=$(git tag --sort='version:refname' \
| grep ^python-v \
| grep -vF "$TAG" \
| python ci/semver_sort.py python-v \
| tail -n 1)
else
echo "This is a stable release"
# Get last stable tag (ignore betas)
FROM_TAG=$(git tag --sort='version:refname' \
| grep ^python-v \
| grep -vF "$TAG" \
| grep -v beta \
| python ci/semver_sort.py python-v \
| tail -n 1)
fi
echo "Found from tag $FROM_TAG"
echo "from_tag=$FROM_TAG" >> $GITHUB_OUTPUT
- name: Create Python Release Notes
id: python_release_notes
uses: mikepenz/release-changelog-builder-action@v4
with:
configuration: .github/release_notes.json
toTag: ${{ steps.extract_version.outputs.tag }}
fromTag: ${{ steps.extract_version.outputs.from_tag }}
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
- name: Create Python GH release
uses: softprops/action-gh-release@v2
with:
prerelease: ${{ contains('beta', github.ref) }}
tag_name: ${{ steps.extract_version.outputs.tag }}
token: ${{ secrets.GITHUB_TOKEN }}
generate_release_notes: false
name: Python LanceDB v${{ steps.extract_version.outputs.version }}
body: ${{ steps.python_release_notes.outputs.changelog }}
python-minor-version: ${{ matrix.python-minor-version }}
token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
repo: "pypi"

View File

@@ -0,0 +1,56 @@
name: Python - Create release commit
on:
workflow_dispatch:
inputs:
dry_run:
description: 'Dry run (create the local commit/tags but do not push it)'
required: true
default: "false"
type: choice
options:
- "true"
- "false"
part:
description: 'What kind of release is this?'
required: true
default: 'patch'
type: choice
options:
- patch
- minor
- major
jobs:
bump-version:
runs-on: ubuntu-latest
steps:
- name: Check out main
uses: actions/checkout@v4
with:
ref: main
persist-credentials: false
fetch-depth: 0
lfs: true
- name: Set git configs for bumpversion
shell: bash
run: |
git config user.name 'Lance Release'
git config user.email 'lance-dev@lancedb.com'
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: "3.11"
- name: Bump version, create tag and commit
working-directory: python
run: |
pip install bump2version
bumpversion --verbose ${{ inputs.part }}
- name: Push new version and tag
if: ${{ inputs.dry_run }} == "false"
uses: ad-m/github-push-action@master
with:
github_token: ${{ secrets.LANCEDB_RELEASE_TOKEN }}
branch: main
tags: true

View File

@@ -33,11 +33,11 @@ jobs:
python-version: "3.11"
- name: Install ruff
run: |
pip install ruff==0.5.4
pip install ruff==0.2.2
- name: Format check
run: ruff format --check .
- name: Lint
run: ruff check .
run: ruff .
doctest:
name: "Doctest"
timeout-minutes: 30
@@ -65,7 +65,7 @@ jobs:
workspaces: python
- name: Install
run: |
pip install --extra-index-url https://pypi.fury.io/lancedb/ -e .[tests,dev,embeddings]
pip install -e .[tests,dev,embeddings]
pip install tantivy
pip install mlx
- name: Doctest
@@ -75,7 +75,7 @@ jobs:
timeout-minutes: 30
strategy:
matrix:
python-minor-version: ["9", "11"]
python-minor-version: ["8", "11"]
runs-on: "ubuntu-22.04"
defaults:
run:
@@ -189,7 +189,7 @@ jobs:
- name: Install lancedb
run: |
pip install "pydantic<2"
pip install --extra-index-url https://pypi.fury.io/lancedb/ -e .[tests]
pip install -e .[tests]
pip install tantivy
- name: Run tests
run: pytest -m "not slow and not s3_test" -x -v --durations=30 python/tests

View File

@@ -15,7 +15,7 @@ runs:
- name: Install lancedb
shell: bash
run: |
pip3 install --extra-index-url https://pypi.fury.io/lancedb/ $(ls target/wheels/lancedb-*.whl)[tests,dev]
pip3 install $(ls target/wheels/lancedb-*.whl)[tests,dev]
- name: Setup localstack for integration tests
if: ${{ inputs.integration == 'true' }}
shell: bash

View File

@@ -53,10 +53,7 @@ jobs:
run: cargo clippy --all --all-features -- -D warnings
linux:
timeout-minutes: 30
# To build all features, we need more disk space than is available
# on the GitHub-provided runner. This is mostly due to the the
# sentence-transformers feature.
runs-on: warp-ubuntu-latest-x64-4x
runs-on: ubuntu-22.04
defaults:
run:
shell: bash
@@ -77,11 +74,11 @@ jobs:
run: |
sudo apt update
sudo apt install -y protobuf-compiler libssl-dev
- name: Build
run: cargo build --all-features
- name: Start S3 integration test environment
working-directory: .
run: docker compose up --detach --wait
- name: Build
run: cargo build --all-features
- name: Run tests
run: cargo test --all-features
- name: Run examples
@@ -134,3 +131,4 @@ jobs:
$env:VCPKG_ROOT = $env:VCPKG_INSTALLATION_ROOT
cargo build
cargo test

View File

@@ -2,43 +2,28 @@ name: upload-wheel
description: "Upload wheels to Pypi"
inputs:
pypi_token:
os:
required: true
description: "ubuntu-22.04 or macos-13"
repo:
required: false
description: "pypi or testpypi"
default: "pypi"
token:
required: true
description: "release token for the repo"
fury_token:
required: true
description: "release token for the fury repo"
runs:
using: "composite"
steps:
- name: Install dependencies
shell: bash
run: |
python -m pip install --upgrade pip
pip install twine
- name: Choose repo
shell: bash
id: choose_repo
run: |
if [ ${{ github.ref }} == "*beta*" ]; then
echo "repo=fury" >> $GITHUB_OUTPUT
else
echo "repo=pypi" >> $GITHUB_OUTPUT
fi
- name: Publish to PyPI
shell: bash
env:
FURY_TOKEN: ${{ inputs.fury_token }}
PYPI_TOKEN: ${{ inputs.pypi_token }}
run: |
if [ ${{ steps.choose_repo.outputs.repo }} == "fury" ]; then
WHEEL=$(ls target/wheels/lancedb-*.whl 2> /dev/null | head -n 1)
echo "Uploading $WHEEL to Fury"
curl -f -F package=@$WHEEL https://$FURY_TOKEN@push.fury.io/lancedb/
else
twine upload --repository ${{ steps.choose_repo.outputs.repo }} \
--username __token__ \
--password $PYPI_TOKEN \
target/wheels/lancedb-*.whl
fi
- name: Install dependencies
shell: bash
run: |
python -m pip install --upgrade pip
pip install twine
- name: Publish wheel
env:
TWINE_USERNAME: __token__
TWINE_PASSWORD: ${{ inputs.token }}
shell: bash
run: twine upload --repository ${{ inputs.repo }} target/wheels/lancedb-*.whl

1
.gitignore vendored
View File

@@ -4,7 +4,6 @@
**/__pycache__
.DS_Store
venv
.venv
.vscode
.zed

View File

@@ -14,8 +14,8 @@ repos:
hooks:
- id: local-biome-check
name: biome check
entry: npx @biomejs/biome@1.8.3 check --config-path nodejs/biome.json nodejs/
entry: npx biome check
language: system
types: [text]
files: "nodejs/.*"
exclude: nodejs/lancedb/native.d.ts|nodejs/dist/.*|nodejs/examples/.*
exclude: nodejs/lancedb/native.d.ts|nodejs/dist/.*

View File

@@ -1,11 +1,5 @@
[workspace]
members = [
"rust/ffi/node",
"rust/lancedb",
"nodejs",
"python",
"java/core/lancedb-jni",
]
members = ["rust/ffi/node", "rust/lancedb", "nodejs", "python"]
# Python package needs to be built by maturin.
exclude = ["python"]
resolver = "2"
@@ -20,30 +14,27 @@ keywords = ["lancedb", "lance", "database", "vector", "search"]
categories = ["database-implementations"]
[workspace.dependencies]
lance = { "version" = "=0.16.1", "features" = ["dynamodb"] }
lance-index = { "version" = "=0.16.1" }
lance-linalg = { "version" = "=0.16.1" }
lance-testing = { "version" = "=0.16.1" }
lance-datafusion = { "version" = "=0.16.1" }
lance-encoding = { "version" = "=0.16.1" }
lance = { "version" = "=0.10.18", "features" = ["dynamodb"] }
lance-index = { "version" = "=0.10.18" }
lance-linalg = { "version" = "=0.10.18" }
lance-testing = { "version" = "=0.10.18" }
# Note that this one does not include pyarrow
arrow = { version = "52.2", optional = false }
arrow-array = "52.2"
arrow-data = "52.2"
arrow-ipc = "52.2"
arrow-ord = "52.2"
arrow-schema = "52.2"
arrow-arith = "52.2"
arrow-cast = "52.2"
arrow = { version = "51.0", optional = false }
arrow-array = "51.0"
arrow-data = "51.0"
arrow-ipc = "51.0"
arrow-ord = "51.0"
arrow-schema = "51.0"
arrow-arith = "51.0"
arrow-cast = "51.0"
async-trait = "0"
chrono = "0.4.35"
datafusion-physical-plan = "40.0"
half = { "version" = "=2.4.1", default-features = false, features = [
"num-traits",
] }
futures = "0"
log = "0.4"
object_store = "0.10.2"
object_store = "0.9.0"
pin-project = "1.0.7"
snafu = "0.7.4"
url = "2"

View File

@@ -7,8 +7,8 @@
<a href='https://github.com/lancedb/vectordb-recipes/tree/main' target="_blank"><img alt='LanceDB' src='https://img.shields.io/badge/VectorDB_Recipes-100000?style=for-the-badge&logo=LanceDB&logoColor=white&labelColor=645cfb&color=645cfb'/></a>
<a href='https://lancedb.github.io/lancedb/' target="_blank"><img alt='lancdb' src='https://img.shields.io/badge/DOCS-100000?style=for-the-badge&logo=lancdb&logoColor=white&labelColor=645cfb&color=645cfb'/></a>
[![Blog](https://img.shields.io/badge/Blog-12100E?style=for-the-badge&logoColor=white)](https://blog.lancedb.com/)
[![Discord](https://img.shields.io/badge/Discord-%235865F2.svg?style=for-the-badge&logo=discord&logoColor=white)](https://discord.gg/zMM32dvNtd)
[![Blog](https://img.shields.io/badge/Blog-12100E?style=for-the-badge&logoColor=white)](https://blog.lancedb.com/)
[![Discord](https://img.shields.io/badge/Discord-%235865F2.svg?style=for-the-badge&logo=discord&logoColor=white)](https://discord.gg/zMM32dvNtd)
[![Twitter](https://img.shields.io/badge/Twitter-%231DA1F2.svg?style=for-the-badge&logo=Twitter&logoColor=white)](https://twitter.com/lancedb)
</p>
@@ -44,24 +44,26 @@ LanceDB's core is written in Rust 🦀 and is built using <a href="https://githu
**Javascript**
```shell
npm install @lancedb/lancedb
npm install vectordb
```
```javascript
import * as lancedb from "@lancedb/lancedb";
const lancedb = require('vectordb');
const db = await lancedb.connect('data/sample-lancedb');
const db = await lancedb.connect("data/sample-lancedb");
const table = await db.createTable("vectors", [
{ id: 1, vector: [0.1, 0.2], item: "foo", price: 10 },
{ id: 2, vector: [1.1, 1.2], item: "bar", price: 50 },
], {mode: 'overwrite'});
const table = await db.createTable({
name: 'vectors',
data: [
{ id: 1, vector: [0.1, 0.2], item: "foo", price: 10 },
{ id: 2, vector: [1.1, 1.2], item: "bar", price: 50 }
]
})
const query = table.vectorSearch([0.1, 0.3]).limit(2);
const results = await query.toArray();
const query = table.search([0.1, 0.3]).limit(2);
const results = await query.execute();
// You can also search for rows by specific criteria without involving a vector search.
const rowsByCriteria = await table.query().where("price >= 10").toArray();
const rowsByCriteria = await table.search(undefined).where("price >= 10").execute();
```
**Python**
@@ -81,5 +83,5 @@ result = table.search([100, 100]).limit(2).to_pandas()
```
## Blogs, Tutorials & Videos
* 📈 <a href="https://blog.lancedb.com/benchmarking-random-access-in-lance/">2000x better performance with Lance over Parquet</a>
* 📈 <a href="https://blog.eto.ai/benchmarking-random-access-in-lance-ed690757a826">2000x better performance with Lance over Parquet</a>
* 🤖 <a href="https://github.com/lancedb/lancedb/blob/main/docs/src/notebooks/youtube_transcript_search.ipynb">Build a question and answer bot with LanceDB</a>

View File

@@ -18,4 +18,4 @@ docker run \
-v $(pwd):/io -w /io \
--memory-swap=-1 \
lancedb-node-manylinux \
bash ci/manylinux_node/build_vectordb.sh $ARCH
bash ci/manylinux_node/build.sh $ARCH

View File

@@ -4,9 +4,9 @@ ARCH=${1:-x86_64}
# We pass down the current user so that when we later mount the local files
# into the container, the files are accessible by the current user.
pushd ci/manylinux_node
pushd ci/manylinux_nodejs
docker build \
-t lancedb-node-manylinux-$ARCH \
-t lancedb-nodejs-manylinux \
--build-arg="ARCH=$ARCH" \
--build-arg="DOCKER_USER=$(id -u)" \
--progress=plain \
@@ -17,5 +17,5 @@ popd
docker run \
-v $(pwd):/io -w /io \
--memory-swap=-1 \
lancedb-node-manylinux-$ARCH \
bash ci/manylinux_node/build_lancedb.sh $ARCH
lancedb-nodejs-manylinux \
bash ci/manylinux_nodejs/build.sh $ARCH

View File

@@ -1,51 +0,0 @@
set -e
RELEASE_TYPE=${1:-"stable"}
BUMP_MINOR=${2:-false}
TAG_PREFIX=${3:-"v"} # Such as "python-v"
HEAD_SHA=${4:-$(git rev-parse HEAD)}
readonly SELF_DIR=$(cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
PREV_TAG=$(git tag --sort='version:refname' | grep ^$TAG_PREFIX | python $SELF_DIR/semver_sort.py $TAG_PREFIX | tail -n 1)
echo "Found previous tag $PREV_TAG"
# Initially, we don't want to tag if we are doing stable, because we will bump
# again later. See comment at end for why.
if [[ "$RELEASE_TYPE" == 'stable' ]]; then
BUMP_ARGS="--no-tag"
fi
# If last is stable and not bumping minor
if [[ $PREV_TAG != *beta* ]]; then
if [[ "$BUMP_MINOR" != "false" ]]; then
# X.Y.Z -> X.(Y+1).0-beta.0
bump-my-version bump -vv $BUMP_ARGS minor
else
# X.Y.Z -> X.Y.(Z+1)-beta.0
bump-my-version bump -vv $BUMP_ARGS patch
fi
else
if [[ "$BUMP_MINOR" != "false" ]]; then
# X.Y.Z-beta.N -> X.(Y+1).0-beta.0
bump-my-version bump -vv $BUMP_ARGS minor
else
# X.Y.Z-beta.N -> X.Y.Z-beta.(N+1)
bump-my-version bump -vv $BUMP_ARGS pre_n
fi
fi
# The above bump will always bump to a pre-release version. If we are releasing
# a stable version, bump the pre-release level ("pre_l") to make it stable.
if [[ $RELEASE_TYPE == 'stable' ]]; then
# X.Y.Z-beta.N -> X.Y.Z
bump-my-version bump -vv pre_l
fi
# Validate that we have incremented version appropriately for breaking changes
NEW_TAG=$(git describe --tags --exact-match HEAD)
NEW_VERSION=$(echo $NEW_TAG | sed "s/^$TAG_PREFIX//")
LAST_STABLE_RELEASE=$(git tag --sort='version:refname' | grep ^$TAG_PREFIX | grep -v beta | grep -vF "$NEW_TAG" | python $SELF_DIR/semver_sort.py $TAG_PREFIX | tail -n 1)
LAST_STABLE_VERSION=$(echo $LAST_STABLE_RELEASE | sed "s/^$TAG_PREFIX//")
python $SELF_DIR/check_breaking_changes.py $LAST_STABLE_RELEASE $HEAD_SHA $LAST_STABLE_VERSION $NEW_VERSION

View File

@@ -1,35 +0,0 @@
"""
Check whether there are any breaking changes in the PRs between the base and head commits.
If there are, assert that we have incremented the minor version.
"""
import argparse
import os
from packaging.version import parse
from github import Github
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("base")
parser.add_argument("head")
parser.add_argument("last_stable_version")
parser.add_argument("current_version")
args = parser.parse_args()
repo = Github(os.environ["GITHUB_TOKEN"]).get_repo(os.environ["GITHUB_REPOSITORY"])
commits = repo.compare(args.base, args.head).commits
prs = (pr for commit in commits for pr in commit.get_pulls())
for pr in prs:
if any(label.name == "breaking-change" for label in pr.labels):
print(f"Breaking change in PR: {pr.html_url}")
break
else:
print("No breaking changes found.")
exit(0)
last_stable_version = parse(args.last_stable_version)
current_version = parse(args.current_version)
if current_version.minor <= last_stable_version.minor:
print("Minor version is not greater than the last stable version.")
exit(1)

View File

@@ -4,7 +4,7 @@
# range of linux distributions.
ARG ARCH=x86_64
FROM quay.io/pypa/manylinux_2_28_${ARCH}
FROM quay.io/pypa/manylinux2014_${ARCH}
ARG ARCH=x86_64
ARG DOCKER_USER=default_user
@@ -18,8 +18,8 @@ COPY install_protobuf.sh install_protobuf.sh
RUN ./install_protobuf.sh ${ARCH}
ENV DOCKER_USER=${DOCKER_USER}
# Create a group and user, but only if it doesn't exist
RUN echo ${ARCH} && id -u ${DOCKER_USER} >/dev/null 2>&1 || adduser --user-group --create-home --uid ${DOCKER_USER} build_user
# Create a group and user
RUN echo ${ARCH} && adduser --user-group --create-home --uid ${DOCKER_USER} build_user
# We switch to the user to install Rust and Node, since those like to be
# installed at the user level.

View File

@@ -6,7 +6,7 @@
# /usr/bin/ld: failed to set dynamic section sizes: Bad value
set -e
git clone -b OpenSSL_1_1_1v \
git clone -b OpenSSL_1_1_1u \
--single-branch \
https://github.com/openssl/openssl.git

View File

@@ -8,7 +8,7 @@ install_node() {
source "$HOME"/.bashrc
nvm install --no-progress 18
nvm install --no-progress 16
}
install_rust() {

View File

@@ -0,0 +1,31 @@
# Many linux dockerfile with Rust, Node, and Lance dependencies installed.
# This container allows building the node modules native libraries in an
# environment with a very old glibc, so that we are compatible with a wide
# range of linux distributions.
ARG ARCH=x86_64
FROM quay.io/pypa/manylinux2014_${ARCH}
ARG ARCH=x86_64
ARG DOCKER_USER=default_user
# Install static openssl
COPY install_openssl.sh install_openssl.sh
RUN ./install_openssl.sh ${ARCH} > /dev/null
# Protobuf is also installed as root.
COPY install_protobuf.sh install_protobuf.sh
RUN ./install_protobuf.sh ${ARCH}
ENV DOCKER_USER=${DOCKER_USER}
# Create a group and user
RUN echo ${ARCH} && adduser --user-group --create-home --uid ${DOCKER_USER} build_user
# We switch to the user to install Rust and Node, since those like to be
# installed at the user level.
USER ${DOCKER_USER}
COPY prepare_manylinux_node.sh prepare_manylinux_node.sh
RUN cp /prepare_manylinux_node.sh $HOME/ && \
cd $HOME && \
./prepare_manylinux_node.sh ${ARCH}

View File

View File

@@ -0,0 +1,26 @@
#!/bin/bash
# Builds openssl from source so we can statically link to it
# this is to avoid the error we get with the system installation:
# /usr/bin/ld: <library>: version node not found for symbol SSLeay@@OPENSSL_1.0.1
# /usr/bin/ld: failed to set dynamic section sizes: Bad value
set -e
git clone -b OpenSSL_1_1_1u \
--single-branch \
https://github.com/openssl/openssl.git
pushd openssl
if [[ $1 == x86_64* ]]; then
ARCH=linux-x86_64
else
# gnu target
ARCH=linux-aarch64
fi
./Configure no-shared $ARCH
make
make install

View File

@@ -0,0 +1,15 @@
#!/bin/bash
# Installs protobuf compiler. Should be run as root.
set -e
if [[ $1 == x86_64* ]]; then
ARCH=x86_64
else
# gnu target
ARCH=aarch_64
fi
PB_REL=https://github.com/protocolbuffers/protobuf/releases
PB_VERSION=23.1
curl -LO $PB_REL/download/v$PB_VERSION/protoc-$PB_VERSION-linux-$ARCH.zip
unzip protoc-$PB_VERSION-linux-$ARCH.zip -d /usr/local

View File

@@ -0,0 +1,21 @@
#!/bin/bash
set -e
install_node() {
echo "Installing node..."
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
source "$HOME"/.bashrc
nvm install --no-progress 16
}
install_rust() {
echo "Installing rust..."
curl https://sh.rustup.rs -sSf | bash -s -- -y
export PATH="$PATH:/root/.cargo/bin"
}
install_node
install_rust

View File

@@ -1,35 +0,0 @@
"""
Takes a list of semver strings and sorts them in ascending order.
"""
import sys
from packaging.version import parse, InvalidVersion
if __name__ == "__main__":
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("prefix", default="v")
args = parser.parse_args()
# Read the input from stdin
lines = sys.stdin.readlines()
# Parse the versions
versions = []
for line in lines:
line = line.strip()
try:
version_str = line.removeprefix(args.prefix)
version = parse(version_str)
except InvalidVersion:
# There are old tags that don't follow the semver format
print(f"Invalid version: {line}", file=sys.stderr)
continue
versions.append((line, version))
# Sort the versions
versions.sort(key=lambda x: x[1])
# Print the sorted versions as original strings
for line, _ in versions:
print(line)

View File

@@ -57,8 +57,6 @@ plugins:
- https://arrow.apache.org/docs/objects.inv
- https://pandas.pydata.org/docs/objects.inv
- mkdocs-jupyter
- render_swagger:
allow_arbitrary_locations: true
markdown_extensions:
- admonition
@@ -89,10 +87,9 @@ nav:
- Data management: concepts/data_management.md
- 🔨 Guides:
- Working with tables: guides/tables.md
- Building a vector index: ann_indexes.md
- Building an ANN index: ann_indexes.md
- Vector Search: search.md
- Full-text search: fts.md
- Building a scalar index: guides/scalar_index.md
- Hybrid search:
- Overview: hybrid_search/hybrid_search.md
- Comparing Rerankers: hybrid_search/eval.md
@@ -101,21 +98,14 @@ nav:
- Quickstart: reranking/index.md
- Cohere Reranker: reranking/cohere.md
- Linear Combination Reranker: reranking/linear_combination.md
- Reciprocal Rank Fusion Reranker: reranking/rrf.md
- Cross Encoder Reranker: reranking/cross_encoder.md
- ColBERT Reranker: reranking/colbert.md
- Jina Reranker: reranking/jina.md
- OpenAI Reranker: reranking/openai.md
- Building Custom Rerankers: reranking/custom_reranker.md
- Example: notebooks/lancedb_reranking.ipynb
- Filtering: sql.md
- Versioning & Reproducibility: notebooks/reproducibility.ipynb
- Configuring Storage: guides/storage.md
- Migration Guide: migration.md
- Tuning retrieval performance:
- Choosing right query type: guides/tuning_retrievers/1_query_types.md
- Reranking: guides/tuning_retrievers/2_reranking.md
- Embedding fine-tuning: guides/tuning_retrievers/3_embed_tuning.md
- Sync -> Async Migration Guide: migration.md
- 🧬 Managing embeddings:
- Overview: embeddings/index.md
- Embedding functions: embeddings/embedding_functions.md
@@ -129,33 +119,22 @@ nav:
- Polars: python/polars_arrow.md
- DuckDB: python/duckdb.md
- LangChain:
- LangChain 🔗: integrations/langchain.md
- LangChain demo: notebooks/langchain_demo.ipynb
- LangChain JS/TS 🔗: https://js.langchain.com/docs/integrations/vectorstores/lancedb
- LlamaIndex 🦙:
- LlamaIndex docs: integrations/llamaIndex.md
- LlamaIndex demo: notebooks/llamaIndex_demo.ipynb
- LangChain 🔗: integrations/langchain.md
- LangChain JS/TS 🔗: https://js.langchain.com/docs/integrations/vectorstores/lancedb
- LlamaIndex 🦙: https://docs.llamaindex.ai/en/stable/examples/vector_stores/LanceDBIndexDemo/
- Pydantic: python/pydantic.md
- Voxel51: integrations/voxel51.md
- PromptTools: integrations/prompttools.md
- dlt: integrations/dlt.md
- 🎯 Examples:
- Overview: examples/index.md
- 🐍 Python:
- Overview: examples/examples_python.md
- Build From Scratch: examples/python_examples/build_from_scratch.md
- Multimodal: examples/python_examples/multimodal.md
- Rag: examples/python_examples/rag.md
- Vector Search: examples/python_examples/vector_search.md
- Chatbot: examples/python_examples/chatbot.md
- Evaluation: examples/python_examples/evaluations.md
- AI Agent: examples/python_examples/aiagent.md
- Miscellaneous:
- YouTube Transcript Search: notebooks/youtube_transcript_search.ipynb
- Documentation QA Bot using LangChain: notebooks/code_qa_bot.ipynb
- Multimodal search using CLIP: notebooks/multimodal_search.ipynb
- Serverless QA Bot with S3 and Lambda: examples/serverless_lancedb_with_s3_and_lambda.md
- Serverless QA Bot with Modal: examples/serverless_qa_bot_with_modal_and_langchain.md
- YouTube Transcript Search: notebooks/youtube_transcript_search.ipynb
- Documentation QA Bot using LangChain: notebooks/code_qa_bot.ipynb
- Multimodal search using CLIP: notebooks/multimodal_search.ipynb
- Example - Calculate CLIP Embeddings with Roboflow Inference: examples/image_embeddings_roboflow.md
- Serverless QA Bot with S3 and Lambda: examples/serverless_lancedb_with_s3_and_lambda.md
- Serverless QA Bot with Modal: examples/serverless_qa_bot_with_modal_and_langchain.md
- 👾 JavaScript:
- Overview: examples/examples_js.md
- Serverless Website Chatbot: examples/serverless_website_chatbot.md
@@ -167,14 +146,13 @@ nav:
- ⚙️ API reference:
- 🐍 Python: python/python.md
- 👾 JavaScript (vectordb): javascript/modules.md
- 👾 JavaScript (lancedb): js/globals.md
- 👾 JavaScript (lancedb): javascript/modules.md
- 🦀 Rust: https://docs.rs/lancedb/latest/lancedb/
- ☁️ LanceDB Cloud:
- Overview: cloud/index.md
- API reference:
- 🐍 Python: python/saas-python.md
- 👾 JavaScript: javascript/modules.md
- REST API: cloud/rest.md
- 👾 JavaScript: javascript/saas-modules.md
- Quick start: basic.md
- Concepts:
@@ -187,7 +165,6 @@ nav:
- Building an ANN index: ann_indexes.md
- Vector Search: search.md
- Full-text search: fts.md
- Building a scalar index: guides/scalar_index.md
- Hybrid search:
- Overview: hybrid_search/hybrid_search.md
- Comparing Rerankers: hybrid_search/eval.md
@@ -196,21 +173,14 @@ nav:
- Quickstart: reranking/index.md
- Cohere Reranker: reranking/cohere.md
- Linear Combination Reranker: reranking/linear_combination.md
- Reciprocal Rank Fusion Reranker: reranking/rrf.md
- Cross Encoder Reranker: reranking/cross_encoder.md
- ColBERT Reranker: reranking/colbert.md
- Jina Reranker: reranking/jina.md
- OpenAI Reranker: reranking/openai.md
- Building Custom Rerankers: reranking/custom_reranker.md
- Example: notebooks/lancedb_reranking.ipynb
- Filtering: sql.md
- Versioning & Reproducibility: notebooks/reproducibility.ipynb
- Configuring Storage: guides/storage.md
- Migration Guide: migration.md
- Tuning retrieval performance:
- Choosing right query type: guides/tuning_retrievers/1_query_types.md
- Reranking: guides/tuning_retrievers/2_reranking.md
- Embedding fine-tuning: guides/tuning_retrievers/3_embed_tuning.md
- Sync -> Async Migration Guide: migration.md
- Managing Embeddings:
- Overview: embeddings/index.md
- Embedding functions: embeddings/embedding_functions.md
@@ -223,49 +193,33 @@ nav:
- Pandas and PyArrow: python/pandas_and_pyarrow.md
- Polars: python/polars_arrow.md
- DuckDB: python/duckdb.md
- LangChain 🦜️🔗↗: integrations/langchain.md
- LangChain 🦜️🔗↗: https://python.langchain.com/docs/integrations/vectorstores/lancedb
- LangChain.js 🦜️🔗↗: https://js.langchain.com/docs/integrations/vectorstores/lancedb
- LlamaIndex 🦙↗: integrations/llamaIndex.md
- LlamaIndex 🦙↗: https://gpt-index.readthedocs.io/en/latest/examples/vector_stores/LanceDBIndexDemo.html
- Pydantic: python/pydantic.md
- Voxel51: integrations/voxel51.md
- PromptTools: integrations/prompttools.md
- dlt: integrations/dlt.md
- Examples:
- examples/index.md
- 🐍 Python:
- Overview: examples/examples_python.md
- Build From Scratch: examples/python_examples/build_from_scratch.md
- Multimodal: examples/python_examples/multimodal.md
- Rag: examples/python_examples/rag.md
- Vector Search: examples/python_examples/vector_search.md
- Chatbot: examples/python_examples/chatbot.md
- Evaluation: examples/python_examples/evaluations.md
- AI Agent: examples/python_examples/aiagent.md
- Miscellaneous:
- YouTube Transcript Search: notebooks/youtube_transcript_search.ipynb
- Documentation QA Bot using LangChain: notebooks/code_qa_bot.ipynb
- Multimodal search using CLIP: notebooks/multimodal_search.ipynb
- Serverless QA Bot with S3 and Lambda: examples/serverless_lancedb_with_s3_and_lambda.md
- Serverless QA Bot with Modal: examples/serverless_qa_bot_with_modal_and_langchain.md
- 👾 JavaScript:
- Overview: examples/examples_js.md
- Serverless Website Chatbot: examples/serverless_website_chatbot.md
- YouTube Transcript Search: examples/youtube_transcript_bot_with_nodejs.md
- TransformersJS Embedding Search: examples/transformerjs_embedding_search_nodejs.md
- 🦀 Rust:
- Overview: examples/examples_rust.md
- YouTube Transcript Search: notebooks/youtube_transcript_search.ipynb
- Documentation QA Bot using LangChain: notebooks/code_qa_bot.ipynb
- Multimodal search using CLIP: notebooks/multimodal_search.ipynb
- Serverless QA Bot with S3 and Lambda: examples/serverless_lancedb_with_s3_and_lambda.md
- Serverless QA Bot with Modal: examples/serverless_qa_bot_with_modal_and_langchain.md
- YouTube Transcript Search (JS): examples/youtube_transcript_bot_with_nodejs.md
- Serverless Chatbot from any website: examples/serverless_website_chatbot.md
- TransformersJS Embedding Search: examples/transformerjs_embedding_search_nodejs.md
- API reference:
- Overview: api_reference.md
- Python: python/python.md
- Javascript (vectordb): javascript/modules.md
- Javascript (lancedb): js/globals.md
- Javascript (lancedb): js/modules.md
- Rust: https://docs.rs/lancedb/latest/lancedb/index.html
- LanceDB Cloud:
- Overview: cloud/index.md
- API reference:
- 🐍 Python: python/saas-python.md
- 👾 JavaScript: javascript/modules.md
- REST API: cloud/rest.md
- 👾 JavaScript: javascript/saas-modules.md
extra_css:
- styles/global.css

View File

@@ -1,487 +0,0 @@
openapi: 3.1.0
info:
version: 1.0.0
title: LanceDB Cloud API
description: |
LanceDB Cloud API is a RESTful API that allows users to access and modify data stored in LanceDB Cloud.
Table actions are considered temporary resource creations and all use POST method.
contact:
name: LanceDB support
url: https://lancedb.com
email: contact@lancedb.com
servers:
- url: https://{db}.{region}.api.lancedb.com
description: LanceDB Cloud REST endpoint.
variables:
db:
default: ""
description: the name of DB
region:
default: "us-east-1"
description: the service region of the DB
security:
- key_auth: []
components:
securitySchemes:
key_auth:
name: x-api-key
type: apiKey
in: header
parameters:
table_name:
name: name
in: path
description: name of the table
required: true
schema:
type: string
responses:
invalid_request:
description: Invalid request
content:
text/plain:
schema:
type: string
not_found:
description: Not found
content:
text/plain:
schema:
type: string
unauthorized:
description: Unauthorized
content:
text/plain:
schema:
type: string
requestBodies:
arrow_stream_buffer:
description: Arrow IPC stream buffer
required: true
content:
application/vnd.apache.arrow.stream:
schema:
type: string
format: binary
paths:
/v1/table/:
get:
description: List tables, optionally, with pagination.
tags:
- Tables
summary: List Tables
operationId: listTables
parameters:
- name: limit
in: query
description: Limits the number of items to return.
schema:
type: integer
- name: page_token
in: query
description: Specifies the starting position of the next query
schema:
type: string
responses:
"200":
description: Successfully returned a list of tables in the DB
content:
application/json:
schema:
type: object
properties:
tables:
type: array
items:
type: string
page_token:
type: string
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/create/:
post:
description: Create a new table
summary: Create a new table
operationId: createTable
tags:
- Tables
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
$ref: "#/components/requestBodies/arrow_stream_buffer"
responses:
"200":
description: Table successfully created
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/query/:
post:
description: Vector Query
url: https://{db-uri}.{aws-region}.api.lancedb.com/v1/table/{name}/query/
tags:
- Data
summary: Vector Query
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
vector:
type: FixedSizeList
description: |
The targetted vector to search for. Required.
vector_column:
type: string
description: |
The column to query, it can be inferred from the schema if there is only one vector column.
prefilter:
type: boolean
description: |
Whether to prefilter the data. Optional.
k:
type: integer
description: |
The number of search results to return. Default is 10.
distance_type:
type: string
description: |
The distance metric to use for search. L2, Cosine, Dot and Hamming are supported. Default is L2.
bypass_vector_index:
type: boolean
description: |
Whether to bypass vector index. Optional.
filter:
type: string
description: |
A filter expression that specifies the rows to query. Optional.
columns:
type: array
items:
type: string
description: |
The columns to return. Optional.
nprobe:
type: integer
description: |
The number of probes to use for search. Optional.
refine_factor:
type: integer
description: |
The refine factor to use for search. Optional.
default: null
fast_search:
type: boolean
description: |
Whether to use fast search. Optional.
default: false
required:
- vector
responses:
"200":
description: top k results if query is successfully executed
content:
application/json:
schema:
type: object
properties:
results:
type: array
items:
type: object
properties:
id:
type: integer
selected_col_1_to_return:
type: col_1_type
selected_col_n_to_return:
type: col_n_type
_distance:
type: float
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/insert/:
post:
description: Insert new data to the Table.
tags:
- Data
operationId: insertData
summary: Insert new data.
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
$ref: "#/components/requestBodies/arrow_stream_buffer"
responses:
"200":
description: Insert successful
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/merge_insert/:
post:
description: Create a "merge insert" operation
This operation can add rows, update rows, and remove rows all in a single
transaction. See python method `lancedb.table.Table.merge_insert` for examples.
tags:
- Data
summary: Merge Insert
operationId: mergeInsert
parameters:
- $ref: "#/components/parameters/table_name"
- name: on
in: query
description: |
The column to use as the primary key for the merge operation.
required: true
schema:
type: string
- name: when_matched_update_all
in: query
description: |
Rows that exist in both the source table (new data) and
the target table (old data) will be updated, replacing
the old row with the corresponding matching row.
required: false
schema:
type: boolean
- name: when_matched_update_all_filt
in: query
description: |
If present then only rows that satisfy the filter expression will
be updated
required: false
schema:
type: string
- name: when_not_matched_insert_all
in: query
description: |
Rows that exist only in the source table (new data) will be
inserted into the target table (old data).
required: false
schema:
type: boolean
- name: when_not_matched_by_source_delete
in: query
description: |
Rows that exist only in the target table (old data) will be
deleted. An optional condition (`when_not_matched_by_source_delete_filt`)
can be provided to limit what data is deleted.
required: false
schema:
type: boolean
- name: when_not_matched_by_source_delete_filt
in: query
description: |
The filter expression that specifies the rows to delete.
required: false
schema:
type: string
requestBody:
$ref: "#/components/requestBodies/arrow_stream_buffer"
responses:
"200":
description: Merge Insert successful
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/delete/:
post:
description: Delete rows from a table.
tags:
- Data
summary: Delete rows from a table
operationId: deleteData
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
predicate:
type: string
description: |
A filter expression that specifies the rows to delete.
responses:
"200":
description: Delete successful
"401":
$ref: "#/components/responses/unauthorized"
/v1/table/{name}/drop/:
post:
description: Drop a table
tags:
- Tables
summary: Drop a table
operationId: dropTable
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
$ref: "#/components/requestBodies/arrow_stream_buffer"
responses:
"200":
description: Drop successful
"401":
$ref: "#/components/responses/unauthorized"
/v1/table/{name}/describe/:
post:
description: Describe a table and return Table Information.
tags:
- Tables
summary: Describe a table
operationId: describeTable
parameters:
- $ref: "#/components/parameters/table_name"
responses:
"200":
description: Table information
content:
application/json:
schema:
type: object
properties:
table:
type: string
version:
type: integer
schema:
type: string
stats:
type: object
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/index/list/:
post:
description: List indexes of a table
tags:
- Tables
summary: List indexes of a table
operationId: listIndexes
parameters:
- $ref: "#/components/parameters/table_name"
responses:
"200":
description: Available list of indexes on the table.
content:
application/json:
schema:
type: object
properties:
indexes:
type: array
items:
type: object
properties:
columns:
type: array
items:
type: string
index_name:
type: string
index_uuid:
type: string
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/create_index/:
post:
description: Create vector index on a Table
tags:
- Tables
summary: Create vector index on a Table
operationId: createIndex
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
column:
type: string
metric_type:
type: string
nullable: false
description: |
The metric type to use for the index. L2, Cosine, Dot are supported.
index_type:
type: string
responses:
"200":
description: Index successfully created
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"
/v1/table/{name}/create_scalar_index/:
post:
description: Create a scalar index on a table
tags:
- Tables
summary: Create a scalar index on a table
operationId: createScalarIndex
parameters:
- $ref: "#/components/parameters/table_name"
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
column:
type: string
index_type:
type: string
required: false
responses:
"200":
description: Scalar Index successfully created
"400":
$ref: "#/components/responses/invalid_request"
"401":
$ref: "#/components/responses/unauthorized"
"404":
$ref: "#/components/responses/not_found"

View File

@@ -1,7 +1,5 @@
mkdocs==1.5.3
mkdocs-jupyter==0.24.1
mkdocs-material==9.5.3
mkdocstrings[python]==0.25.2
griffe
mkdocs-render-swagger-plugin
pydantic
mkdocstrings[python]==0.20.0
pydantic

View File

@@ -38,27 +38,13 @@ Lance supports `IVF_PQ` index type by default.
tbl.create_index(num_partitions=256, num_sub_vectors=96)
```
=== "TypeScript"
=== "Typescript"
=== "@lancedb/lancedb"
```typescript
--8<--- "docs/src/ann_indexes.ts:import"
Creating indexes is done via the [lancedb.Table.createIndex](../js/classes/Table.md/#createIndex) method.
```typescript
--8<--- "nodejs/examples/ann_indexes.ts:import"
--8<-- "nodejs/examples/ann_indexes.ts:ingest"
```
=== "vectordb (deprecated)"
Creating indexes is done via the [lancedb.Table.createIndex](../javascript/interfaces/Table.md/#createIndex) method.
```typescript
--8<--- "docs/src/ann_indexes.ts:import"
--8<-- "docs/src/ann_indexes.ts:ingest"
```
--8<-- "docs/src/ann_indexes.ts:ingest"
```
=== "Rust"
@@ -105,27 +91,27 @@ You can specify the GPU device to train IVF partitions via
=== "Linux"
<!-- skip-test -->
``` { .python .copy }
# Create index using CUDA on Nvidia GPUs.
tbl.create_index(
num_partitions=256,
num_sub_vectors=96,
accelerator="cuda"
)
```
<!-- skip-test -->
``` { .python .copy }
# Create index using CUDA on Nvidia GPUs.
tbl.create_index(
num_partitions=256,
num_sub_vectors=96,
accelerator="cuda"
)
```
=== "MacOS"
<!-- skip-test -->
```python
# Create index using MPS on Apple Silicon.
tbl.create_index(
num_partitions=256,
num_sub_vectors=96,
accelerator="mps"
)
```
<!-- skip-test -->
```python
# Create index using MPS on Apple Silicon.
tbl.create_index(
num_partitions=256,
num_sub_vectors=96,
accelerator="mps"
)
```
Troubleshooting:
@@ -164,19 +150,11 @@ There are a couple of parameters that can be used to fine-tune the search:
1 [0.48587373, 0.269207, 0.15095535, 0.65531915,... item 3953 108.393867
```
=== "TypeScript"
=== "Typescript"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/ann_indexes.ts:search1"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/ann_indexes.ts:search1"
```
```typescript
--8<-- "docs/src/ann_indexes.ts:search1"
```
=== "Rust"
@@ -194,23 +172,15 @@ You can further filter the elements returned by a search using a where clause.
=== "Python"
```python
tbl.search(np.random.random((1536))).where("item != 'item 1141'").to_pandas()
```
```python
tbl.search(np.random.random((1536))).where("item != 'item 1141'").to_pandas()
```
=== "TypeScript"
=== "Typescript"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/ann_indexes.ts:search2"
```
=== "vectordb (deprecated)"
```javascript
--8<-- "docs/src/ann_indexes.ts:search2"
```
```javascript
--8<-- "docs/src/ann_indexes.ts:search2"
```
### Projections (select clause)
@@ -218,31 +188,23 @@ You can select the columns returned by the query using a select clause.
=== "Python"
```python
tbl.search(np.random.random((1536))).select(["vector"]).to_pandas()
```
```python
tbl.search(np.random.random((1536))).select(["vector"]).to_pandas()
```
```text
vector _distance
0 [0.30928212, 0.022668175, 0.1756372, 0.4911822... 93.971092
1 [0.2525465, 0.01723831, 0.261568, 0.002007689,... 95.173485
...
```
```text
vector _distance
0 [0.30928212, 0.022668175, 0.1756372, 0.4911822... 93.971092
1 [0.2525465, 0.01723831, 0.261568, 0.002007689,... 95.173485
...
```
=== "TypeScript"
=== "Typescript"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/ann_indexes.ts:search3"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/ann_indexes.ts:search3"
```
```typescript
--8<-- "docs/src/ann_indexes.ts:search3"
```
## FAQ

View File

@@ -4,5 +4,5 @@ The API reference for the LanceDB client SDKs are available at the following loc
- [Python](python/python.md)
- [JavaScript (legacy vectordb package)](javascript/modules.md)
- [JavaScript (newer @lancedb/lancedb package)](js/globals.md)
- [JavaScript (newer @lancedb/lancedb package)](js/modules.md)
- [Rust](https://docs.rs/lancedb/latest/lancedb/index.html)

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pip install lancedb
```
=== "Typescript[^1]"
=== "@lancedb/lancedb"
=== "Typescript"
```shell
npm install @lancedb/lancedb
```
!!! note "Bundling `@lancedb/lancedb` apps with Webpack"
Since LanceDB contains a prebuilt Node binary, you must configure `next.config.js` to exclude it from webpack. This is required for both using Next.js and deploying a LanceDB app on Vercel.
```javascript
/** @type {import('next').NextConfig} */
module.exports = ({
webpack(config) {
config.externals.push({ '@lancedb/lancedb': '@lancedb/lancedb' })
return config;
}
})
```
!!! note "Yarn users"
Unlike other package managers, Yarn does not automatically resolve peer dependencies. If you are using Yarn, you will need to manually install 'apache-arrow':
```shell
yarn add apache-arrow
```
=== "vectordb (deprecated)"
```shell
npm install vectordb
```
!!! note "Bundling `vectordb` apps with Webpack"
Since LanceDB contains a prebuilt Node binary, you must configure `next.config.js` to exclude it from webpack. This is required for both using Next.js and deploying a LanceDB app on Vercel.
```javascript
/** @type {import('next').NextConfig} */
module.exports = ({
webpack(config) {
config.externals.push({ vectordb: 'vectordb' })
return config;
}
})
```
!!! note "Yarn users"
Unlike other package managers, Yarn does not automatically resolve peer dependencies. If you are using Yarn, you will need to manually install 'apache-arrow':
```shell
yarn add apache-arrow
```
```shell
npm install vectordb
```
=== "Rust"
@@ -93,43 +44,6 @@
!!! info "Please also make sure you're using the same version of Arrow as in the [lancedb crate](https://github.com/lancedb/lancedb/blob/main/Cargo.toml)"
### Preview releases
Stable releases are created about every 2 weeks. For the latest features and bug
fixes, you can install the preview release. These releases receive the same
level of testing as stable releases, but are not guaranteed to be available for
more than 6 months after they are released. Once your application is stable, we
recommend switching to stable releases.
=== "Python"
```shell
pip install --pre --extra-index-url https://pypi.fury.io/lancedb/ lancedb
```
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```shell
npm install @lancedb/lancedb@preview
```
=== "vectordb (deprecated)"
```shell
npm install vectordb@preview
```
=== "Rust"
We don't push preview releases to crates.io, but you can referent the tag
in GitHub within your Cargo dependencies:
```toml
[dependencies]
lancedb = { git = "https://github.com/lancedb/lancedb.git", tag = "vX.Y.Z-beta.N" }
```
## Connect to a database
=== "Python"
@@ -149,22 +63,23 @@ recommend switching to stable releases.
use the same syntax as the asynchronous API. To help with this migration we
have created a [migration guide](migration.md) detailing the differences.
=== "Typescript[^1]"
=== "Typescript"
=== "@lancedb/lancedb"
```typescript
--8<-- "docs/src/basic_legacy.ts:import"
```typescript
import * as lancedb from "@lancedb/lancedb";
import * as arrow from "apache-arrow";
--8<-- "docs/src/basic_legacy.ts:open_db"
```
--8<-- "nodejs/examples/basic.ts:connect"
```
!!! note "`@lancedb/lancedb` vs. `vectordb`"
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:open_db"
```
The Javascript SDK was originally released as `vectordb`. In an effort to
reduce maintenance we are aligning our SDKs. The new, aligned, Javascript
API is being released as `lancedb`. If you are starting new work we encourage
you to try out `lancedb`. Once the new API is feature complete we will begin
slowly deprecating `vectordb` in favor of `lancedb`. There is a
[migration guide](migration.md) detailing the differences which will assist
you in this process.
=== "Rust"
@@ -207,23 +122,15 @@ table.
--8<-- "python/python/tests/docs/test_basic.py:create_table_async_pandas"
```
=== "Typescript[^1]"
=== "Typescript"
=== "@lancedb/lancedb"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_table"
```
```typescript
--8<-- "nodejs/examples/basic.ts:create_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_table"
```
If the table already exists, LanceDB will raise an error by default.
If you want to overwrite the table, you can pass in `mode:"overwrite"`
to the `createTable` function.
If the table already exists, LanceDB will raise an error by default.
If you want to overwrite the table, you can pass in `mode="overwrite"`
to the `createTable` function.
=== "Rust"
@@ -243,9 +150,6 @@ table.
!!! info "Under the hood, LanceDB reads in the Apache Arrow data and persists it to disk using the [Lance format](https://www.github.com/lancedb/lance)."
!!! info "Automatic embedding generation with Embedding API"
When working with embedding models, it is recommended to use the LanceDB embedding API to automatically create vector representation of the data and queries in the background. See the [quickstart example](#using-the-embedding-api) or the embedding API [guide](./embeddings/)
### Create an empty table
Sometimes you may not have the data to insert into the table at creation time.
@@ -260,22 +164,11 @@ similar to a `CREATE TABLE` statement in SQL.
--8<-- "python/python/tests/docs/test_basic.py:create_empty_table_async"
```
!!! note "You can define schema in Pydantic"
LanceDB comes with Pydantic support, which allows you to define the schema of your data using Pydantic models. This makes it easy to work with LanceDB tables and data. Learn more about all supported types in [tables guide](./guides/tables.md).
=== "Typescript"
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:create_empty_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_empty_table"
```
```typescript
--8<-- "docs/src/basic_legacy.ts:create_empty_table"
```
=== "Rust"
@@ -294,19 +187,11 @@ Once created, you can open a table as follows:
--8<-- "python/python/tests/docs/test_basic.py:open_table_async"
```
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:open_table"
```
=== "vectordb (deprecated)"
```typescript
const tbl = await db.openTable("myTable");
```
=== "Typescript"
```typescript
const tbl = await db.openTable("myTable");
```
=== "Rust"
@@ -323,18 +208,11 @@ If you forget the name of your table, you can always get a listing of all table
--8<-- "python/python/tests/docs/test_basic.py:table_names_async"
```
=== "Typescript[^1]"
=== "@lancedb/lancedb"
=== "Javascript"
```typescript
--8<-- "nodejs/examples/basic.ts:table_names"
```
=== "vectordb (deprecated)"
```typescript
console.log(await db.tableNames());
```
```javascript
console.log(await db.tableNames());
```
=== "Rust"
@@ -353,18 +231,11 @@ After a table has been created, you can always add more data to it as follows:
--8<-- "python/python/tests/docs/test_basic.py:add_data_async"
```
=== "Typescript[^1]"
=== "@lancedb/lancedb"
=== "Typescript"
```typescript
--8<-- "nodejs/examples/basic.ts:add_data"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:add"
```
```typescript
--8<-- "docs/src/basic_legacy.ts:add"
```
=== "Rust"
@@ -385,18 +256,11 @@ Once you've embedded the query, you can find its nearest neighbors as follows:
This returns a pandas DataFrame with the results.
=== "Typescript[^1]"
=== "@lancedb/lancedb"
=== "Typescript"
```typescript
--8<-- "nodejs/examples/basic.ts:vector_search"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:search"
```
```typescript
--8<-- "docs/src/basic_legacy.ts:search"
```
=== "Rust"
@@ -425,18 +289,11 @@ LanceDB allows you to create an ANN index on a table as follows:
--8<-- "python/python/tests/docs/test_basic.py:create_index_async"
```
=== "Typescript[^1]"
=== "@lancedb/lancedb"
=== "Typescript"
```typescript
--8<-- "nodejs/examples/basic.ts:create_index"
```
=== "vectordb (deprecated)"
```{.typescript .ignore}
--8<-- "docs/src/basic_legacy.ts:create_index"
```
```{.typescript .ignore}
--8<-- "docs/src/basic_legacy.ts:create_index"
```
=== "Rust"
@@ -464,19 +321,11 @@ This can delete any number of rows that match the filter.
--8<-- "python/python/tests/docs/test_basic.py:delete_rows_async"
```
=== "Typescript[^1]"
=== "Typescript"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:delete_rows"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:delete"
```
```typescript
--8<-- "docs/src/basic_legacy.ts:delete"
```
=== "Rust"
@@ -493,15 +342,9 @@ simple or complex as needed. To see what expressions are supported, see the
Read more: [lancedb.table.Table.delete][]
=== "Typescript[^1]"
=== "Javascript"
=== "@lancedb/lancedb"
Read more: [lancedb.Table.delete](javascript/interfaces/Table.md#delete)
=== "vectordb (deprecated)"
Read more: [vectordb.Table.delete](javascript/interfaces/Table.md#delete)
Read more: [vectordb.Table.delete](javascript/interfaces/Table.md#delete)
=== "Rust"
@@ -513,31 +356,23 @@ Use the `drop_table()` method on the database to remove a table.
=== "Python"
```python
--8<-- "python/python/tests/docs/test_basic.py:drop_table"
--8<-- "python/python/tests/docs/test_basic.py:drop_table_async"
```
```python
--8<-- "python/python/tests/docs/test_basic.py:drop_table"
--8<-- "python/python/tests/docs/test_basic.py:drop_table_async"
```
This permanently removes the table and is not recoverable, unlike deleting rows.
By default, if the table does not exist an exception is raised. To suppress this,
you can pass in `ignore_missing=True`.
This permanently removes the table and is not recoverable, unlike deleting rows.
By default, if the table does not exist an exception is raised. To suppress this,
you can pass in `ignore_missing=True`.
=== "Typescript[^1]"
=== "Typescript"
=== "@lancedb/lancedb"
```typescript
--8<-- "docs/src/basic_legacy.ts:drop_table"
```
```typescript
--8<-- "nodejs/examples/basic.ts:drop_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:drop_table"
```
This permanently removes the table and is not recoverable, unlike deleting rows.
If the table does not exist an exception is raised.
This permanently removes the table and is not recoverable, unlike deleting rows.
If the table does not exist an exception is raised.
=== "Rust"
@@ -545,40 +380,22 @@ Use the `drop_table()` method on the database to remove a table.
--8<-- "rust/lancedb/examples/simple.rs:drop_table"
```
!!! note "Bundling `vectordb` apps with Webpack"
## Using the Embedding API
You can use the embedding API when working with embedding models. It automatically vectorizes the data at ingestion and query time and comes with built-in integrations with popular embedding models like Openai, Hugging Face, Sentence Transformers, CLIP and more.
If you're using the `vectordb` module in JavaScript, since LanceDB contains a prebuilt Node binary, you must configure `next.config.js` to exclude it from webpack. This is required for both using Next.js and deploying a LanceDB app on Vercel.
=== "Python"
```python
--8<-- "python/python/tests/docs/test_embeddings_optional.py:imports"
--8<-- "python/python/tests/docs/test_embeddings_optional.py:openai_embeddings"
```javascript
/** @type {import('next').NextConfig} */
module.exports = ({
webpack(config) {
config.externals.push({ vectordb: 'vectordb' })
return config;
}
})
```
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/embedding.ts:imports"
--8<-- "nodejs/examples/embedding.ts:openai_embeddings"
```
=== "Rust"
```rust
--8<-- "rust/lancedb/examples/openai.rs:imports"
--8<-- "rust/lancedb/examples/openai.rs:openai_embeddings"
```
Learn about using the existing integrations and creating custom embedding functions in the [embedding API guide](./embeddings/).
## What's next
This section covered the very basics of using LanceDB. If you're learning about vector databases for the first time, you may want to read the page on [indexing](concepts/index_ivfpq.md) to get familiar with the concepts.
If you've already worked with other vector databases, you may want to read the [guides](guides/tables.md) to learn how to work with LanceDB in more detail.
[^1]: The `vectordb` package is a legacy package that is deprecated in favor of `@lancedb/lancedb`. The `vectordb` package will continue to receive bug fixes and security updates until September 2024. We recommend all new projects use `@lancedb/lancedb`. See the [migration guide](migration.md) for more information.

View File

@@ -1,14 +1,6 @@
// --8<-- [start:import]
import * as lancedb from "vectordb";
import {
Schema,
Field,
Float32,
FixedSizeList,
Int32,
Float16,
} from "apache-arrow";
import * as arrow from "apache-arrow";
import { Schema, Field, Float32, FixedSizeList, Int32, Float16 } from "apache-arrow";
// --8<-- [end:import]
import * as fs from "fs";
import { Table as ArrowTable, Utf8 } from "apache-arrow";
@@ -28,33 +20,9 @@ const example = async () => {
{ vector: [3.1, 4.1], item: "foo", price: 10.0 },
{ vector: [5.9, 26.5], item: "bar", price: 20.0 },
],
{ writeMode: lancedb.WriteMode.Overwrite },
{ writeMode: lancedb.WriteMode.Overwrite }
);
// --8<-- [end:create_table]
{
// --8<-- [start:create_table_with_schema]
const schema = new arrow.Schema([
new arrow.Field(
"vector",
new arrow.FixedSizeList(
2,
new arrow.Field("item", new arrow.Float32(), true),
),
),
new arrow.Field("item", new arrow.Utf8(), true),
new arrow.Field("price", new arrow.Float32(), true),
]);
const data = [
{ vector: [3.1, 4.1], item: "foo", price: 10.0 },
{ vector: [5.9, 26.5], item: "bar", price: 20.0 },
];
const tbl = await db.createTable({
name: "myTableWithSchema",
data,
schema,
});
// --8<-- [end:create_table_with_schema]
}
// --8<-- [start:add]
const newData = Array.from({ length: 500 }, (_, i) => ({
@@ -74,35 +42,33 @@ const example = async () => {
// --8<-- [end:create_index]
// --8<-- [start:create_empty_table]
const schema = new arrow.Schema([
new arrow.Field("id", new arrow.Int32()),
new arrow.Field("name", new arrow.Utf8()),
const schema = new Schema([
new Field("id", new Int32()),
new Field("name", new Utf8()),
]);
const empty_tbl = await db.createTable({ name: "empty_table", schema });
// --8<-- [end:create_empty_table]
{
// --8<-- [start:create_f16_table]
const dim = 16;
const total = 10;
const schema = new Schema([
new Field("id", new Int32()),
// --8<-- [start:create_f16_table]
const dim = 16
const total = 10
const f16_schema = new Schema([
new Field('id', new Int32()),
new Field(
"vector",
new FixedSizeList(dim, new Field("item", new Float16(), true)),
false,
),
]);
const data = lancedb.makeArrowTable(
'vector',
new FixedSizeList(dim, new Field('item', new Float16(), true)),
false
)
])
const data = lancedb.makeArrowTable(
Array.from(Array(total), (_, i) => ({
id: i,
vector: Array.from(Array(dim), Math.random),
vector: Array.from(Array(dim), Math.random)
})),
{ schema },
);
const table = await db.createTable("f16_tbl", data);
// --8<-- [end:create_f16_table]
}
{ f16_schema }
)
const table = await db.createTable('f16_tbl', data)
// --8<-- [end:create_f16_table]
// --8<-- [start:search]
const query = await tbl.search([100, 100]).limit(2).execute();

View File

@@ -1 +0,0 @@
!!swagger ../../openapi.yml!!

View File

@@ -15,226 +15,198 @@ There is another optional layer of abstraction available: `TextEmbeddingFunction
Let's implement `SentenceTransformerEmbeddings` class. All you need to do is implement the `generate_embeddings()` and `ndims` function to handle the input types you expect and register the class in the global `EmbeddingFunctionRegistry`
```python
from lancedb.embeddings import register
from lancedb.util import attempt_import_or_raise
=== "Python"
@register("sentence-transformers")
class SentenceTransformerEmbeddings(TextEmbeddingFunction):
name: str = "all-MiniLM-L6-v2"
# set more default instance vars like device, etc.
```python
from lancedb.embeddings import register
from lancedb.util import attempt_import_or_raise
def __init__(self, **kwargs):
super().__init__(**kwargs)
self._ndims = None
def generate_embeddings(self, texts):
return self._embedding_model().encode(list(texts), ...).tolist()
@register("sentence-transformers")
class SentenceTransformerEmbeddings(TextEmbeddingFunction):
name: str = "all-MiniLM-L6-v2"
# set more default instance vars like device, etc.
def ndims(self):
if self._ndims is None:
self._ndims = len(self.generate_embeddings("foo")[0])
return self._ndims
def __init__(self, **kwargs):
super().__init__(**kwargs)
self._ndims = None
@cached(cache={})
def _embedding_model(self):
return sentence_transformers.SentenceTransformer(name)
```
def generate_embeddings(self, texts):
return self._embedding_model().encode(list(texts), ...).tolist()
def ndims(self):
if self._ndims is None:
self._ndims = len(self.generate_embeddings("foo")[0])
return self._ndims
@cached(cache={})
def _embedding_model(self):
return sentence_transformers.SentenceTransformer(name)
```
=== "TypeScript"
```ts
--8<--- "nodejs/examples/custom_embedding_function.ts:imports"
--8<--- "nodejs/examples/custom_embedding_function.ts:embedding_impl"
```
This is a stripped down version of our implementation of `SentenceTransformerEmbeddings` that removes certain optimizations and default settings.
This is a stripped down version of our implementation of `SentenceTransformerEmbeddings` that removes certain optimizations and defaul settings.
Now you can use this embedding function to create your table schema and that's it! you can then ingest data and run queries without manually vectorizing the inputs.
=== "Python"
```python
from lancedb.pydantic import LanceModel, Vector
```python
from lancedb.pydantic import LanceModel, Vector
registry = EmbeddingFunctionRegistry.get_instance()
stransformer = registry.get("sentence-transformers").create()
registry = EmbeddingFunctionRegistry.get_instance()
stransformer = registry.get("sentence-transformers").create()
class TextModelSchema(LanceModel):
vector: Vector(stransformer.ndims) = stransformer.VectorField()
text: str = stransformer.SourceField()
class TextModelSchema(LanceModel):
vector: Vector(stransformer.ndims) = stransformer.VectorField()
text: str = stransformer.SourceField()
tbl = db.create_table("table", schema=TextModelSchema)
tbl = db.create_table("table", schema=TextModelSchema)
tbl.add(pd.DataFrame({"text": ["halo", "world"]}))
result = tbl.search("world").limit(5)
```
tbl.add(pd.DataFrame({"text": ["halo", "world"]}))
result = tbl.search("world").limit(5)
```
NOTE:
=== "TypeScript"
```ts
--8<--- "nodejs/examples/custom_embedding_function.ts:call_custom_function"
```
!!! note
You can always implement the `EmbeddingFunction` interface directly if you want or need to, `TextEmbeddingFunction` just makes it much simpler and faster for you to do so, by setting up the boiler plat for text-specific use case
You can always implement the `EmbeddingFunction` interface directly if you want or need to, `TextEmbeddingFunction` just makes it much simpler and faster for you to do so, by setting up the boiler plat for text-specific use case
## Multi-modal embedding function example
You can also use the `EmbeddingFunction` interface to implement more complex workflows such as multi-modal embedding function support.
You can also use the `EmbeddingFunction` interface to implement more complex workflows such as multi-modal embedding function support. LanceDB implements `OpenClipEmeddingFunction` class that suppports multi-modal seach. Here's the implementation that you can use as a reference to build your own multi-modal embedding functions.
=== "Python"
```python
@register("open-clip")
class OpenClipEmbeddings(EmbeddingFunction):
name: str = "ViT-B-32"
pretrained: str = "laion2b_s34b_b79k"
device: str = "cpu"
batch_size: int = 64
normalize: bool = True
_model = PrivateAttr()
_preprocess = PrivateAttr()
_tokenizer = PrivateAttr()
LanceDB implements `OpenClipEmeddingFunction` class that suppports multi-modal seach. Here's the implementation that you can use as a reference to build your own multi-modal embedding functions.
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
open_clip = attempt_import_or_raise("open_clip", "open-clip") # EmbeddingFunction util to import external libs and raise if not found
model, _, preprocess = open_clip.create_model_and_transforms(
self.name, pretrained=self.pretrained
)
model.to(self.device)
self._model, self._preprocess = model, preprocess
self._tokenizer = open_clip.get_tokenizer(self.name)
self._ndims = None
```python
@register("open-clip")
class OpenClipEmbeddings(EmbeddingFunction):
name: str = "ViT-B-32"
pretrained: str = "laion2b_s34b_b79k"
device: str = "cpu"
batch_size: int = 64
normalize: bool = True
_model = PrivateAttr()
_preprocess = PrivateAttr()
_tokenizer = PrivateAttr()
def ndims(self):
if self._ndims is None:
self._ndims = self.generate_text_embeddings("foo").shape[0]
return self._ndims
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
open_clip = attempt_import_or_raise("open_clip", "open-clip") # EmbeddingFunction util to import external libs and raise if not found
model, _, preprocess = open_clip.create_model_and_transforms(
self.name, pretrained=self.pretrained
)
model.to(self.device)
self._model, self._preprocess = model, preprocess
self._tokenizer = open_clip.get_tokenizer(self.name)
self._ndims = None
def compute_query_embeddings(
self, query: Union[str, "PIL.Image.Image"], *args, **kwargs
) -> List[np.ndarray]:
"""
Compute the embeddings for a given user query
def ndims(self):
if self._ndims is None:
self._ndims = self.generate_text_embeddings("foo").shape[0]
return self._ndims
def compute_query_embeddings(
self, query: Union[str, "PIL.Image.Image"], *args, **kwargs
) -> List[np.ndarray]:
"""
Compute the embeddings for a given user query
Parameters
----------
query : Union[str, PIL.Image.Image]
The query to embed. A query can be either text or an image.
"""
if isinstance(query, str):
return [self.generate_text_embeddings(query)]
else:
PIL = attempt_import_or_raise("PIL", "pillow")
if isinstance(query, PIL.Image.Image):
return [self.generate_image_embedding(query)]
else:
raise TypeError("OpenClip supports str or PIL Image as query")
def generate_text_embeddings(self, text: str) -> np.ndarray:
torch = attempt_import_or_raise("torch")
text = self.sanitize_input(text)
text = self._tokenizer(text)
text.to(self.device)
with torch.no_grad():
text_features = self._model.encode_text(text.to(self.device))
if self.normalize:
text_features /= text_features.norm(dim=-1, keepdim=True)
return text_features.cpu().numpy().squeeze()
def sanitize_input(self, images: IMAGES) -> Union[List[bytes], np.ndarray]:
"""
Sanitize the input to the embedding function.
"""
if isinstance(images, (str, bytes)):
images = [images]
elif isinstance(images, pa.Array):
images = images.to_pylist()
elif isinstance(images, pa.ChunkedArray):
images = images.combine_chunks().to_pylist()
return images
def compute_source_embeddings(
self, images: IMAGES, *args, **kwargs
) -> List[np.array]:
"""
Get the embeddings for the given images
"""
images = self.sanitize_input(images)
embeddings = []
for i in range(0, len(images), self.batch_size):
j = min(i + self.batch_size, len(images))
batch = images[i:j]
embeddings.extend(self._parallel_get(batch))
return embeddings
def _parallel_get(self, images: Union[List[str], List[bytes]]) -> List[np.ndarray]:
"""
Issue concurrent requests to retrieve the image data
"""
with concurrent.futures.ThreadPoolExecutor() as executor:
futures = [
executor.submit(self.generate_image_embedding, image)
for image in images
]
return [future.result() for future in futures]
def generate_image_embedding(
self, image: Union[str, bytes, "PIL.Image.Image"]
) -> np.ndarray:
"""
Generate the embedding for a single image
Parameters
----------
image : Union[str, bytes, PIL.Image.Image]
The image to embed. If the image is a str, it is treated as a uri.
If the image is bytes, it is treated as the raw image bytes.
"""
torch = attempt_import_or_raise("torch")
# TODO handle retry and errors for https
image = self._to_pil(image)
image = self._preprocess(image).unsqueeze(0)
with torch.no_grad():
return self._encode_and_normalize_image(image)
def _to_pil(self, image: Union[str, bytes]):
Parameters
----------
query : Union[str, PIL.Image.Image]
The query to embed. A query can be either text or an image.
"""
if isinstance(query, str):
return [self.generate_text_embeddings(query)]
else:
PIL = attempt_import_or_raise("PIL", "pillow")
if isinstance(image, bytes):
return PIL.Image.open(io.BytesIO(image))
if isinstance(image, PIL.Image.Image):
return image
elif isinstance(image, str):
parsed = urlparse.urlparse(image)
# TODO handle drive letter on windows.
if parsed.scheme == "file":
return PIL.Image.open(parsed.path)
elif parsed.scheme == "":
return PIL.Image.open(image if os.name == "nt" else parsed.path)
elif parsed.scheme.startswith("http"):
return PIL.Image.open(io.BytesIO(url_retrieve(image)))
else:
raise NotImplementedError("Only local and http(s) urls are supported")
if isinstance(query, PIL.Image.Image):
return [self.generate_image_embedding(query)]
else:
raise TypeError("OpenClip supports str or PIL Image as query")
def _encode_and_normalize_image(self, image_tensor: "torch.Tensor"):
"""
encode a single image tensor and optionally normalize the output
"""
image_features = self._model.encode_image(image_tensor)
def generate_text_embeddings(self, text: str) -> np.ndarray:
torch = attempt_import_or_raise("torch")
text = self.sanitize_input(text)
text = self._tokenizer(text)
text.to(self.device)
with torch.no_grad():
text_features = self._model.encode_text(text.to(self.device))
if self.normalize:
image_features /= image_features.norm(dim=-1, keepdim=True)
return image_features.cpu().numpy().squeeze()
```
text_features /= text_features.norm(dim=-1, keepdim=True)
return text_features.cpu().numpy().squeeze()
=== "TypeScript"
def sanitize_input(self, images: IMAGES) -> Union[List[bytes], np.ndarray]:
"""
Sanitize the input to the embedding function.
"""
if isinstance(images, (str, bytes)):
images = [images]
elif isinstance(images, pa.Array):
images = images.to_pylist()
elif isinstance(images, pa.ChunkedArray):
images = images.combine_chunks().to_pylist()
return images
Coming Soon! See this [issue](https://github.com/lancedb/lancedb/issues/1482) to track the status!
def compute_source_embeddings(
self, images: IMAGES, *args, **kwargs
) -> List[np.array]:
"""
Get the embeddings for the given images
"""
images = self.sanitize_input(images)
embeddings = []
for i in range(0, len(images), self.batch_size):
j = min(i + self.batch_size, len(images))
batch = images[i:j]
embeddings.extend(self._parallel_get(batch))
return embeddings
def _parallel_get(self, images: Union[List[str], List[bytes]]) -> List[np.ndarray]:
"""
Issue concurrent requests to retrieve the image data
"""
with concurrent.futures.ThreadPoolExecutor() as executor:
futures = [
executor.submit(self.generate_image_embedding, image)
for image in images
]
return [future.result() for future in futures]
def generate_image_embedding(
self, image: Union[str, bytes, "PIL.Image.Image"]
) -> np.ndarray:
"""
Generate the embedding for a single image
Parameters
----------
image : Union[str, bytes, PIL.Image.Image]
The image to embed. If the image is a str, it is treated as a uri.
If the image is bytes, it is treated as the raw image bytes.
"""
torch = attempt_import_or_raise("torch")
# TODO handle retry and errors for https
image = self._to_pil(image)
image = self._preprocess(image).unsqueeze(0)
with torch.no_grad():
return self._encode_and_normalize_image(image)
def _to_pil(self, image: Union[str, bytes]):
PIL = attempt_import_or_raise("PIL", "pillow")
if isinstance(image, bytes):
return PIL.Image.open(io.BytesIO(image))
if isinstance(image, PIL.Image.Image):
return image
elif isinstance(image, str):
parsed = urlparse.urlparse(image)
# TODO handle drive letter on windows.
if parsed.scheme == "file":
return PIL.Image.open(parsed.path)
elif parsed.scheme == "":
return PIL.Image.open(image if os.name == "nt" else parsed.path)
elif parsed.scheme.startswith("http"):
return PIL.Image.open(io.BytesIO(url_retrieve(image)))
else:
raise NotImplementedError("Only local and http(s) urls are supported")
def _encode_and_normalize_image(self, image_tensor: "torch.Tensor"):
"""
encode a single image tensor and optionally normalize the output
"""
image_features = self._model.encode_image(image_tensor)
if self.normalize:
image_features /= image_features.norm(dim=-1, keepdim=True)
return image_features.cpu().numpy().squeeze()
```

View File

@@ -17,7 +17,6 @@ Allows you to set parameters when registering a `sentence-transformers` object.
| `name` | `str` | `all-MiniLM-L6-v2` | The name of the model |
| `device` | `str` | `cpu` | The device to run the model on (can be `cpu` or `gpu`) |
| `normalize` | `bool` | `True` | Whether to normalize the input text before feeding it to the model |
| `trust_remote_code` | `bool` | `False` | Whether to trust and execute remote code from the model's Huggingface repository |
??? "Check out available sentence-transformer models here!"
@@ -194,13 +193,13 @@ from lancedb.pydantic import LanceModel, Vector
model = get_registry().get("huggingface").create(name='facebook/bart-base')
class Words(LanceModel):
class TextModel(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
df = pd.DataFrame({"text": ["hi hello sayonara", "goodbye world"]})
table = db.create_table("greets", schema=Words)
table.add(df)
table.add()
query = "old greeting"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
@@ -217,7 +216,7 @@ Generate embeddings via the [ollama](https://github.com/ollama/ollama-python) py
|------------------------|----------------------------|--------------------------|------------------------------------------------------------------------------------------------------------------------------------------------|
| `name` | `str` | `nomic-embed-text` | The name of the model. |
| `host` | `str` | `http://localhost:11434` | The Ollama host to connect to. |
| `options` | `ollama.Options` or `dict` | `None` | Additional model parameters listed in the documentation for the Modelfile such as `temperature`. |
| `options` | `ollama.Options` or `dict` | `None` | Additional model parameters listed in the documentation for the [Modelfile](./modelfile.md#valid-parameters-and-values) such as `temperature`. |
| `keep_alive` | `float` or `str` | `"5m"` | Controls how long the model will stay loaded into memory following the request. |
| `ollama_client_kwargs` | `dict` | `{}` | kwargs that can be past to the `ollama.Client`. |
@@ -366,108 +365,6 @@ tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
```
### Cohere Embeddings
Using cohere API requires cohere package, which can be installed using `pip install cohere`. Cohere embeddings are used to generate embeddings for text data. The embeddings can be used for various tasks like semantic search, clustering, and classification.
You also need to set the `COHERE_API_KEY` environment variable to use the Cohere API.
Supported models are:
```
* embed-english-v3.0
* embed-multilingual-v3.0
* embed-english-light-v3.0
* embed-multilingual-light-v3.0
* embed-english-v2.0
* embed-english-light-v2.0
* embed-multilingual-v2.0
```
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"embed-english-v2.0"` | The model ID of the cohere model to use. Supported base models for Text Embeddings: embed-english-v3.0, embed-multilingual-v3.0, embed-english-light-v3.0, embed-multilingual-light-v3.0, embed-english-v2.0, embed-english-light-v2.0, embed-multilingual-v2.0 |
| `source_input_type` | `str` | `"search_document"` | The type of input data to be used for the source column. |
| `query_input_type` | `str` | `"search_query"` | The type of input data to be used for the query. |
Cohere supports following input types:
| Input Type | Description |
|-------------------------|---------------------------------------|
| "`search_document`" | Used for embeddings stored in a vector|
| | database for search use-cases. |
| "`search_query`" | Used for embeddings of search queries |
| | run against a vector DB |
| "`semantic_similarity`" | Specifies the given text will be used |
| | for Semantic Textual Similarity (STS) |
| "`classification`" | Used for embeddings passed through a |
| | text classifier. |
| "`clustering`" | Used for the embeddings run through a |
| | clustering algorithm |
Usage Example:
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import EmbeddingFunctionRegistry
cohere = EmbeddingFunctionRegistry
.get_instance()
.get("cohere")
.create(name="embed-multilingual-v2.0")
class TextModel(LanceModel):
text: str = cohere.SourceField()
vector: Vector(cohere.ndims()) = cohere.VectorField()
data = [ { "text": "hello world" },
{ "text": "goodbye world" }]
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(data)
```
### Jina Embeddings
Jina embeddings are used to generate embeddings for text and image data.
You also need to set the `JINA_API_KEY` environment variable to use the Jina API.
You can find a list of supported models under [https://jina.ai/embeddings/](https://jina.ai/embeddings/)
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"jina-clip-v1"` | The model ID of the jina model to use |
Usage Example:
```python
import os
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import EmbeddingFunctionRegistry
os.environ['JINA_API_KEY'] = 'jina_*'
jina_embed = EmbeddingFunctionRegistry.get_instance().get("jina").create(name="jina-embeddings-v2-base-en")
class TextModel(LanceModel):
text: str = jina_embed.SourceField()
vector: Vector(jina_embed.ndims()) = jina_embed.VectorField()
data = [{"text": "hello world"},
{"text": "goodbye world"}]
db = lancedb.connect("~/.lancedb-2")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(data)
```
### AWS Bedrock Text Embedding Functions
AWS Bedrock supports multiple base models for generating text embeddings. You need to setup the AWS credentials to use this embedding function.
You can do so by using `awscli` and also add your session_token:
@@ -518,82 +415,6 @@ tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
```
# IBM watsonx.ai Embeddings
Generate text embeddings using IBM's watsonx.ai platform.
## Supported Models
You can find a list of supported models at [IBM watsonx.ai Documentation](https://dataplatform.cloud.ibm.com/docs/content/wsj/analyze-data/fm-models-embed.html?context=wx). The currently supported model names are:
- `ibm/slate-125m-english-rtrvr`
- `ibm/slate-30m-english-rtrvr`
- `sentence-transformers/all-minilm-l12-v2`
- `intfloat/multilingual-e5-large`
## Parameters
The following parameters can be passed to the `create` method:
| Parameter | Type | Default Value | Description |
|------------|----------|----------------------------------|-----------------------------------------------------------|
| name | str | "ibm/slate-125m-english-rtrvr" | The model ID of the watsonx.ai model to use |
| api_key | str | None | Optional IBM Cloud API key (or set `WATSONX_API_KEY`) |
| project_id | str | None | Optional watsonx project ID (or set `WATSONX_PROJECT_ID`) |
| url | str | None | Optional custom URL for the watsonx.ai instance |
| params | dict | None | Optional additional parameters for the embedding model |
## Usage Example
First, the watsonx.ai library is an optional dependency, so must be installed seperately:
```
pip install ibm-watsonx-ai
```
Optionally set environment variables (if not passing credentials to `create` directly):
```sh
export WATSONX_API_KEY="YOUR_WATSONX_API_KEY"
export WATSONX_PROJECT_ID="YOUR_WATSONX_PROJECT_ID"
```
```python
import os
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import EmbeddingFunctionRegistry
watsonx_embed = EmbeddingFunctionRegistry
.get_instance()
.get("watsonx")
.create(
name="ibm/slate-125m-english-rtrvr",
# Uncomment and set these if not using environment variables
# api_key="your_api_key_here",
# project_id="your_project_id_here",
# url="your_watsonx_url_here",
# params={...},
)
class TextModel(LanceModel):
text: str = watsonx_embed.SourceField()
vector: Vector(watsonx_embed.ndims()) = watsonx_embed.VectorField()
data = [
{"text": "hello world"},
{"text": "goodbye world"},
]
db = lancedb.connect("~/.lancedb")
tbl = db.create_table("watsonx_test", schema=TextModel, mode="overwrite")
tbl.add(data)
rs = tbl.search("hello").limit(1).to_pandas()
print(rs)
```
## Multi-modal embedding functions
Multi-modal embedding functions allow you to query your table using both images and text.
@@ -641,7 +462,7 @@ uris = [
# get each uri as bytes
image_bytes = [requests.get(uri).content for uri in uris]
table.add(
pd.DataFrame({"label": labels, "image_uri": uris, "image_bytes": image_bytes})
[{"label": labels, "image_uri": uris, "image_bytes": image_bytes}]
)
```
Now we can search using text from both the default vector column and the custom vector column
@@ -747,54 +568,3 @@ print(actual.text == "bird")
```
If you have any questions about the embeddings API, supported models, or see a relevant model missing, please raise an issue [on GitHub](https://github.com/lancedb/lancedb/issues).
### Jina Embeddings
Jina embeddings can also be used to embed both text and image data, only some of the models support image data and you can check the list
under [https://jina.ai/embeddings/](https://jina.ai/embeddings/)
Supported parameters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `"jina-clip-v1"` | The model ID of the jina model to use |
Usage Example:
```python
import os
import requests
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
import pandas as pd
os.environ['JINA_API_KEY'] = 'jina_*'
db = lancedb.connect("~/.lancedb")
func = get_registry().get("jina").create()
class Images(LanceModel):
label: str
image_uri: str = func.SourceField() # image uri as the source
image_bytes: bytes = func.SourceField() # image bytes as the source
vector: Vector(func.ndims()) = func.VectorField() # vector column
vec_from_bytes: Vector(func.ndims()) = func.VectorField() # Another vector column
table = db.create_table("images", schema=Images)
labels = ["cat", "cat", "dog", "dog", "horse", "horse"]
uris = [
"http://farm1.staticflickr.com/53/167798175_7c7845bbbd_z.jpg",
"http://farm1.staticflickr.com/134/332220238_da527d8140_z.jpg",
"http://farm9.staticflickr.com/8387/8602747737_2e5c2a45d4_z.jpg",
"http://farm5.staticflickr.com/4092/5017326486_1f46057f5f_z.jpg",
"http://farm9.staticflickr.com/8216/8434969557_d37882c42d_z.jpg",
"http://farm6.staticflickr.com/5142/5835678453_4f3a4edb45_z.jpg",
]
# get each uri as bytes
image_bytes = [requests.get(uri).content for uri in uris]
table.add(
pd.DataFrame({"label": labels, "image_uri": uris, "image_bytes": image_bytes})
)
```

View File

@@ -2,12 +2,9 @@ Representing multi-modal data as vector embeddings is becoming a standard practi
For this purpose, LanceDB introduces an **embedding functions API**, that allow you simply set up once, during the configuration stage of your project. After this, the table remembers it, effectively making the embedding functions *disappear in the background* so you don't have to worry about manually passing callables, and instead, simply focus on the rest of your data engineering pipeline.
!!! Note "Embedding functions on LanceDB cloud"
When using embedding functions with LanceDB cloud, the embeddings will be generated on the source device and sent to the cloud. This means that the source device must have the necessary resources to generate the embeddings.
!!! warning
Using the embedding function registry means that you don't have to explicitly generate the embeddings yourself.
However, if your embedding function changes, you'll have to re-configure your table with the new embedding function
Using the embedding function registry means that you don't have to explicitly generate the embeddings yourself.
However, if your embedding function changes, you'll have to re-configure your table with the new embedding function
and regenerate the embeddings. In the future, we plan to support the ability to change the embedding function via
table metadata and have LanceDB automatically take care of regenerating the embeddings.
@@ -16,7 +13,7 @@ For this purpose, LanceDB introduces an **embedding functions API**, that allow
=== "Python"
In the LanceDB python SDK, we define a global embedding function registry with
many different embedding models and even more coming soon.
many different embedding models and even more coming soon.
Here's let's an implementation of CLIP as example.
```python
@@ -26,35 +23,20 @@ For this purpose, LanceDB introduces an **embedding functions API**, that allow
clip = registry.get("open-clip").create()
```
You can also define your own embedding function by implementing the `EmbeddingFunction`
You can also define your own embedding function by implementing the `EmbeddingFunction`
abstract base interface. It subclasses Pydantic Model which can be utilized to write complex schemas simply as we'll see next!
=== "TypeScript"
=== "JavaScript""
In the TypeScript SDK, the choices are more limited. For now, only the OpenAI
embedding function is available.
```javascript
import * as lancedb from '@lancedb/lancedb'
import { getRegistry } from '@lancedb/lancedb/embeddings'
const lancedb = require("vectordb");
// You need to provide an OpenAI API key
const apiKey = "sk-..."
// The embedding function will create embeddings for the 'text' column
const func = getRegistry().get("openai").create({apiKey})
```
=== "Rust"
In the Rust SDK, the choices are more limited. For now, only the OpenAI
embedding function is available. But unlike the Python and TypeScript SDKs, you need manually register the OpenAI embedding function.
```toml
// Make sure to include the `openai` feature
[dependencies]
lancedb = {version = "*", features = ["openai"]}
```
```rust
--8<-- "rust/lancedb/examples/openai.rs:imports"
--8<-- "rust/lancedb/examples/openai.rs:openai_embeddings"
const embedding = new lancedb.OpenAIEmbeddingFunction('text', apiKey)
```
## 2. Define the data model or schema
@@ -70,14 +52,14 @@ For this purpose, LanceDB introduces an **embedding functions API**, that allow
`VectorField` tells LanceDB to use the clip embedding function to generate query embeddings for the `vector` column and `SourceField` ensures that when adding data, we automatically use the specified embedding function to encode `image_uri`.
=== "TypeScript"
=== "JavaScript"
For the TypeScript SDK, a schema can be inferred from input data, or an explicit
Arrow schema can be provided.
## 3. Create table and add data
Now that we have chosen/defined our embedding function and the schema,
Now that we have chosen/defined our embedding function and the schema,
we can create the table and ingest data without needing to explicitly generate
the embeddings at all:
@@ -89,26 +71,17 @@ the embeddings at all:
table.add([{"image_uri": u} for u in uris])
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
```javascript
const db = await lancedb.connect("data/sample-lancedb");
const data = [
{ text: "pepperoni"},
{ text: "pineapple"}
]
```ts
--8<-- "nodejs/examples/embedding.ts:imports"
--8<-- "nodejs/examples/embedding.ts:embedding_function"
```
=== "vectordb (deprecated)"
```ts
const db = await lancedb.connect("data/sample-lancedb");
const data = [
{ text: "pepperoni"},
{ text: "pineapple"}
]
const table = await db.createTable("vectors", data, embedding)
```
const table = await db.createTable("vectors", data, embedding)
```
## 4. Querying your table
Not only can you forget about the embeddings during ingestion, you also don't
@@ -121,8 +94,8 @@ need to worry about it when you query the table:
```python
results = (
table.search("dog")
.limit(10)
.to_pandas()
.limit(10)
.to_pandas()
)
```
@@ -133,32 +106,22 @@ need to worry about it when you query the table:
query_image = Image.open(p)
results = (
table.search(query_image)
.limit(10)
.to_pandas()
.limit(10)
.to_pandas()
)
```
Both of the above snippet returns a pandas DataFrame with the 10 closest vectors to the query.
=== "TypeScript"
=== "@lancedb/lancedb"
```ts
const results = await table.search("What's the best pizza topping?")
.limit(10)
.toArray()
```
=== "vectordb (deprecated)
```ts
const results = await table
.search("What's the best pizza topping?")
.limit(10)
.execute()
```
=== "JavaScript"
```javascript
const results = await table
.search("What's the best pizza topping?")
.limit(10)
.execute()
```
The above snippet returns an array of records with the top 10 nearest neighbors to the query.
---

View File

@@ -1,13 +1,13 @@
Due to the nature of vector embeddings, they can be used to represent any kind of data, from text to images to audio.
This makes them a very powerful tool for machine learning practitioners.
However, there's no one-size-fits-all solution for generating embeddings - there are many different libraries and APIs
Due to the nature of vector embeddings, they can be used to represent any kind of data, from text to images to audio.
This makes them a very powerful tool for machine learning practitioners.
However, there's no one-size-fits-all solution for generating embeddings - there are many different libraries and APIs
(both commercial and open source) that can be used to generate embeddings from structured/unstructured data.
LanceDB supports 3 methods of working with embeddings.
1. You can manually generate embeddings for the data and queries. This is done outside of LanceDB.
2. You can use the built-in [embedding functions](./embedding_functions.md) to embed the data and queries in the background.
3. You can define your own [custom embedding function](./custom_embedding_function.md)
3. For python users, you can define your own [custom embedding function](./custom_embedding_function.md)
that extends the default embedding functions.
For python users, there is also a legacy [with_embeddings API](./legacy.md).
@@ -18,109 +18,21 @@ It is retained for compatibility and will be removed in a future version.
To get started with embeddings, you can use the built-in embedding functions.
### OpenAI Embedding function
LanceDB registers the OpenAI embeddings function in the registry as `openai`. You can pass any supported model name to the `create`. By default it uses `"text-embedding-ada-002"`.
=== "Python"
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
func = get_registry().get("openai").create(name="text-embedding-ada-002")
class Words(LanceModel):
text: str = func.SourceField()
vector: Vector(func.ndims()) = func.VectorField()
table = db.create_table("words", schema=Words, mode="overwrite")
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
=== "TypeScript"
```typescript
--8<--- "nodejs/examples/embedding.ts:imports"
--8<--- "nodejs/examples/embedding.ts:openai_embeddings"
```
=== "Rust"
```rust
--8<--- "rust/lancedb/examples/openai.rs:imports"
--8<--- "rust/lancedb/examples/openai.rs:openai_embeddings"
```
### Sentence Transformers Embedding function
LanceDB registers the Sentence Transformers embeddings function in the registry as `sentence-transformers`. You can pass any supported model name to the `create`. By default it uses `"sentence-transformers/paraphrase-MiniLM-L6-v2"`.
=== "Python"
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
model = get_registry().get("sentence-transformers").create(name="BAAI/bge-small-en-v1.5", device="cpu")
class Words(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
table = db.create_table("words", schema=Words)
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
=== "TypeScript"
Coming Soon!
=== "Rust"
Coming Soon!
### Embedding function with LanceDB cloud
Embedding functions are now supported on LanceDB cloud. The embeddings will be generated on the source device and sent to the cloud. This means that the source device must have the necessary resources to generate the embeddings. Here's an example using the OpenAI embedding function:
```python
import os
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
os.environ['OPENAI_API_KEY'] = "..."
db = lancedb.connect(
uri="db://....",
api_key="sk_...",
region="us-east-1"
)
func = get_registry().get("openai").create()
db = lancedb.connect("/tmp/db")
func = get_registry().get("openai").create(name="text-embedding-ada-002")
class Words(LanceModel):
text: str = func.SourceField()
vector: Vector(func.ndims()) = func.VectorField()
table = db.create_table("words", schema=Words)
table = db.create_table("words", schema=Words, mode="overwrite")
table.add(
[
{"text": "hello world"},
@@ -132,3 +44,31 @@ query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```
### Sentence Transformers Embedding function
LanceDB registers the Sentence Transformers embeddings function in the registry as `sentence-transformers`. You can pass any supported model name to the `create`. By default it uses `"sentence-transformers/paraphrase-MiniLM-L6-v2"`.
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("/tmp/db")
model = get_registry().get("sentence-transformers").create(name="BAAI/bge-small-en-v1.5", device="cpu")
class Words(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
table = db.create_table("words", schema=Words)
table.add(
[
{"text": "hello world"},
{"text": "goodbye world"}
]
)
query = "greetings"
actual = table.search(query).limit(1).to_pydantic(Words)[0]
print(actual.text)
```

View File

@@ -10,7 +10,7 @@ LanceDB provides language APIs, allowing you to embed a database in your languag
## Applications powered by LanceDB
| Project Name | Description |
| --- | --- |
| **Ultralytics Explorer 🚀**<br>[![Ultralytics](https://img.shields.io/badge/Ultralytics-Docs-green?labelColor=0f3bc4&style=flat-square&logo=https://cdn.prod.website-files.com/646dd1f1a3703e451ba81ecc/64994922cf2a6385a4bf4489_UltralyticsYOLO_mark_blue.svg&link=https://docs.ultralytics.com/datasets/explorer/)](https://docs.ultralytics.com/datasets/explorer/)<br>[![Open In Collab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/ultralytics/ultralytics/blob/main/docs/en/datasets/explorer/explorer.ipynb) | - 🔍 **Explore CV Datasets**: Semantic search, SQL queries, vector similarity, natural language.<br>- 🖥️ **GUI & Python API**: Seamless dataset interaction.<br>- ⚡ **Efficient & Scalable**: Leverages LanceDB for large datasets.<br>- 📊 **Detailed Analysis**: Easily analyze data patterns.<br>- 🌐 **Browser GUI Demo**: Create embeddings, search images, run queries. |
| **Website Chatbot🤖**<br>[![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/lancedb/lancedb-vercel-chatbot)<br>[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Flancedb%2Flancedb-vercel-chatbot&amp;env=OPENAI_API_KEY&amp;envDescription=OpenAI%20API%20Key%20for%20chat%20completion.&amp;project-name=lancedb-vercel-chatbot&amp;repository-name=lancedb-vercel-chatbot&amp;demo-title=LanceDB%20Chatbot%20Demo&amp;demo-description=Demo%20website%20chatbot%20with%20LanceDB.&amp;demo-url=https%3A%2F%2Flancedb.vercel.app&amp;demo-image=https%3A%2F%2Fi.imgur.com%2FazVJtvr.png) | - 🌐 **Chatbot from Sitemap/Docs**: Create a chatbot using site or document context.<br>- 🚀 **Embed LanceDB in Next.js**: Lightweight, on-prem storage.<br>- 🧠 **AI-Powered Context Retrieval**: Efficiently access relevant data.<br>- 🔧 **Serverless & Native JS**: Seamless integration with Next.js.<br>- ⚡ **One-Click Deploy on Vercel**: Quick and easy setup.. |
| Project Name | Description | Screenshot |
|-----------------------------------------------------|----------------------------------------------------------------------------------------------------------------------|-------------------------------------------|
| [YOLOExplorer](https://github.com/lancedb/yoloexplorer) | Iterate on your YOLO / CV datasets using SQL, Vector semantic search, and more within seconds | ![YOLOExplorer](https://github.com/lancedb/vectordb-recipes/assets/15766192/ae513a29-8f15-4e0b-99a1-ccd8272b6131) |
| [Website Chatbot (Deployable Vercel Template)](https://github.com/lancedb/lancedb-vercel-chatbot) | Create a chatbot from the sitemap of any website/docs of your choice. Built using vectorDB serverless native javascript package. | ![Chatbot](../assets/vercel-template.gif) |

View File

@@ -1,27 +0,0 @@
# AI Agents: Intelligent Collaboration🤖
Think of a platform💻 where AI Agents🤖 can seamlessly exchange information, coordinate over tasks, and achieve shared targets with great efficiency📈🚀.
## Vector-Based Coordination: The Technical Advantage
Leveraging LanceDB's vector-based capabilities, our coordination application enables AI agents to communicate and collaborate through dense vector representations 🤖. AI agents can exchange information, coordinate on a task or work towards a common goal, just by giving queries📝.
| **AI Agents** | **Description** | **Links** |
|:--------------|:----------------|:----------|
| **AI Agents: Reducing Hallucinationt📊** | 🤖💡 Reduce AI hallucinations using Critique-Based Contexting! Learn by Simplifying and Automating tedious workflows by going through fitness trainer agent example.💪 | [![Github](../../assets/github.svg)][hullucination_github] <br>[![Open In Collab](../../assets/colab.svg)][hullucination_colab] <br>[![Python](../../assets/python.svg)][hullucination_python] <br>[![Ghost](../../assets/ghost.svg)][hullucination_ghost] |
| **AI Trends Searcher: CrewAI🔍** | 🔍️ Learn about CrewAI Agents ! Utilize the features of CrewAI - Role-based Agents, Task Management, and Inter-agent Delegation ! Make AI agents work together to do tricky stuff 😺| [![Github](../../assets/github.svg)][trend_github] <br>[![Open In Collab](../../assets/colab.svg)][trend_colab] <br>[![Ghost](../../assets/ghost.svg)][trend_ghost] |
| **SuperAgent Autogen🤖** | 💻 AI interactions with the Super Agent! Integrating Autogen, LanceDB, LangChain, LiteLLM, and Ollama to create AI agent that excels in understanding and processing complex queries.🤖 | [![Github](../../assets/github.svg)][superagent_github] <br>[![Open In Collab](../../assets/colab.svg)][superagent_colab] |
[hullucination_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/reducing_hallucinations_ai_agents
[hullucination_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/reducing_hallucinations_ai_agents/main.ipynb
[hullucination_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/reducing_hallucinations_ai_agents/main.py
[hullucination_ghost]: https://blog.lancedb.com/how-to-reduce-hallucinations-from-llm-powered-agents-using-long-term-memory-72f262c3cc1f/
[trend_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/AI-Trends-with-CrewAI
[trend_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/AI-Trends-with-CrewAI/CrewAI_AI_Trends.ipynb
[trend_ghost]: https://blog.lancedb.com/track-ai-trends-crewai-agents-rag/
[superagent_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/SuperAgent_Autogen
[superagent_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/SuperAgent_Autogen/main.ipynb

View File

@@ -1,13 +0,0 @@
# **Build from Scratch with LanceDB 🛠️🚀**
Start building your GenAI applications from the ground up using LanceDB's efficient vector-based document retrieval capabilities! 📑
**Get Started in Minutes ⏱️**
These examples provide a solid foundation for building your own GenAI applications using LanceDB. Jump from idea to proof of concept quickly with applied examples. Get started and see what you can create! 💻
| **Build From Scratch** | **Description** | **Links** |
|:-------------------------------------------|:-------------------------------------------------------------------------------------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Build RAG from Scratch🚀💻** | 📝 Create a **Retrieval-Augmented Generation** (RAG) model from scratch using LanceDB. | [![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/lancedb/vectordb-recipes/tree/main/tutorials/RAG-from-Scratch)<br>[![Open In Collab](https://colab.research.google.com/assets/colab-badge.svg)]() |
| **Local RAG from Scratch with Llama3🔥💡** | 🐫 Build a local RAG model using **Llama3** and **LanceDB** for fast and efficient text generation. | [![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/lancedb/vectordb-recipes/tree/main/tutorials/Local-RAG-from-Scratch)<br>[![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/Local-RAG-from-Scratch/rag.py) |
| **Multi-Head RAG from Scratch📚💻** | 🤯 Develop a **Multi-Head RAG model** from scratch, enabling generation of text based on multiple documents. | [![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white)](https://github.com/lancedb/vectordb-recipes/tree/main/tutorials/Multi-Head-RAG-from-Scratch)<br>[![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)](https://github.com/lancedb/vectordb-recipes/tree/main/tutorials/Multi-Head-RAG-from-Scratch) |

View File

@@ -1,41 +0,0 @@
**Chatbot Application with LanceDB 🤖**
====================================================================
Create an innovative chatbot application that utilizes LanceDB for efficient vector-based response generation! 🌐✨
**Introduction 👋✨**
Users can input their queries, allowing the chatbot to retrieve relevant context seamlessly. 🔍📚 This enables the generation of coherent and context-aware replies that enhance user experience. 🌟🤝 Dive into the world of advanced conversational AI and streamline interactions with powerful data management! 🚀💡
| **Chatbot** | **Description** | **Links** |
|:----------------|:-----------------|:-----------|
| **Databricks DBRX Website Bot ⚡️** | Unlock magical conversations with the Hogwarts chatbot, powered by Open-source RAG, DBRX, LanceDB, LLama-index, and Hugging Face Embeddings, delivering enchanting user experiences and spellbinding interactions ✨ | [![GitHub](../../assets/github.svg)][databricks_github] <br>[![Python](../../assets/python.svg)][databricks_python] |
| **CLI SDK Manual Chatbot Locally 💻** | CLI chatbot for SDK/hardware documents, powered by Local RAG, LLama3, Ollama, LanceDB, and Openhermes Embeddings, built with Phidata Assistant and Knowledge Base for instant technical support 🤖 | [![GitHub](../../assets/github.svg)][clisdk_github] <br>[![Python](../../assets/python.svg)][clisdk_python] |
| **Youtube Transcript Search QA Bot 📹** | Unlock the power of YouTube transcripts with a Q&A bot, leveraging natural language search and LanceDB for effortless data management and instant answers 💬 | [![GitHub](../../assets/github.svg)][youtube_github] <br>[![Open In Collab](../../assets/colab.svg)][youtube_colab] <br>[![Python](../../assets/python.svg)][youtube_python] |
| **Code Documentation Q&A Bot with LangChain 🤖** | Revolutionize code documentation with a Q&A bot, powered by LangChain and LanceDB, allowing effortless querying of documentation using natural language, demonstrated with Numpy 1.26 docs 📚 | [![GitHub](../../assets/github.svg)][docs_github] <br>[![Open In Collab](../../assets/colab.svg)][docs_colab] <br>[![Python](../../assets/python.svg)][docs_python] |
| **Context-aware Chatbot using Llama 2 & LanceDB 🤖** | Experience the future of conversational AI with a context-aware chatbot, powered by Llama 2, LanceDB, and LangChain, enabling intuitive and meaningful conversations with your data 📚💬 | [![GitHub](../../assets/github.svg)][aware_github] <br>[![Open In Collab](../../assets/colab.svg)][aware_colab] <br>[![Ghost](../../assets/ghost.svg)][aware_ghost] |
| **Chat with csv using Hybrid Search 📊** | Revolutionize data interaction with a chat application that harnesses LanceDB's hybrid search capabilities to converse with CSV and Excel files, enabling efficient and scalable data exploration and analysis 🚀 | [![GitHub](../../assets/github.svg)][csv_github] <br>[![Open In Collab](../../assets/colab.svg)][csv_colab] <br>[![Ghost](../../assets/ghost.svg)][csv_ghost] |
[databricks_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/databricks_DBRX_website_bot
[databricks_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/databricks_DBRX_website_bot/main.py
[clisdk_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/CLI-SDK-Manual-Chatbot-Locally
[clisdk_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/CLI-SDK-Manual-Chatbot-Locally/assistant.py
[youtube_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Youtube-Search-QA-Bot
[youtube_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Youtube-Search-QA-Bot/main.ipynb
[youtube_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Youtube-Search-QA-Bot/main.py
[docs_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Code-Documentation-QA-Bot
[docs_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Code-Documentation-QA-Bot/main.ipynb
[docs_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Code-Documentation-QA-Bot/main.py
[aware_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/chatbot_using_Llama2_&_lanceDB
[aware_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/chatbot_using_Llama2_&_lanceDB/main.ipynb
[aware_ghost]: https://blog.lancedb.com/context-aware-chatbot-using-llama-2-lancedb-as-vector-database-4d771d95c755
[csv_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/Chat_with_csv_file
[csv_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Chat_with_csv_file/main.ipynb
[csv_ghost]: https://blog.lancedb.com/p/d8c71df4-e55f-479a-819e-cde13354a6a3/

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**Evaluation: Assessing Text Performance with Precision 📊💡**
====================================================================
**Evaluation Fundamentals 📊**
Evaluation is a comprehensive tool designed to measure the performance of text-based inputs, enabling data-driven optimization and improvement 📈.
**Text Evaluation 101 📚**
By leveraging cutting-edge technologies, this provides a robust framework for evaluating reference and candidate texts across various metrics 📊, ensuring high-quality text outputs that meet specific requirements and standards 📝.
| **Evaluation** | **Description** | **Links** |
| -------------- | --------------- | --------- |
| **Evaluating Prompts with Prompttools 🤖** | Compare, visualize & evaluate embedding functions (incl. OpenAI) across metrics like latency & custom evaluation 📈📊 | [![Github](../../assets/github.svg)][prompttools_github] <br>[![Open In Collab](../../assets/colab.svg)][prompttools_colab] |
| **Evaluating RAG with RAGAs and GPT-4o 📊** | Evaluate RAG pipelines with cutting-edge metrics and tools, integrate with CI/CD for continuous performance checks, and generate responses with GPT-4o 🤖📈 | [![Github](../../assets/github.svg)][RAGAs_github] <br>[![Open In Collab](../../assets/colab.svg)][RAGAs_colab] |
[prompttools_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/prompttools-eval-prompts
[prompttools_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/prompttools-eval-prompts/main.ipynb
[RAGAs_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Evaluating_RAG_with_RAGAs
[RAGAs_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Evaluating_RAG_with_RAGAs/Evaluating_RAG_with_RAGAs.ipynb

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# **Multimodal Search with LanceDB 🤹‍♂️🔍**
Experience the future of search with LanceDB's multimodal capabilities. Combine text and image queries to find the most relevant results in your corpus ! 🔓💡
**Explore the Future of Search 🚀**
LanceDB supports multimodal search by indexing and querying vector representations of text and image data 🤖. This enables efficient retrieval of relevant documents and images using vector-based similarity search 📊. The platform facilitates cross-modal search, allowing for text-image and image-text retrieval, and supports scalable indexing of high-dimensional vector spaces 💻.
| **Multimodal** | **Description** | **Links** |
|:----------------|:-----------------|:-----------|
| **Multimodal CLIP: DiffusionDB 🌐💥** | Revolutionize search with Multimodal CLIP and DiffusionDB, combining text and image understanding for a new dimension of discovery! 🔓 | [![GitHub](../../assets/github.svg)][Clip_diffusionDB_github] <br>[![Open In Collab](../../assets/colab.svg)][Clip_diffusionDB_colab] <br>[![Python](../../assets/python.svg)][Clip_diffusionDB_python] <br>[![Ghost](../../assets/ghost.svg)][Clip_diffusionDB_ghost] |
| **Multimodal CLIP: Youtube Videos 📹👀** | Search Youtube videos using Multimodal CLIP, finding relevant content with ease and accuracy! 🎯 | [![Github](../../assets/github.svg)][Clip_youtube_github] <br>[![Open In Collab](../../assets/colab.svg)][Clip_youtube_colab] <br> [![Python](../../assets/python.svg)][Clip_youtube_python] <br>[![Ghost](../../assets/ghost.svg)][Clip_youtube_python] |
| **Multimodal Image + Text Search 📸🔍** | Discover relevant documents and images with a single query, using LanceDB's multimodal search capabilities to bridge the gap between text and visuals! 🌉 | [![GitHub](../../assets/github.svg)](https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_search) <br>[![Open In Collab](../../assets/colab.svg)](https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_search/main.ipynb) <br> [![Python](../../assets/python.svg)](https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_search/main.py)<br> [![Ghost](../../assets/ghost.svg)](https://blog.lancedb.com/multi-modal-ai-made-easy-with-lancedb-clip-5aaf8801c939/) |
| **Cambrian-1: Vision-Centric Image Exploration 🔍👀** | Dive into vision-centric exploration of images with Cambrian-1, powered by LanceDB's multimodal search to uncover new insights! 🔎 | [![Kaggle](https://img.shields.io/badge/Kaggle-035a7d?style=for-the-badge&logo=kaggle&logoColor=white)](https://www.kaggle.com/code/prasantdixit/cambrian-1-vision-centric-exploration-of-images/)<br> [![Ghost](../../assets/ghost.svg)](https://blog.lancedb.com/cambrian-1-vision-centric-exploration/) |
[Clip_diffusionDB_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_clip_diffusiondb
[Clip_diffusionDB_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_clip_diffusiondb/main.ipynb
[Clip_diffusionDB_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_clip_diffusiondb/main.py
[Clip_diffusionDB_ghost]: https://blog.lancedb.com/multi-modal-ai-made-easy-with-lancedb-clip-5aaf8801c939/
[Clip_youtube_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_video_search
[Clip_youtube_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multimodal_video_search/main.ipynb
[Clip_youtube_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multimodal_video_search/main.py
[Clip_youtube_ghost]: https://blog.lancedb.com/multi-modal-ai-made-easy-with-lancedb-clip-5aaf8801c939/

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**RAG: Revolutionize Information Retrieval with LanceDB 🔓🧐**
====================================================================
Unlock the full potential of Retrieval-Augmented Generation (RAG) with LanceDB, a solution for efficient vector-based information retrieval 📊.
**Experience the Future of Search 🔄**
RAG integrates large language models (LLMs) with scalable knowledge bases, enabling efficient information retrieval and answer generation 🤖. By applying RAG to industry-specific use cases, developers can optimize query processing 📊, reduce response latency ⏱️, and improve resource utilization 💻. LanceDB provides a robust framework for integrating LLMs with external knowledge sources, facilitating accurate and informative responses 📝.
| **RAG** | **Description** | **Links** |
|----------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------|
| **RAG with Matryoshka Embeddings and LlamaIndex** 🪆🔗 | Utilize **Matryoshka embeddings** and **LlamaIndex** to improve the efficiency and accuracy of your RAG models. 📈✨ | [![Github](../../assets/github.svg)][matryoshka_github] <br>[![Open In Collab](../../assets/colab.svg)][matryoshka_colab] |
| **Improve RAG with Re-ranking** 📈🔄 | Enhance your RAG applications by implementing **re-ranking strategies** for more relevant document retrieval. 📚🔍 | [![Github](../../assets/github.svg)][rag_reranking_github] <br>[![Open In Collab](../../assets/colab.svg)][rag_reranking_colab] <br>[![Ghost](../../assets/ghost.svg)][rag_reranking_ghost] |
| **Instruct-Multitask** 🧠🎯 | Integrate the **Instruct Embedding Model** with LanceDB to streamline your embedding API, reducing redundant code and overhead. 🌐📊 | [![Github](../../assets/github.svg)][instruct_multitask_github] <br>[![Open In Collab](../../assets/colab.svg)][instruct_multitask_colab] <br>[![Python](../../assets/python.svg)][instruct_multitask_python] <br>[![Ghost](../../assets/ghost.svg)][instruct_multitask_ghost] |
| **Improve RAG with HyDE** 🌌🔍 | Use **Hypothetical Document Embeddings** for efficient, accurate, and unsupervised dense retrieval. 📄🔍 | [![Github](../../assets/github.svg)][hyde_github] <br>[![Open In Collab](../../assets/colab.svg)][hyde_colab]<br>[![Ghost](../../assets/ghost.svg)][hyde_ghost] |
| **Improve RAG with LOTR** 🧙‍♂️📜 | Enhance RAG with **Lord of the Retriever (LOTR)** to address 'Lost in the Middle' challenges, especially in medical data. 🌟📜 | [![Github](../../assets/github.svg)][lotr_github] <br>[![Open In Collab](../../assets/colab.svg)][lotr_colab] <br>[![Ghost](../../assets/ghost.svg)][lotr_ghost] |
| **Advanced RAG: Parent Document Retriever** 📑🔗 | Use **Parent Document & Bigger Chunk Retriever** to maintain context and relevance when generating related content. 🎵📄 | [![Github](../../assets/github.svg)][parent_doc_retriever_github] <br>[![Open In Collab](../../assets/colab.svg)][parent_doc_retriever_colab] <br>[![Ghost](../../assets/ghost.svg)][parent_doc_retriever_ghost] |
| **Corrective RAG with Langgraph** 🔧📊 | Enhance RAG reliability with **Corrective RAG (CRAG)** by self-reflecting and fact-checking for accurate and trustworthy results. ✅🔍 |[![Github](../../assets/github.svg)][corrective_rag_github] <br>[![Open In Collab](../../assets/colab.svg)][corrective_rag_colab] <br>[![Ghost](../../assets/ghost.svg)][corrective_rag_ghost] |
| **Contextual Compression with RAG** 🗜️🧠 | Apply **contextual compression techniques** to condense large documents while retaining essential information. 📄🗜️ | [![Github](../../assets/github.svg)][compression_rag_github] <br>[![Open In Collab](../../assets/colab.svg)][compression_rag_colab] <br>[![Ghost](../../assets/ghost.svg)][compression_rag_ghost] |
| **Improve RAG with FLARE** 🔥| Enable users to ask questions directly to academic papers, focusing on ArXiv papers, with Forward-Looking Active REtrieval augmented generation.🚀🌟 | [![Github](../../assets/github.svg)][flare_github] <br>[![Open In Collab](../../assets/colab.svg)][flare_colab] <br>[![Ghost](../../assets/ghost.svg)][flare_ghost] |
| **Query Expansion and Reranker** 🔍🔄 | Enhance RAG with query expansion using Large Language Models and advanced **reranking methods** like Cross Encoders, ColBERT v2, and FlashRank for improved document retrieval precision and recall 🔍📈 | [![Github](../../assets/github.svg)][query_github] <br>[![Open In Collab](../../assets/colab.svg)][query_colab] |
| **RAG Fusion** ⚡🌐 | Revolutionize search with RAG Fusion, utilizing the **RRF algorithm** to rerank documents based on user queries, and leveraging LanceDB and OPENAI Embeddings for efficient information retrieval ⚡🌐 | [![Github](../../assets/github.svg)][fusion_github] <br>[![Open In Collab](../../assets/colab.svg)][fusion_colab] |
| **Agentic RAG** 🤖📚 | Unlock autonomous information retrieval with **Agentic RAG**, a framework of **intelligent agents** that collaborate to synthesize, summarize, and compare data across sources, enabling proactive and informed decision-making 🤖📚 | [![Github](../../assets/github.svg)][agentic_github] <br>[![Open In Collab](../../assets/colab.svg)][agentic_colab] |
[matryoshka_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/RAG-with_MatryoshkaEmbed-Llamaindex
[matryoshka_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/RAG-with_MatryoshkaEmbed-Llamaindex/RAG_with_MatryoshkaEmbedding_and_Llamaindex.ipynb
[rag_reranking_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/RAG_Reranking
[rag_reranking_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/RAG_Reranking/main.ipynb
[rag_reranking_ghost]: https://blog.lancedb.com/simplest-method-to-improve-rag-pipeline-re-ranking-cf6eaec6d544
[instruct_multitask_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/instruct-multitask
[instruct_multitask_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/instruct-multitask/main.ipynb
[instruct_multitask_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/instruct-multitask/main.py
[instruct_multitask_ghost]: https://blog.lancedb.com/multitask-embedding-with-lancedb-be18ec397543
[hyde_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Advance-RAG-with-HyDE
[hyde_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Advance-RAG-with-HyDE/main.ipynb
[hyde_ghost]: https://blog.lancedb.com/advanced-rag-precise-zero-shot-dense-retrieval-with-hyde-0946c54dfdcb
[lotr_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Advance_RAG_LOTR
[lotr_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Advance_RAG_LOTR/main.ipynb
[lotr_ghost]: https://blog.lancedb.com/better-rag-with-lotr-lord-of-retriever-23c8336b9a35
[parent_doc_retriever_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/parent_document_retriever
[parent_doc_retriever_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/parent_document_retriever/main.ipynb
[parent_doc_retriever_ghost]: https://blog.lancedb.com/modified-rag-parent-document-bigger-chunk-retriever-62b3d1e79bc6
[corrective_rag_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/Corrective-RAG-with_Langgraph
[corrective_rag_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Corrective-RAG-with_Langgraph/CRAG_with_Langgraph.ipynb
[corrective_rag_ghost]: https://blog.lancedb.com/implementing-corrective-rag-in-the-easiest-way-2/
[compression_rag_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Contextual-Compression-with-RAG
[compression_rag_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Contextual-Compression-with-RAG/main.ipynb
[compression_rag_ghost]: https://blog.lancedb.com/enhance-rag-integrate-contextual-compression-and-filtering-for-precision-a29d4a810301/
[flare_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/better-rag-FLAIR
[flare_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/better-rag-FLAIR/main.ipynb
[flare_ghost]: https://blog.lancedb.com/better-rag-with-active-retrieval-augmented-generation-flare-3b66646e2a9f/
[query_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/QueryExpansion&Reranker
[query_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/QueryExpansion&Reranker/main.ipynb
[fusion_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/RAG_Fusion
[fusion_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/RAG_Fusion/main.ipynb
[agentic_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/Agentic_RAG
[agentic_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/Agentic_RAG/main.ipynb

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**Vector Search: Unlock Efficient Document Retrieval 🔓👀**
====================================================================
Unlock the power of vector search with LanceDB, a cutting-edge solution for efficient vector-based document retrieval 📊.
**Vector Search Capabilities in LanceDB🔝**
LanceDB implements vector search algorithms for efficient document retrieval and analysis 📊. This enables fast and accurate discovery of relevant documents, leveraging dense vector representations 🤖. The platform supports scalable indexing and querying of high-dimensional vector spaces, facilitating precise document matching and retrieval 📈.
| **Vector Search** | **Description** | **Links** |
|:-----------------|:---------------|:---------|
| **Inbuilt Hybrid Search 🔄** | Combine the power of traditional search algorithms with LanceDB's vector-based search for a robust and efficient search experience 📊 | [![Github](../../assets/github.svg)][inbuilt_hybrid_search_github] <br>[![Open In Collab](../../assets/colab.svg)][inbuilt_hybrid_search_colab] |
| **Hybrid Search with BM25 and LanceDB 💡** | Synergizes BM25's keyword-focused precision (term frequency, document length normalization, bias-free retrieval) with LanceDB's semantic understanding (contextual analysis, query intent alignment) for nuanced search results in complex datasets 📈 | [![Github](../../assets/github.svg)][BM25_github] <br>[![Open In Collab](../../assets/colab.svg)][BM25_colab] <br>[![Ghost](../../assets/ghost.svg)][BM25_ghost] |
| **NER-powered Semantic Search 🔎** | Unlock contextual understanding with Named Entity Recognition (NER) methods: Dictionary-Based, Rule-Based, and Deep Learning-Based, to accurately identify and extract entities, enabling precise semantic search results 🗂️ | [![Github](../../assets/github.svg)][NER_github] <br>[![Open In Collab](../../assets/colab.svg)][NER_colab] <br>[![Ghost](../../assets/ghost.svg)][NER_ghost]|
| **Audio Similarity Search using Vector Embeddings 🎵** | Create vector embeddings of audio files to find similar audio content, enabling efficient audio similarity search and retrieval in LanceDB's vector store 📻 |[![Github](../../assets/github.svg)][audio_search_github] <br>[![Open In Collab](../../assets/colab.svg)][audio_search_colab] <br>[![Python](../../assets/python.svg)][audio_search_python]|
| **LanceDB Embeddings API: Multi-lingual Semantic Search 🌎** | Build a universal semantic search table with LanceDB's Embeddings API, supporting multiple languages (e.g., English, French) using cohere's multi-lingual model, for accurate cross-lingual search results 📄 | [![Github](../../assets/github.svg)][mls_github] <br>[![Open In Collab](../../assets/colab.svg)][mls_colab] <br>[![Python](../../assets/python.svg)][mls_python] |
| **Facial Recognition: Face Embeddings 🤖** | Detect, crop, and embed faces using Facenet, then store and query face embeddings in LanceDB for efficient facial recognition and top-K matching results 👥 | [![Github](../../assets/github.svg)][fr_github] <br>[![Open In Collab](../../assets/colab.svg)][fr_colab] |
| **Sentiment Analysis: Hotel Reviews 🏨** | Analyze customer sentiments towards the hotel industry using BERT models, storing sentiment labels, scores, and embeddings in LanceDB, enabling queries on customer opinions and potential areas for improvement 💬 | [![Github](../../assets/github.svg)][sentiment_analysis_github] <br>[![Open In Collab](../../assets/colab.svg)][sentiment_analysis_colab] <br>[![Ghost](../../assets/ghost.svg)][sentiment_analysis_ghost] |
| **Vector Arithmetic with LanceDB ⚖️** | Unlock powerful semantic search capabilities by performing vector arithmetic on embeddings, enabling complex relationships and nuances in data to be captured, and simplifying the process of retrieving semantically similar results 📊 | [![Github](../../assets/github.svg)][arithmetic_github] <br>[![Open In Collab](../../assets/colab.svg)][arithmetic_colab] <br>[![Ghost](../../assets/ghost.svg)][arithmetic_ghost] |
| **Imagebind Demo 🖼️** | Explore the multi-modal capabilities of Imagebind through a Gradio app, leveraging LanceDB API for seamless image search and retrieval experiences 📸 | [![Github](../../assets/github.svg)][imagebind_github] <br> [![Open in Spaces](../../assets/open_hf_space.svg)][imagebind_huggingface] |
| **Search Engine using SAM & CLIP 🔍** | Build a search engine within an image using SAM and CLIP models, enabling object-level search and retrieval, with LanceDB indexing and search capabilities to find the closest match between image embeddings and user queries 📸 | [![Github](../../assets/github.svg)][swi_github] <br>[![Open In Collab](../../assets/colab.svg)][swi_colab] <br>[![Ghost](../../assets/ghost.svg)][swi_ghost] |
| **Zero Shot Object Localization and Detection with CLIP 🔎** | Perform object detection on images using OpenAI's CLIP, enabling zero-shot localization and detection of objects, with capabilities to split images into patches, parse with CLIP, and plot bounding boxes 📊 | [![Github](../../assets/github.svg)][zsod_github] <br>[![Open In Collab](../../assets/colab.svg)][zsod_colab] |
| **Accelerate Vector Search with OpenVINO 🚀** | Boost vector search applications using OpenVINO, achieving significant speedups with CLIP for text-to-image and image-to-image searching, through PyTorch model optimization, FP16 and INT8 format conversion, and quantization with OpenVINO NNCF 📈 | [![Github](../../assets/github.svg)][openvino_github] <br>[![Open In Collab](../../assets/colab.svg)][openvino_colab] <br>[![Ghost](../../assets/ghost.svg)][openvino_ghost] |
| **Zero-Shot Image Classification with CLIP and LanceDB 📸** | Achieve zero-shot image classification using CLIP and LanceDB, enabling models to classify images without prior training on specific use cases, unlocking flexible and adaptable image classification capabilities 🔓 | [![Github](../../assets/github.svg)][zsic_github] <br>[![Open In Collab](../../assets/colab.svg)][zsic_colab] <br>[![Ghost](../../assets/ghost.svg)][zsic_ghost] |
[inbuilt_hybrid_search_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Inbuilt-Hybrid-Search
[inbuilt_hybrid_search_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Inbuilt-Hybrid-Search/Inbuilt_Hybrid_Search_with_LanceDB.ipynb
[BM25_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Hybrid_search_bm25_lancedb
[BM25_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Hybrid_search_bm25_lancedb/main.ipynb
[BM25_ghost]: https://blog.lancedb.com/hybrid-search-combining-bm25-and-semantic-search-for-better-results-with-lan-1358038fe7e6
[NER_github]: https://github.com/lancedb/vectordb-recipes/blob/main/tutorials/NER-powered-Semantic-Search
[NER_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/tutorials/NER-powered-Semantic-Search/NER_powered_Semantic_Search_with_LanceDB.ipynb
[NER_ghost]: https://blog.lancedb.com/ner-powered-semantic-search-using-lancedb-51051dc3e493
[audio_search_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/audio_search
[audio_search_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/audio_search/main.ipynb
[audio_search_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/audio_search/main.py
[mls_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multi-lingual-wiki-qa
[mls_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/multi-lingual-wiki-qa/main.ipynb
[mls_python]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/multi-lingual-wiki-qa/main.py
[fr_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/facial_recognition
[fr_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/facial_recognition/main.ipynb
[sentiment_analysis_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Sentiment-Analysis-Analyse-Hotel-Reviews
[sentiment_analysis_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Sentiment-Analysis-Analyse-Hotel-Reviews/Sentiment_Analysis_using_LanceDB.ipynb
[sentiment_analysis_ghost]: https://blog.lancedb.com/sentiment-analysis-using-lancedb-2da3cb1e3fa6
[arithmetic_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Vector-Arithmetic-with-LanceDB
[arithmetic_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Vector-Arithmetic-with-LanceDB/main.ipynb
[arithmetic_ghost]: https://blog.lancedb.com/vector-arithmetic-with-lancedb-an-intro-to-vector-embeddings/
[imagebind_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/imagebind_demo
[imagebind_huggingface]: https://huggingface.co/spaces/raghavd99/imagebind2
[swi_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/search-within-images-with-sam-and-clip
[swi_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/search-within-images-with-sam-and-clip/main.ipynb
[swi_ghost]: https://blog.lancedb.com/search-within-an-image-331b54e4285e
[zsod_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/zero-shot-object-detection-CLIP
[zsod_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/zero-shot-object-detection-CLIP/zero_shot_object_detection_clip.ipynb
[openvino_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/Accelerate-Vector-Search-Applications-Using-OpenVINO
[openvino_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/Accelerate-Vector-Search-Applications-Using-OpenVINO/clip_text_image_search.ipynb
[openvino_ghost]: https://blog.lancedb.com/accelerate-vector-search-applications-using-openvino-lancedb/
[zsic_github]: https://github.com/lancedb/vectordb-recipes/blob/main/examples/zero-shot-image-classification
[zsic_colab]: https://colab.research.google.com/github/lancedb/vectordb-recipes/blob/main/examples/zero-shot-image-classification/main.ipynb
[zsic_ghost]: https://blog.lancedb.com/zero-shot-image-classification-with-vector-search/

View File

@@ -1,14 +1,10 @@
# Full-text search
LanceDB provides support for full-text search via Lance (before via [Tantivy](https://github.com/quickwit-oss/tantivy) (Python only)), allowing you to incorporate keyword-based search (based on BM25) in your retrieval solutions.
LanceDB provides support for full-text search via [Tantivy](https://github.com/quickwit-oss/tantivy) (currently Python only), allowing you to incorporate keyword-based search (based on BM25) in your retrieval solutions. Our goal is to push the FTS integration down to the Rust level in the future, so that it's available for Rust and JavaScript users as well. Follow along at [this Github issue](https://github.com/lancedb/lance/issues/1195)
Currently, the Lance full text search is missing some features that are in the Tantivy full text search. This includes phrase queries, re-ranking, and customizing the tokenizer. Thus, in Python, Tantivy is still the default way to do full text search and many of the instructions below apply just to Tantivy-based indices.
A hybrid search solution combining vector and full-text search is also on the way.
## Installation (Only for Tantivy-based FTS)
!!! note
No need to install the tantivy dependency if using native FTS
## Installation
To use full-text search, install the dependency [`tantivy-py`](https://github.com/quickwit-oss/tantivy-py):
@@ -19,117 +15,53 @@ pip install tantivy==0.20.1
## Example
Consider that we have a LanceDB table named `my_table`, whose string column `text` we want to index and query via keyword search, the FTS index must be created before you can search via keywords.
Consider that we have a LanceDB table named `my_table`, whose string column `text` we want to index and query via keyword search.
=== "Python"
```python
import lancedb
```python
import lancedb
uri = "data/sample-lancedb"
db = lancedb.connect(uri)
uri = "data/sample-lancedb"
db = lancedb.connect(uri)
table = db.create_table(
"my_table",
data=[
{"vector": [3.1, 4.1], "text": "Frodo was a happy puppy"},
{"vector": [5.9, 26.5], "text": "There are several kittens playing"},
],
)
```
table = db.create_table(
"my_table",
data=[
{"vector": [3.1, 4.1], "text": "Frodo was a happy puppy"},
{"vector": [5.9, 26.5], "text": "There are several kittens playing"},
],
)
## Create FTS index on single column
# passing `use_tantivy=False` to use lance FTS index
# `use_tantivy=True` by default
table.create_fts_index("text")
table.search("puppy").limit(10).select(["text"]).to_list()
# [{'text': 'Frodo was a happy puppy', '_score': 0.6931471824645996}]
# ...
```
The FTS index must be created before you can search via keywords.
=== "TypeScript"
```python
table.create_fts_index("text")
```
```typescript
import * as lancedb from "@lancedb/lancedb";
const uri = "data/sample-lancedb"
const db = await lancedb.connect(uri);
To search an FTS index via keywords, LanceDB's `table.search` accepts a string as input:
const data = [
{ vector: [3.1, 4.1], text: "Frodo was a happy puppy" },
{ vector: [5.9, 26.5], text: "There are several kittens playing" },
];
const tbl = await db.createTable("my_table", data, { mode: "overwrite" });
await tbl.createIndex("text", {
config: lancedb.Index.fts(),
});
```python
table.search("puppy").limit(10).select(["text"]).to_list()
```
await tbl
.search("puppy")
.select(["text"])
.limit(10)
.toArray();
```
This returns the result as a list of dictionaries as follows.
=== "Rust"
```rust
let uri = "data/sample-lancedb";
let db = connect(uri).execute().await?;
let initial_data: Box<dyn RecordBatchReader + Send> = create_some_records()?;
let tbl = db
.create_table("my_table", initial_data)
.execute()
.await?;
tbl
.create_index(&["text"], Index::FTS(FtsIndexBuilder::default()))
.execute()
.await?;
tbl
.query()
.full_text_search(FullTextSearchQuery::new("puppy".to_owned()))
.select(lancedb::query::Select::Columns(vec!["text".to_owned()]))
.limit(10)
.execute()
.await?;
```
It would search on all indexed columns by default, so it's useful when there are multiple indexed columns.
For now, this is supported in tantivy way only.
Passing `fts_columns="text"` if you want to specify the columns to search, but it's not available for Tantivy-based full text search.
```python
[{'text': 'Frodo was a happy puppy', 'score': 0.6931471824645996}]
```
!!! note
LanceDB automatically searches on the existing FTS index if the input to the search is of type `str`. If you provide a vector as input, LanceDB will search the ANN index instead.
## Tokenization
By default the text is tokenized by splitting on punctuation and whitespaces and then removing tokens that are longer than 40 chars. For more language specific tokenization then provide the argument tokenizer_name with the 2 letter language code followed by "_stem". So for english it would be "en_stem".
For now, only the Tantivy-based FTS index supports to specify the tokenizer, so it's only available in Python with `use_tantivy=True`.
=== "use_tantivy=True"
```python
table.create_fts_index("text", use_tantivy=True, tokenizer_name="en_stem")
```
=== "use_tantivy=False"
[**Not supported yet**](https://github.com/lancedb/lance/issues/1195)
the following [languages](https://docs.rs/tantivy/latest/tantivy/tokenizer/enum.Language.html) are currently supported.
## Index multiple columns
If you have multiple string columns to index, there's no need to combine them manually -- simply pass them all as a list to `create_fts_index`:
=== "use_tantivy=True"
```python
table.create_fts_index(["text1", "text2"])
```
=== "use_tantivy=False"
[**Not supported yet**](https://github.com/lancedb/lance/issues/1195)
```python
table.create_fts_index(["text1", "text2"])
```
Note that the search API call does not change - you can search over all indexed columns at once.
@@ -139,48 +71,19 @@ Currently the LanceDB full text search feature supports *post-filtering*, meanin
applied on top of the full text search results. This can be invoked via the familiar
`where` syntax:
=== "Python"
```python
table.search("puppy").limit(10).where("meta='foo'").to_list()
```
=== "TypeScript"
```typescript
await tbl
.search("apple")
.select(["id", "doc"])
.limit(10)
.where("meta='foo'")
.toArray();
```
=== "Rust"
```rust
table
.query()
.full_text_search(FullTextSearchQuery::new(words[0].to_owned()))
.select(lancedb::query::Select::Columns(vec!["doc".to_owned()]))
.limit(10)
.only_if("meta='foo'")
.execute()
.await?;
```
```python
table.search("puppy").limit(10).where("meta='foo'").to_list()
```
## Sorting
!!! warning "Warn"
Sorting is available for only Tantivy-based FTS
You can pre-sort the documents by specifying `ordering_field_names` when
creating the full-text search index. Once pre-sorted, you can then specify
`ordering_field_name` while searching to return results sorted by the given
field. For example,
field. For example,
```python
table.create_fts_index(["text_field"], use_tantivy=True, ordering_field_names=["sort_by_field"])
```
table.create_fts_index(["text_field"], ordering_field_names=["sort_by_field"])
(table.search("terms", ordering_field_name="sort_by_field")
.limit(20)
@@ -193,8 +96,8 @@ table.create_fts_index(["text_field"], use_tantivy=True, ordering_field_names=["
error will be raised that looks like `ValueError: The field does not exist: xxx`
!!! note
The fields to sort on must be of typed unsigned integer, or else you will see
an error during indexing that looks like
The fields to sort on must be of typed unsigned integer, or else you will see
an error during indexing that looks like
`TypeError: argument 'value': 'float' object cannot be interpreted as an integer`.
!!! note
@@ -204,9 +107,6 @@ table.create_fts_index(["text_field"], use_tantivy=True, ordering_field_names=["
## Phrase queries vs. terms queries
!!! warning "Warn"
Phrase queries are available for only Tantivy-based FTS
For full-text search you can specify either a **phrase** query like `"the old man and the sea"`,
or a **terms** search query like `"(Old AND Man) AND Sea"`. For more details on the terms
query syntax, see Tantivy's [query parser rules](https://docs.rs/tantivy/latest/tantivy/query/struct.QueryParser.html).
@@ -233,15 +133,14 @@ enforce it in one of two ways:
1. Place the double-quoted query inside single quotes. For example, `table.search('"they could have been dogs OR cats"')` is treated as
a phrase query.
1. Explicitly declare the `phrase_query()` method. This is useful when you have a phrase query that
2. Explicitly declare the `phrase_query()` method. This is useful when you have a phrase query that
itself contains double quotes. For example, `table.search('the cats OR dogs were not really "pets" at all').phrase_query()`
is treated as a phrase query.
In general, a query that's declared as a phrase query will be wrapped in double quotes during parsing, with nested
double quotes replaced by single quotes.
## Configurations (Only for Tantivy-based FTS)
## Configurations
By default, LanceDB configures a 1GB heap size limit for creating the index. You can
reduce this if running on a smaller node, or increase this for faster performance while
@@ -255,8 +154,6 @@ table.create_fts_index(["text1", "text2"], writer_heap_size=heap, replace=True)
## Current limitations
For that Tantivy-based FTS:
1. Currently we do not yet support incremental writes.
If you add data after FTS index creation, it won't be reflected
in search results until you do a full reindex.

View File

@@ -1,108 +0,0 @@
# Building Scalar Index
Similar to many SQL databases, LanceDB supports several types of Scalar indices to accelerate search
over scalar columns.
- `BTREE`: The most common type is BTREE. This index is inspired by the btree data structure
although only the first few layers of the btree are cached in memory.
It will perform well on columns with a large number of unique values and few rows per value.
- `BITMAP`: this index stores a bitmap for each unique value in the column.
This index is useful for columns with a finite number of unique values and many rows per value.
For example, columns that represent "categories", "labels", or "tags"
- `LABEL_LIST`: a special index that is used to index list columns whose values have a finite set of possibilities.
For example, a column that contains lists of tags (e.g. `["tag1", "tag2", "tag3"]`) can be indexed with a `LABEL_LIST` index.
| Data Type | Filter | Index Type |
| --------------------------------------------------------------- | ----------------------------------------- | ------------ |
| Numeric, String, Temporal | `<`, `=`, `>`, `in`, `between`, `is null` | `BTREE` |
| Boolean, numbers or strings with fewer than 1,000 unique values | `<`, `=`, `>`, `in`, `between`, `is null` | `BITMAP` |
| List of low cardinality of numbers or strings | `array_has_any`, `array_has_all` | `LABEL_LIST` |
=== "Python"
```python
import lancedb
books = [
{"book_id": 1, "publisher": "plenty of books", "tags": ["fantasy", "adventure"]},
{"book_id": 2, "publisher": "book town", "tags": ["non-fiction"]},
{"book_id": 3, "publisher": "oreilly", "tags": ["textbook"]}
]
db = lancedb.connect("./db")
table = db.create_table("books", books)
table.create_scalar_index("book_id") # BTree by default
table.create_scalar_index("publisher", index_type="BITMAP")
```
=== "Typescript"
=== "@lancedb/lancedb"
```js
const db = await lancedb.connect("data");
const tbl = await db.openTable("my_vectors");
await tbl.create_index("book_id");
await tlb.create_index("publisher", { config: lancedb.Index.bitmap() })
```
For example, the following scan will be faster if the column `my_col` has a scalar index:
=== "Python"
```python
import lancedb
table = db.open_table("books")
my_df = table.search().where("book_id = 2").to_pandas()
```
=== "Typescript"
=== "@lancedb/lancedb"
```js
const db = await lancedb.connect("data");
const tbl = await db.openTable("books");
await tbl
.query()
.where("book_id = 2")
.limit(10)
.toArray();
```
Scalar indices can also speed up scans containing a vector search or full text search, and a prefilter:
=== "Python"
```python
import lancedb
data = [
{"book_id": 1, "vector": [1, 2]},
{"book_id": 2, "vector": [3, 4]},
{"book_id": 3, "vector": [5, 6]}
]
table = db.create_table("book_with_embeddings", data)
(
table.search([1, 2])
.where("book_id != 3", prefilter=True)
.to_pandas()
)
```
=== "Typescript"
=== "@lancedb/lancedb"
```js
const db = await lancedb.connect("data/lance");
const tbl = await db.openTable("book_with_embeddings");
await tbl.search(Array(1536).fill(1.2))
.where("book_id != 3") // prefilter is default behavior.
.limit(10)
.toArray();
```

View File

@@ -32,54 +32,28 @@ LanceDB OSS supports object stores such as AWS S3 (and compatible stores), Azure
db = lancedb.connect("az://bucket/path")
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
AWS S3:
AWS S3:
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path");
```
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("s3://bucket/path");
```
Google Cloud Storage:
Google Cloud Storage:
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("gs://bucket/path");
```
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("gs://bucket/path");
```
Azure Blob Storage:
Azure Blob Storage:
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("az://bucket/path");
```
=== "vectordb (deprecated)"
AWS S3:
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path");
```
Google Cloud Storage:
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("gs://bucket/path");
```
Azure Blob Storage:
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("az://bucket/path");
```
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("az://bucket/path");
```
In most cases, when running in the respective cloud and permissions are set up correctly, no additional configuration is required. When running outside of the respective cloud, authentication credentials must be provided. Credentials and other configuration options can be set in two ways: first, by setting environment variables. And second, by passing a `storage_options` object to the `connect` function. For example, to increase the request timeout to 60 seconds, you can set the `TIMEOUT` environment variable to `60s`:
@@ -104,26 +78,13 @@ If you only want this to apply to one particular connection, you can pass the `s
)
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("s3://bucket/path", {
storageOptions: {timeout: "60s"}
});
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path", {
storageOptions: {timeout: "60s"}
});
```
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path",
{storageOptions: {timeout: "60s"}});
```
Getting even more specific, you can set the `timeout` for only a particular table:
@@ -140,33 +101,18 @@ Getting even more specific, you can set the `timeout` for only a particular tabl
)
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
<!-- skip-test -->
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("s3://bucket/path");
const table = db.createTable(
"table",
[{ a: 1, b: 2}],
{storageOptions: {timeout: "60s"}}
);
```
=== "vectordb (deprecated)"
<!-- skip-test -->
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path");
const table = db.createTable(
"table",
[{ a: 1, b: 2}],
{storageOptions: {timeout: "60s"}}
);
```
<!-- skip-test -->
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect("s3://bucket/path");
const table = db.createTable(
"table",
[{ a: 1, b: 2}],
{storageOptions: {timeout: "60s"}}
);
```
!!! info "Storage option casing"
@@ -189,6 +135,7 @@ There are several options that can be set for all object stores, mostly related
| `proxy_ca_certificate` | PEM-formatted CA certificate for proxy connections. |
| `proxy_excludes` | List of hosts that bypass the proxy. This is a comma-separated list of domains and IP masks. Any subdomain of the provided domain will be bypassed. For example, `example.com, 192.168.1.0/24` would bypass `https://api.example.com`, `https://www.example.com`, and any IP in the range `192.168.1.0/24`. |
### AWS S3
To configure credentials for AWS S3, you can use the `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`, and `AWS_SESSION_TOKEN` keys. Region can also be set, but it is not mandatory when using AWS.
@@ -208,39 +155,21 @@ These can be set as environment variables or passed in the `storage_options` par
)
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
awsAccessKeyId: "my-access-key",
awsSecretAccessKey: "my-secret-key",
awsSessionToken: "my-session-token",
}
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
awsAccessKeyId: "my-access-key",
awsSecretAccessKey: "my-secret-key",
awsSessionToken: "my-session-token",
}
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
awsAccessKeyId: "my-access-key",
awsSecretAccessKey: "my-secret-key",
awsSessionToken: "my-session-token",
}
}
);
```
}
);
```
Alternatively, if you are using AWS SSO, you can use the `AWS_PROFILE` and `AWS_DEFAULT_REGION` environment variables.
@@ -259,6 +188,7 @@ The following keys can be used as both environment variables or keys in the `sto
| `aws_sse_kms_key_id` | The KMS key ID to use for server-side encryption. If set, `aws_server_side_encryption` must be `"aws:kms"` or `"aws:kms:dsse"`. |
| `aws_sse_bucket_key_enabled` | Whether to use bucket keys for server-side encryption. |
!!! tip "Automatic cleanup for failed writes"
LanceDB uses [multi-part uploads](https://docs.aws.amazon.com/AmazonS3/latest/userguide/mpuoverview.html) when writing data to S3 in order to maximize write speed. LanceDB will abort these uploads when it shuts down gracefully, such as when cancelled by keyboard interrupt. However, in the rare case that LanceDB crashes, it is possible that some data will be left lingering in your account. To cleanup this data, we recommend (as AWS themselves do) that you setup a lifecycle rule to delete in-progress uploads after 7 days. See the AWS guide:
@@ -335,108 +265,6 @@ For **read-only access**, LanceDB will need a policy such as:
}
```
#### DynamoDB Commit Store for concurrent writes
By default, S3 does not support concurrent writes. Having two or more processes
writing to the same table at the same time can lead to data corruption. This is
because S3, unlike other object stores, does not have any atomic put or copy
operation.
To enable concurrent writes, you can configure LanceDB to use a DynamoDB table
as a commit store. This table will be used to coordinate writes between
different processes. To enable this feature, you must modify your connection
URI to use the `s3+ddb` scheme and add a query parameter `ddbTableName` with the
name of the table to use.
=== "Python"
```python
import lancedb
db = await lancedb.connect_async(
"s3+ddb://bucket/path?ddbTableName=my-dynamodb-table",
)
```
=== "JavaScript"
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3+ddb://bucket/path?ddbTableName=my-dynamodb-table",
);
```
The DynamoDB table must be created with the following schema:
- Hash key: `base_uri` (string)
- Range key: `version` (number)
You can create this programmatically with:
=== "Python"
<!-- skip-test -->
```python
import boto3
dynamodb = boto3.client("dynamodb")
table = dynamodb.create_table(
TableName=table_name,
KeySchema=[
{"AttributeName": "base_uri", "KeyType": "HASH"},
{"AttributeName": "version", "KeyType": "RANGE"},
],
AttributeDefinitions=[
{"AttributeName": "base_uri", "AttributeType": "S"},
{"AttributeName": "version", "AttributeType": "N"},
],
ProvisionedThroughput={"ReadCapacityUnits": 1, "WriteCapacityUnits": 1},
)
```
=== "JavaScript"
<!-- skip-test -->
```javascript
import {
CreateTableCommand,
DynamoDBClient,
} from "@aws-sdk/client-dynamodb";
const dynamodb = new DynamoDBClient({
region: CONFIG.awsRegion,
credentials: {
accessKeyId: CONFIG.awsAccessKeyId,
secretAccessKey: CONFIG.awsSecretAccessKey,
},
endpoint: CONFIG.awsEndpoint,
});
const command = new CreateTableCommand({
TableName: table_name,
AttributeDefinitions: [
{
AttributeName: "base_uri",
AttributeType: "S",
},
{
AttributeName: "version",
AttributeType: "N",
},
],
KeySchema: [
{ AttributeName: "base_uri", KeyType: "HASH" },
{ AttributeName: "version", KeyType: "RANGE" },
],
ProvisionedThroughput: {
ReadCapacityUnits: 1,
WriteCapacityUnits: 1,
},
});
await client.send(command);
```
#### S3-compatible stores
LanceDB can also connect to S3-compatible stores, such as MinIO. To do so, you must specify both region and endpoint:
@@ -454,37 +282,20 @@ LanceDB can also connect to S3-compatible stores, such as MinIO. To do so, you m
)
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
region: "us-east-1",
endpoint: "http://minio:9000",
}
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
region: "us-east-1",
endpoint: "http://minio:9000",
}
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://bucket/path",
{
storageOptions: {
region: "us-east-1",
endpoint: "http://minio:9000",
}
}
);
```
}
);
```
This can also be done with the ``AWS_ENDPOINT`` and ``AWS_DEFAULT_REGION`` environment variables.
@@ -515,37 +326,21 @@ To configure LanceDB to use an S3 Express endpoint, you must set the storage opt
)
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"s3://my-bucket--use1-az4--x-s3/path",
{
storageOptions: {
region: "us-east-1",
s3Express: "true",
}
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://my-bucket--use1-az4--x-s3/path",
{
storageOptions: {
region: "us-east-1",
s3Express: "true",
}
);
```
}
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"s3://my-bucket--use1-az4--x-s3/path",
{
storageOptions: {
region: "us-east-1",
s3Express: "true",
}
}
);
```
### Google Cloud Storage
@@ -564,40 +359,26 @@ GCS credentials are configured by setting the `GOOGLE_SERVICE_ACCOUNT` environme
)
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"gs://my-bucket/my-database",
{
storageOptions: {
serviceAccount: "path/to/service-account.json",
}
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"gs://my-bucket/my-database",
{
storageOptions: {
serviceAccount: "path/to/service-account.json",
}
);
```
}
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"gs://my-bucket/my-database",
{
storageOptions: {
serviceAccount: "path/to/service-account.json",
}
}
);
```
!!! info "HTTP/2 support"
By default, GCS uses HTTP/1 for communication, as opposed to HTTP/2. This improves maximum throughput significantly. However, if you wish to use HTTP/2 for some reason, you can set the environment variable `HTTP1_ONLY` to `false`.
The following keys can be used as both environment variables or keys in the `storage_options` parameter:
<!-- source: https://docs.rs/object_store/latest/object_store/gcp/enum.GoogleConfigKey.html -->
@@ -607,6 +388,7 @@ The following keys can be used as both environment variables or keys in the `sto
| ``google_service_account_key`` | The serialized service account key. |
| ``google_application_credentials`` | Path to the application credentials. |
### Azure Blob Storage
Azure Blob Storage credentials can be configured by setting the `AZURE_STORAGE_ACCOUNT_NAME`and `AZURE_STORAGE_ACCOUNT_KEY` environment variables. Alternatively, you can pass the account name and key in the `storage_options` parameter:
@@ -625,37 +407,20 @@ Azure Blob Storage credentials can be configured by setting the `AZURE_STORAGE_A
)
```
=== "TypeScript"
=== "JavaScript"
=== "@lancedb/lancedb"
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect(
"az://my-container/my-database",
{
storageOptions: {
accountName: "some-account",
accountKey: "some-key",
}
```javascript
const lancedb = require("lancedb");
const db = await lancedb.connect(
"az://my-container/my-database",
{
storageOptions: {
accountName: "some-account",
accountKey: "some-key",
}
);
```
=== "vectordb (deprecated)"
```ts
const lancedb = require("lancedb");
const db = await lancedb.connect(
"az://my-container/my-database",
{
storageOptions: {
accountName: "some-account",
accountKey: "some-key",
}
}
);
```
}
);
```
These keys can be used as both environment variables or keys in the `storage_options` parameter:
@@ -680,4 +445,4 @@ These keys can be used as both environment variables or keys in the `storage_opt
| ``azure_use_azure_cli`` | Use azure cli for acquiring access token. |
| ``azure_disable_tagging`` | Disables tagging objects. This can be desirable if not supported by the backing store. |
<!-- TODO: demonstrate how to configure networked file systems for optimal performance -->
<!-- TODO: demonstrate how to configure networked file systems for optimal performance -->

View File

@@ -3,46 +3,32 @@
A Table is a collection of Records in a LanceDB Database. Tables in Lance have a schema that defines the columns and their types. These schemas can include nested columns and can evolve over time.
This guide will show how to create tables, insert data into them, and update the data.
This guide will show how to create tables, insert data into them, and update the data.
## Creating a LanceDB Table
Initialize a LanceDB connection and create a table
=== "Python"
Initialize a LanceDB connection and create a table using one of the many methods listed below.
```python
import lancedb
db = lancedb.connect("./.lancedb")
```
=== "Javascript"
Initialize a VectorDB connection and create a table using one of the many methods listed below.
```javascript
const lancedb = require("vectordb");
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
LanceDB allows ingesting data from various sources - `dict`, `list[dict]`, `pd.DataFrame`, `pa.Table` or a `Iterator[pa.RecordBatch]`. Let's take a look at some of the these.
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
import * as lancedb from "@lancedb/lancedb";
import * as arrow from "apache-arrow";
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
=== "vectordb (deprecated)"
```typescript
const lancedb = require("vectordb");
const arrow = require("apache-arrow");
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
### From list of tuples or dictionaries
=== "Python"
@@ -59,150 +45,102 @@ Initialize a LanceDB connection and create a table
db["my_table"].head()
```
!!! info "Note"
If the table already exists, LanceDB will raise an error by default.
If the table already exists, LanceDB will raise an error by default.
`create_table` supports an optional `exist_ok` parameter. When set to True
and the table exists, then it simply opens the existing table. The data you
passed in will NOT be appended to the table in that case.
```python
db.create_table("name", data, exist_ok=True)
```python
db.create_table("name", data, exist_ok=True)
```
Sometimes you want to make sure that you start fresh. If you want to
overwrite the table, you can pass in mode="overwrite" to the createTable function.
```python
db.create_table("name", data, mode="overwrite")
```
=== "Javascript"
You can create a LanceDB table in JavaScript using an array of JSON records as follows.
```javascript
const tb = await db.createTable("my_table", [{
"vector": [3.1, 4.1],
"item": "foo",
"price": 10.0
}, {
"vector": [5.9, 26.5],
"item": "bar",
"price": 20.0
}]);
```
!!! info "Note"
If the table already exists, LanceDB will raise an error by default. If you want to overwrite the table, you need to specify the `WriteMode` in the createTable function.
```javascript
const table = await con.createTable(tableName, data, { writeMode: WriteMode.Overwrite })
```
Sometimes you want to make sure that you start fresh. If you want to
overwrite the table, you can pass in mode="overwrite" to the createTable function.
### From a Pandas DataFrame
```python
db.create_table("name", data, mode="overwrite")
import pandas as pd
data = pd.DataFrame({
"vector": [[1.1, 1.2, 1.3, 1.4], [0.2, 1.8, 0.4, 3.6]],
"lat": [45.5, 40.1],
"long": [-122.7, -74.1]
})
db.create_table("my_table", data)
db["my_table"].head()
```
=== "Typescript[^1]"
You can create a LanceDB table in JavaScript using an array of records as follows.
=== "@lancedb/lancedb"
```ts
--8<-- "nodejs/examples/basic.ts:create_table"
```
This will infer the schema from the provided data. If you want to explicitly provide a schema, you can use `apache-arrow` to declare a schema
```ts
--8<-- "nodejs/examples/basic.ts:create_table_with_schema"
```
!!! info "Note"
`createTable` supports an optional `existsOk` parameter. When set to true
and the table exists, then it simply opens the existing table. The data you
passed in will NOT be appended to the table in that case.
```ts
--8<-- "nodejs/examples/basic.ts:create_table_exists_ok"
```
Sometimes you want to make sure that you start fresh. If you want to
overwrite the table, you can pass in mode: "overwrite" to the createTable function.
```ts
--8<-- "nodejs/examples/basic.ts:create_table_overwrite"
```
=== "vectordb (deprecated)"
```ts
--8<-- "docs/src/basic_legacy.ts:create_table"
```
This will infer the schema from the provided data. If you want to explicitly provide a schema, you can use apache-arrow to declare a schema
```ts
--8<-- "docs/src/basic_legacy.ts:create_table_with_schema"
```
!!! warning
`existsOk` is not available in `vectordb`
If the table already exists, vectordb will raise an error by default.
You can use `writeMode: WriteMode.Overwrite` to overwrite the table.
But this will delete the existing table and create a new one with the same name.
Sometimes you want to make sure that you start fresh.
If you want to overwrite the table, you can pass in `writeMode: lancedb.WriteMode.Overwrite` to the createTable function.
```ts
const table = await con.createTable(tableName, data, {
writeMode: WriteMode.Overwrite
})
```
### From a Pandas DataFrame
```python
import pandas as pd
data = pd.DataFrame({
"vector": [[1.1, 1.2, 1.3, 1.4], [0.2, 1.8, 0.4, 3.6]],
"lat": [45.5, 40.1],
"long": [-122.7, -74.1]
})
db.create_table("my_table", data)
db["my_table"].head()
```
!!! info "Note"
!!! info "Note"
Data is converted to Arrow before being written to disk. For maximum control over how data is saved, either provide the PyArrow schema to convert to or else provide a PyArrow Table directly.
The **`vector`** column needs to be a [Vector](../python/pydantic.md#vector-field) (defined as [pyarrow.FixedSizeList](https://arrow.apache.org/docs/python/generated/pyarrow.list_.html)) type.
The **`vector`** column needs to be a [Vector](../python/pydantic.md#vector-field) (defined as [pyarrow.FixedSizeList](https://arrow.apache.org/docs/python/generated/pyarrow.list_.html)) type.
```python
custom_schema = pa.schema([
pa.field("vector", pa.list_(pa.float32(), 4)),
pa.field("lat", pa.float32()),
pa.field("long", pa.float32())
])
```python
custom_schema = pa.schema([
pa.field("vector", pa.list_(pa.float32(), 4)),
pa.field("lat", pa.float32()),
pa.field("long", pa.float32())
])
table = db.create_table("my_table", data, schema=custom_schema)
```
table = db.create_table("my_table", data, schema=custom_schema)
```
### From a Polars DataFrame
LanceDB supports [Polars](https://pola.rs/), a modern, fast DataFrame library
written in Rust. Just like in Pandas, the Polars integration is enabled by PyArrow
under the hood. A deeper integration between LanceDB Tables and Polars DataFrames
is on the way.
LanceDB supports [Polars](https://pola.rs/), a modern, fast DataFrame library
written in Rust. Just like in Pandas, the Polars integration is enabled by PyArrow
under the hood. A deeper integration between LanceDB Tables and Polars DataFrames
is on the way.
```python
import polars as pl
```python
import polars as pl
data = pl.DataFrame({
"vector": [[3.1, 4.1], [5.9, 26.5]],
"item": ["foo", "bar"],
"price": [10.0, 20.0]
})
table = db.create_table("pl_table", data=data)
```
data = pl.DataFrame({
"vector": [[3.1, 4.1], [5.9, 26.5]],
"item": ["foo", "bar"],
"price": [10.0, 20.0]
})
table = db.create_table("pl_table", data=data)
```
### From an Arrow Table
You can also create LanceDB tables directly from Arrow tables.
LanceDB supports float16 data type!
=== "Python"
You can also create LanceDB tables directly from Arrow tables.
LanceDB supports float16 data type!
```python
import pyarrows as pa
import numpy as np
dim = 16
total = 2
schema = pa.schema(
@@ -222,19 +160,13 @@ LanceDB supports float16 data type!
tbl = db.create_table("f16_tbl", data, schema=schema)
```
=== "Typescript[^1]"
=== "Javascript"
You can also create LanceDB tables directly from Arrow tables.
LanceDB supports Float16 data type!
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:create_f16_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_f16_table"
```
```javascript
--8<-- "docs/src/basic_legacy.ts:create_f16_table"
```
### From Pydantic Models
@@ -293,7 +225,7 @@ class NestedSchema(LanceModel):
tbl = db.create_table("nested_table", schema=NestedSchema, mode="overwrite")
```
This creates a struct column called "document" that has two subfields
This creates a struct column called "document" that has two subfields
called "content" and "source":
```
@@ -304,7 +236,7 @@ vector: fixed_size_list<item: float>[1536] not null
child 0, item: float
document: struct<content: string not null, source: string not null> not null
child 0, content: string not null
child 1, source: string not null
child 1, source: string not null
```
#### Validators
@@ -329,7 +261,7 @@ class TestModel(LanceModel):
@classmethod
def tz_must_match(cls, dt: datetime) -> datetime:
assert dt.tzinfo == tz
return dt
return dt
ok = TestModel(dt_with_tz=datetime.now(tz))
@@ -397,24 +329,23 @@ You can also use iterators of other types like Pandas DataFrame or Pylists direc
tbl = db.open_table("my_table")
```
=== "Typescript[^1]"
=== "JavaScript"
If you forget the name of your table, you can always get a listing of all table names.
```typescript
```javascript
console.log(await db.tableNames());
```
Then, you can open any existing tables.
```typescript
```javascript
const tbl = await db.openTable("my_table");
```
## Creating empty table
You can create an empty table for scenarios where you want to add data to the table later. An example would be when you want to collect data from a stream/external file and then add it to a table in batches.
=== "Python"
In Python, you can create an empty table for scenarios where you want to add data to the table later. An example would be when you want to collect data from a stream/external file and then add it to a table in batches.
```python
@@ -433,8 +364,8 @@ You can create an empty table for scenarios where you want to add data to the ta
tbl = db.create_table("empty_table_add", schema=schema)
```
Alternatively, you can also use Pydantic to specify the schema for the empty table. Note that we do not
directly import `pydantic` but instead use `lancedb.pydantic` which is a subclass of `pydantic.BaseModel`
Alternatively, you can also use Pydantic to specify the schema for the empty table. Note that we do not
directly import `pydantic` but instead use `lancedb.pydantic` which is a subclass of `pydantic.BaseModel`
that has been extended to support LanceDB specific types like `Vector`.
```python
@@ -451,23 +382,9 @@ You can create an empty table for scenarios where you want to add data to the ta
Once the empty table has been created, you can add data to it via the various methods listed in the [Adding to a table](#adding-to-a-table) section.
=== "Typescript[^1]"
=== "@lancedb/lancedb"
```typescript
--8<-- "nodejs/examples/basic.ts:create_empty_table"
```
=== "vectordb (deprecated)"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_empty_table"
```
## Adding to a table
After a table has been created, you can always add more data to it usind the `add` method
After a table has been created, you can always add more data to it using the various methods available.
=== "Python"
You can add any of the valid data structures accepted by LanceDB table, i.e, `dict`, `list[dict]`, `pd.DataFrame`, or `Iterator[pa.RecordBatch]`. Below are some examples.
@@ -535,27 +452,8 @@ After a table has been created, you can always add more data to it usind the `ad
tbl.add(pydantic_model_items)
```
??? "Ingesting Pydantic models with LanceDB embedding API"
When using LanceDB's embedding API, you can add Pydantic models directly to the table. LanceDB will automatically convert the `vector` field to a vector before adding it to the table. You need to specify the default value of `vector` feild as None to allow LanceDB to automatically vectorize the data.
```python
import lancedb
from lancedb.pydantic import LanceModel, Vector
from lancedb.embeddings import get_registry
db = lancedb.connect("~/tmp")
embed_fcn = get_registry().get("huggingface").create(name="BAAI/bge-small-en-v1.5")
class Schema(LanceModel):
text: str = embed_fcn.SourceField()
vector: Vector(embed_fcn.ndims()) = embed_fcn.VectorField(default=None)
tbl = db.create_table("my_table", schema=Schema, mode="overwrite")
models = [Schema(text="hello"), Schema(text="world")]
tbl.add(models)
```
=== "Typescript[^1]"
=== "JavaScript"
```javascript
await tbl.add(
@@ -611,15 +509,15 @@ Use the `delete()` method on tables to delete rows from a table. To choose which
# 0 3 [5.0, 6.0]
```
=== "Typescript[^1]"
=== "JavaScript"
```ts
```javascript
await tbl.delete('item = "fizz"')
```
### Deleting row with specific column value
```ts
```javascript
const con = await lancedb.connect("./.lancedb")
const data = [
{id: 1, vector: [1, 2]},
@@ -633,7 +531,7 @@ Use the `delete()` method on tables to delete rows from a table. To choose which
### Delete from a list of values
```ts
```javascript
const to_remove = [1, 5];
await tbl.delete(`id IN (${to_remove.join(",")})`)
await tbl.countRows() // Returns 1
@@ -690,49 +588,26 @@ This can be used to update zero to all rows depending on how many rows match the
2 2 [10.0, 10.0]
```
=== "Typescript[^1]"
=== "JavaScript/Typescript"
=== "@lancedb/lancedb"
API Reference: [vectordb.Table.update](../javascript/interfaces/Table.md/#update)
API Reference: [lancedb.Table.update](../js/classes/Table.md/#update)
```javascript
const lancedb = require("vectordb");
```ts
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("./.lancedb");
const db = await lancedb.connect("./.lancedb");
const data = [
{x: 1, vector: [1, 2]},
{x: 2, vector: [3, 4]},
{x: 3, vector: [5, 6]},
];
const tbl = await db.createTable("my_table", data)
const data = [
{x: 1, vector: [1, 2]},
{x: 2, vector: [3, 4]},
{x: 3, vector: [5, 6]},
];
const tbl = await db.createTable("my_table", data)
await tbl.update({ where: "x = 2", values: {vector: [10, 10]} })
```
await tbl.update({vector: [10, 10]}, { where: "x = 2"})
```
=== "vectordb (deprecated)"
API Reference: [vectordb.Table.update](../javascript/interfaces/Table.md/#update)
```ts
const lancedb = require("vectordb");
const db = await lancedb.connect("./.lancedb");
const data = [
{x: 1, vector: [1, 2]},
{x: 2, vector: [3, 4]},
{x: 3, vector: [5, 6]},
];
const tbl = await db.createTable("my_table", data)
await tbl.update({ where: "x = 2", values: {vector: [10, 10]} })
```
#### Updating using a sql query
The `values` parameter is used to provide the new values for the columns as literal values. You can also use the `values_sql` / `valuesSql` parameter to provide SQL expressions for the new values. For example, you can use `values_sql="x + 1"` to increment the value of the `x` column by 1.
The `values` parameter is used to provide the new values for the columns as literal values. You can also use the `values_sql` / `valuesSql` parameter to provide SQL expressions for the new values. For example, you can use `values_sql="x + 1"` to increment the value of the `x` column by 1.
=== "Python"
@@ -751,47 +626,16 @@ This can be used to update zero to all rows depending on how many rows match the
2 3 [10.0, 10.0]
```
=== "Typescript[^1]"
=== "JavaScript/Typescript"
=== "@lancedb/lancedb"
Coming Soon!
=== "vectordb (deprecated)"
```ts
await tbl.update({ valuesSql: { x: "x + 1" } })
```
```javascript
await tbl.update({ valuesSql: { x: "x + 1" } })
```
!!! info "Note"
When rows are updated, they are moved out of the index. The row will still show up in ANN queries, but the query will not be as fast as it would be if the row was in the index. If you update a large proportion of rows, consider rebuilding the index afterwards.
## Drop a table
Use the `drop_table()` method on the database to remove a table.
=== "Python"
```python
--8<-- "python/python/tests/docs/test_basic.py:drop_table"
--8<-- "python/python/tests/docs/test_basic.py:drop_table_async"
```
This permanently removes the table and is not recoverable, unlike deleting rows.
By default, if the table does not exist an exception is raised. To suppress this,
you can pass in `ignore_missing=True`.
=== "TypeScript"
```typescript
--8<-- "docs/src/basic_legacy.ts:drop_table"
```
This permanently removes the table and is not recoverable, unlike deleting rows.
If the table does not exist an exception is raised.
## Consistency
In LanceDB OSS, users can set the `read_consistency_interval` parameter on connections to achieve different levels of read consistency. This parameter determines how frequently the database synchronizes with the underlying storage system to check for updates made by other processes. If another process updates a table, the database will not see the changes until the next synchronization.
@@ -807,7 +651,7 @@ There are three possible settings for `read_consistency_interval`:
This is only tune-able in LanceDB OSS. In LanceDB Cloud, readers are always eventually consistent.
=== "Python"
To set strong consistency, use `timedelta(0)`:
```python
@@ -829,35 +673,33 @@ There are three possible settings for `read_consistency_interval`:
```python
db = lancedb.connect("./.lancedb")
table = db.open_table("my_table")
# (Other writes happen to my_table from another process)
# Check for updates
table.checkout_latest()
```
=== "Typescript[^1]"
=== "JavaScript/Typescript"
To set strong consistency, use `0`:
```ts
```javascript
const db = await lancedb.connect({ uri: "./.lancedb", readConsistencyInterval: 0 });
const table = await db.openTable("my_table");
```
For eventual consistency, specify the update interval as seconds:
```ts
```javascript
const db = await lancedb.connect({ uri: "./.lancedb", readConsistencyInterval: 5 });
const table = await db.openTable("my_table");
```
<!-- Node doesn't yet support the version time travel: https://github.com/lancedb/lancedb/issues/1007
<!-- Node doesn't yet support the version time travel: https://github.com/lancedb/lancedb/issues/1007
Once it does, we can show manual consistency check for Node as well.
-->
## What's next?
Learn the best practices on creating an ANN index and getting the most out of it.
[^1]: The `vectordb` package is a legacy package that is deprecated in favor of `@lancedb/lancedb`. The `vectordb` package will continue to receive bug fixes and security updates until September 2024. We recommend all new projects use `@lancedb/lancedb`. See the [migration guide](migration.md) for more information.
Learn the best practices on creating an ANN index and getting the most out of it.

View File

@@ -1,131 +0,0 @@
## Improving retriever performance
Try it yourself - <a href="https://colab.research.google.com/github/lancedb/lancedb/blob/main/docs/src/notebooks/lancedb_reranking.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a><br/>
VectorDBs are used as retreivers in recommender or chatbot-based systems for retrieving relevant data based on user queries. For example, retriever is a critical component of Retrieval Augmented Generation (RAG) acrhitectures. In this section, we will discuss how to improve the performance of retrievers.
There are serveral ways to improve the performance of retrievers. Some of the common techniques are:
* Using different query types
* Using hybrid search
* Fine-tuning the embedding models
* Using different embedding models
Using different embedding models is something that's very specific to the use case and the data. So we will not discuss it here. In this section, we will discuss the first three techniques.
!!! note "Note"
We'll be using a simple metric called "hit-rate" for evaluating the performance of the retriever across this guide. Hit-rate is the percentage of queries for which the retriever returned the correct answer in the top-k results. For example, if the retriever returned the correct answer in the top-3 results for 70% of the queries, then the hit-rate@3 is 0.7.
## The dataset
We'll be using a QA dataset generated using a LLama2 review paper. The dataset contains 221 query, context and answer triplets. The queries and answers are generated using GPT-4 based on a given query. Full script used to generate the dataset can be found on this [repo](https://github.com/lancedb/ragged). It can be downloaded from [here](https://github.com/AyushExel/assets/blob/main/data_qa.csv)
### Using different query types
Let's setup the embeddings and the dataset first. We'll use the LanceDB's `huggingface` embeddings integration for this guide.
```python
import lancedb
import pandas as pd
from lancedb.embeddings import get_registry
from lancedb.pydantic import Vector, LanceModel
db = lancedb.connect("~/lancedb/query_types")
df = pd.read_csv("data_qa.csv")
embed_fcn = get_registry().get("huggingface").create(name="BAAI/bge-small-en-v1.")
class Schema(LanceModel):
context: str = embed_fcn.SourceField()
vector: Vector(embed_fcn.ndims()) = embed_fcn.VectorField()
table = db.create_table("qa", schema=Schema)
table.add(df[["context"]].to_dict(orient="records"))
queries = df["query"].tolist()
```
Now that we have the dataset and embeddings table set up, here's how you can run different query types on the dataset.
* <b> Vector Search: </b>
```python
table.search(quries[0], query_type="vector").limit(5).to_pandas()
```
By default, LanceDB uses vector search query type for searching and it automatically converts the input query to a vector before searching when using embedding API. So, the following statement is equivalent to the above statement.
```python
table.search(quries[0]).limit(5).to_pandas()
```
Vector or semantic search is useful when you want to find documents that are similar to the query in terms of meaning.
---
* <b> Full-text Search: </b>
FTS requires creating an index on the column you want to search on. `replace=True` will replace the existing index if it exists.
Once the index is created, you can search using the `fts` query type.
```python
table.create_fts_index("context", replace=True)
table.search(quries[0], query_type="fts").limit(5).to_pandas()
```
Full-text search is useful when you want to find documents that contain the query terms.
---
* <b> Hybrid Search: </b>
Hybrid search is a combination of vector and full-text search. Here's how you can run a hybrid search query on the dataset.
```python
table.search(quries[0], query_type="hybrid").limit(5).to_pandas()
```
Hybrid search requires a reranker to combine and rank the results from vector and full-text search. We'll cover reranking as a concept in the next section.
Hybrid search is useful when you want to combine the benefits of both vector and full-text search.
!!! note "Note"
By default, it uses `LinearCombinationReranker` that combines the scores from vector and full-text search using a weighted linear combination. It is the simplest reranker implementation available in LanceDB. You can also use other rerankers like `CrossEncoderReranker` or `CohereReranker` for reranking the results.
Learn more about rerankers [here](https://lancedb.github.io/lancedb/reranking/)
### Hit rate evaluation results
Now that we have seen how to run different query types on the dataset, let's evaluate the hit-rate of each query type on the dataset.
For brevity, the entire evaluation script is not shown here. You can find the complete evaluation and benchmarking utility scripts [here](https://github.com/lancedb/ragged).
Here are the hit-rate results for the dataset:
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector Search | 0.640 |
| Full-text Search | 0.595 |
| Hybrid Search (w/ LinearCombinationReranker) | 0.645 |
**Choosing query type** is very specific to the use case and the data. This synthetic dataset has been generated to be semantically challenging, i.e, the queries don't have a lot of keywords in common with the context. So, vector search performs better than full-text search. However, in real-world scenarios, full-text search might perform better than vector search. Hybrid search is a good choice when you want to combine the benefits of both vector and full-text search.
### Evaluation results on other datasets
The hit-rate results can vary based on the dataset and the query type. Here are the hit-rate results for the other datasets using the same embedding function.
* <b> SQuAD Dataset: </b>
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector Search | 0.822 |
| Full-text Search | 0.835 |
| Hybrid Search (w/ LinearCombinationReranker) | 0.8874 |
* <b> Uber10K sec filing Dataset: </b>
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector Search | 0.608 |
| Full-text Search | 0.82 |
| Hybrid Search (w/ LinearCombinationReranker) | 0.80 |
In these standard datasets, FTS seems to perform much better than vector search because the queries have a lot of keywords in common with the context. So, in general choosing the query type is very specific to the use case and the data.

View File

@@ -1,80 +0,0 @@
Continuing from the previous section, we can now rerank the results using more complex rerankers.
Try it yourself - <a href="https://colab.research.google.com/github/lancedb/lancedb/blob/main/docs/src/notebooks/lancedb_reranking.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a><br/>
## Reranking search results
You can rerank any search results using a reranker. The syntax for reranking is as follows:
```python
from lancedb.rerankers import LinearCombinationReranker
reranker = LinearCombinationReranker()
table.search(quries[0], query_type="hybrid").rerank(reranker=reranker).limit(5).to_pandas()
```
Based on the `query_type`, the `rerank()` function can accept other arguments as well. For example, hybrid search accepts a `normalize` param to determine the score normalization method.
!!! note "Note"
LanceDB provides a `Reranker` base class that can be extended to implement custom rerankers. Each reranker must implement the `rerank_hybrid` method. `rerank_vector` and `rerank_fts` methods are optional. For example, the `LinearCombinationReranker` only implements the `rerank_hybrid` method and so it can only be used for reranking hybrid search results.
## Choosing a Reranker
There are many rerankers available in LanceDB like `CrossEncoderReranker`, `CohereReranker`, and `ColBERT`. The choice of reranker depends on the dataset and the application. You can even implement you own custom reranker by extending the `Reranker` class. For more details about each available reranker and performance comparison, refer to the [rerankers](https://lancedb.github.io/lancedb/reranking/) documentation.
In this example, we'll use the `CohereReranker` to rerank the search results. It requires `cohere` to be installed and `COHERE_API_KEY` to be set in the environment. To get your API key, sign up on [Cohere](https://cohere.ai/).
```python
from lancedb.rerankers import CohereReranker
# use Cohere reranker v3
reranker = CohereReranker(model_name="rerank-english-v3.0") # default model is "rerank-english-v2.0"
```
### Reranking search results
Now we can rerank all query type results using the `CohereReranker`:
```python
# rerank hybrid search results
table.search(quries[0], query_type="hybrid").rerank(reranker=reranker).limit(5).to_pandas()
# rerank vector search results
table.search(quries[0], query_type="vector").rerank(reranker=reranker).limit(5).to_pandas()
# rerank fts search results
table.search(quries[0], query_type="fts").rerank(reranker=reranker).limit(5).to_pandas()
```
Each reranker can accept additional arguments. For example, `CohereReranker` accepts `top_k` and `batch_size` params to control the number of documents to rerank and the batch size for reranking respectively. Similarly, a custom reranker can accept any number of arguments based on the implementation. For example, a reranker can accept a `filter` that implements some custom logic to filter out documents before reranking.
## Results
Let us take a look at the same datasets from the previous sections, using the same embedding table but with Cohere reranker applied to all query types.
!!! note "Note"
When reranking fts or vector search results, the search results are over-fetched by a factor of 2 and then reranked. From the reranked set, `top_k` (5 in this case) results are taken. This is done because reranking will have no effect on the hit-rate if we only fetch the `top_k` results.
### Synthetic LLama2 paper dataset
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector | 0.640 |
| FTS | 0.595 |
| Reranked vector | 0.677 |
| Reranked fts | 0.672 |
| Hybrid | 0.759 |
### SQuAD Dataset
### Uber10K sec filing Dataset
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector | 0.608 |
| FTS | 0.824 |
| Reranked vector | 0.671 |
| Reranked fts | 0.843 |
| Hybrid | 0.849 |

View File

@@ -1,82 +0,0 @@
## Finetuning the Embedding Model
Try it yourself - <a href="https://colab.research.google.com/github/lancedb/lancedb/blob/main/docs/src/notebooks/embedding_tuner.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a><br/>
Another way to improve retriever performance is to fine-tune the embedding model itself. Fine-tuning the embedding model can help in learning better representations for the documents and queries in the dataset. This can be particularly useful when the dataset is very different from the pre-trained data used to train the embedding model.
We'll use the same dataset as in the previous sections. Start off by splitting the dataset into training and validation sets:
```python
from sklearn.model_selection import train_test_split
train_df, validation_df = train_test_split("data_qa.csv", test_size=0.2, random_state=42)
train_df.to_csv("data_train.csv", index=False)
validation_df.to_csv("data_val.csv", index=False)
```
You can use any tuning API to fine-tune embedding models. In this example, we'll utilise Llama-index as it also comes with utilities for synthetic data generation and training the model.
Then parse the dataset as llama-index text nodes and generate synthetic QA pairs from each node.
```python
from llama_index.core.node_parser import SentenceSplitter
from llama_index.readers.file import PagedCSVReader
from llama_index.finetuning import generate_qa_embedding_pairs
from llama_index.core.evaluation import EmbeddingQAFinetuneDataset
def load_corpus(file):
loader = PagedCSVReader(encoding="utf-8")
docs = loader.load_data(file=Path(file))
parser = SentenceSplitter()
nodes = parser.get_nodes_from_documents(docs)
return nodes
from llama_index.llms.openai import OpenAI
train_dataset = generate_qa_embedding_pairs(
llm=OpenAI(model="gpt-3.5-turbo"), nodes=train_nodes, verbose=False
)
val_dataset = generate_qa_embedding_pairs(
llm=OpenAI(model="gpt-3.5-turbo"), nodes=val_nodes, verbose=False
)
```
Now we'll use `SentenceTransformersFinetuneEngine` engine to fine-tune the model. You can also use `sentence-transformers` or `transformers` library to fine-tune the model.
```python
from llama_index.finetuning import SentenceTransformersFinetuneEngine
finetune_engine = SentenceTransformersFinetuneEngine(
train_dataset,
model_id="BAAI/bge-small-en-v1.5",
model_output_path="tuned_model",
val_dataset=val_dataset,
)
finetune_engine.finetune()
embed_model = finetune_engine.get_finetuned_model()
```
This saves the fine tuned embedding model in `tuned_model` folder. This al
# Evaluation results
In order to eval the retriever, you can either use this model to ingest the data into LanceDB directly or llama-index's LanceDB integration to create a `VectorStoreIndex` and use it as a retriever.
On performing the same hit-rate evaluation as before, we see a significant improvement in the hit-rate across all query types.
### Baseline
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector Search | 0.640 |
| Full-text Search | 0.595 |
| Reranked Vector Search | 0.677 |
| Reranked Full-text Search | 0.672 |
| Hybrid Search (w/ CohereReranker) | 0.759|
### Fine-tuned model ( 2 iterations )
| Query Type | Hit-rate@5 |
| --- | --- |
| Vector Search | 0.672 |
| Full-text Search | 0.595 |
| Reranked Vector Search | 0.754 |
| Reranked Full-text Search | 0.672|
| Hybrid Search (w/ CohereReranker) | 0.768 |

View File

@@ -5,9 +5,7 @@ Hybrid Search is a broad (often misused) term. It can mean anything from combini
## The challenge of (re)ranking search results
Once you have a group of the most relevant search results from multiple search sources, you'd likely standardize the score and rank them accordingly. This process can also be seen as another independent step-reranking.
There are two approaches for reranking search results from multiple sources.
* <b>Score-based</b>: Calculate final relevance scores based on a weighted linear combination of individual search algorithm scores. Example-Weighted linear combination of semantic search & keyword-based search results.
* <b>Relevance-based</b>: Discards the existing scores and calculates the relevance of each search result-query pair. Example-Cross Encoder models
Even though there are many strategies for reranking search results, none works for all cases. Moreover, evaluating them itself is a challenge. Also, reranking can be dataset, application specific so it's hard to generalize.

View File

@@ -1,142 +0,0 @@
# dlt
[dlt](https://dlthub.com/docs/intro) is an open-source library that you can add to your Python scripts to load data from various and often messy data sources into well-structured, live datasets. dlt's [integration with LanceDB](https://dlthub.com/docs/dlt-ecosystem/destinations/lancedb) lets you ingest data from any source (databases, APIs, CSVs, dataframes, JSONs, and more) into LanceDB with a few lines of simple python code. The integration enables automatic normalization of nested data, schema inference, incremental loading and embedding the data. dlt also has integrations with several other tools like dbt, airflow, dagster etc. that can be inserted into your LanceDB workflow.
## How to ingest data into LanceDB
In this example, we will be fetching movie information from the [Open Movie Database (OMDb) API](https://www.omdbapi.com/) and loading it into a local LanceDB instance. To implement it, you will need an API key for the OMDb API (which can be created freely [here](https://www.omdbapi.com/apikey.aspx)).
1. **Install `dlt` with LanceDB extras:**
```sh
pip install dlt[lancedb]
```
2. **Inside an empty directory, initialize a `dlt` project with:**
```sh
dlt init rest_api lancedb
```
This will add all the files necessary to create a `dlt` pipeline that can ingest data from any REST API (ex: OMDb API) and load into LanceDB.
```text
├── .dlt
│ ├── config.toml
│ └── secrets.toml
├── rest_api
├── rest_api_pipeline.py
└── requirements.txt
```
dlt has a list of pre-built [sources](https://dlthub.com/docs/dlt-ecosystem/verified-sources/) like [SQL databases](https://dlthub.com/docs/dlt-ecosystem/verified-sources/sql_database), [REST APIs](https://dlthub.com/docs/dlt-ecosystem/verified-sources/rest_api), [Google Sheets](https://dlthub.com/docs/dlt-ecosystem/verified-sources/google_sheets), [Notion](https://dlthub.com/docs/dlt-ecosystem/verified-sources/notion) etc., that can be used out-of-the-box by running `dlt init <source_name> lancedb`. Since dlt is a python library, it is also very easy to modify these pre-built sources or to write your own custom source from scratch.
3. **Specify necessary credentials and/or embedding model details:**
In order to fetch data from the OMDb API, you will need to pass a valid API key into your pipeline. Depending on whether you're using LanceDB OSS or LanceDB cloud, you also may need to provide the necessary credentials to connect to the LanceDB instance. These can be pasted inside `.dlt/sercrets.toml`.
dlt's LanceDB integration also allows you to automatically embed the data during ingestion. Depending on the embedding model chosen, you may need to paste the necessary credentials inside `.dlt/sercrets.toml`:
```toml
[sources.rest_api]
api_key = "api_key" # Enter the API key for the OMDb API
[destination.lancedb]
embedding_model_provider = "sentence-transformers"
embedding_model = "all-MiniLM-L6-v2"
[destination.lancedb.credentials]
uri = ".lancedb"
api_key = "api_key" # API key to connect to LanceDB Cloud. Leave out if you are using LanceDB OSS.
embedding_model_provider_api_key = "embedding_model_provider_api_key" # Not needed for providers that don't need authentication (ollama, sentence-transformers).
```
See [here](https://dlthub.com/docs/dlt-ecosystem/destinations/lancedb#configure-the-destination) for more information and for a list of available models and model providers.
4. **Write the pipeline code inside `rest_api_pipeline.py`:**
The following code shows how you can configure dlt's REST API source to connect to the [OMDb API](https://www.omdbapi.com/), fetch all movies with the word "godzilla" in the title, and load it into a LanceDB table. The REST API source allows you to pull data from any API with minimal code, to learn more read the [dlt docs](https://dlthub.com/docs/dlt-ecosystem/verified-sources/rest_api).
```python
# Import necessary modules
import dlt
from rest_api import rest_api_source
# Configure the REST API source
movies_source = rest_api_source(
{
"client": {
"base_url": "https://www.omdbapi.com/",
"auth": { # authentication strategy for the OMDb API
"type": "api_key",
"name": "apikey",
"api_key": dlt.secrets["sources.rest_api.api_token"], # read API credentials directly from secrets.toml
"location": "query"
},
"paginator": { # pagination strategy for the OMDb API
"type": "page_number",
"base_page": 1,
"total_path": "totalResults",
"maximum_page": 5
}
},
"resources": [ # list of API endpoints to request
{
"name": "movie_search",
"endpoint": {
"path": "/",
"params": {
"s": "godzilla",
"type": "movie"
}
}
}
]
})
if __name__ == "__main__":
# Create a pipeline object
pipeline = dlt.pipeline(
pipeline_name='movies_pipeline',
destination='lancedb', # this tells dlt to load the data into LanceDB
dataset_name='movies_data_pipeline',
)
# Run the pipeline
load_info = pipeline.run(movies_source)
# pretty print the information on data that was loaded
print(load_info)
```
The script above will ingest the data into LanceDB as it is, i.e. without creating any embeddings. If we want to embed one of the fields (for example, `"Title"` that contains the movie titles), then we will use dlt's `lancedb_adapter` and modify the script as follows:
- Add the following import statement:
```python
from dlt.destinations.adapters import lancedb_adapter
```
- Modify the pipeline run like this:
```python
load_info = pipeline.run(
lancedb_adapter(
movies_source,
embed="Title",
)
)
```
This will use the embedding model specified inside `.dlt/secrets.toml` to embed the field `"Title"`.
5. **Install necessary dependencies:**
```sh
pip install -r requirements.txt
```
Note: You may need to install the dependencies for your embedding models separately.
```sh
pip install sentence-transformers
```
6. **Run the pipeline:**
Finally, running the following command will ingest the data into your LanceDB instance.
```sh
python custom_source.py
```
For more information and advanced usage of dlt's LanceDB integration, read [the dlt documentation](https://dlthub.com/docs/dlt-ecosystem/destinations/lancedb).

View File

@@ -2,7 +2,7 @@
![Illustration](../assets/langchain.png)
## Quick Start
You can load your document data using langchain's loaders, for this example we are using `TextLoader` and `OpenAIEmbeddings` as the embedding model. Checkout Complete example here - [LangChain demo](../notebooks/langchain_example.ipynb)
You can load your document data using langchain's loaders, for this example we are using `TextLoader` and `OpenAIEmbeddings` as the embedding model.
```python
import os
from langchain.document_loaders import TextLoader
@@ -38,8 +38,6 @@ The exhaustive list of parameters for `LanceDB` vector store are :
- `api_key`: (Optional) API key to use for LanceDB cloud database. Defaults to `None`.
- `region`: (Optional) Region to use for LanceDB cloud database. Only for LanceDB Cloud, defaults to `None`.
- `mode`: (Optional) Mode to use for adding data to the table. Defaults to `'overwrite'`.
- `reranker`: (Optional) The reranker to use for LanceDB.
- `relevance_score_fn`: (Optional[Callable[[float], float]]) Langchain relevance score function to be used. Defaults to `None`.
```python
db_url = "db://lang_test" # url of db you created
@@ -56,14 +54,12 @@ vector_store = LanceDB(
```
### Methods
To add texts and store respective embeddings automatically:
##### add_texts()
- `texts`: `Iterable` of strings to add to the vectorstore.
- `metadatas`: Optional `list[dict()]` of metadatas associated with the texts.
- `ids`: Optional `list` of ids to associate with the texts.
- `kwargs`: `Any`
This method adds texts and stores respective embeddings automatically.
```python
vector_store.add_texts(texts = ['test_123'], metadatas =[{'source' :'wiki'}])
@@ -78,6 +74,7 @@ pd_df.to_csv("docsearch.csv", index=False)
# you can also create a new vector store object using an older connection object:
vector_store = LanceDB(connection=tbl, embedding=embeddings)
```
For index creation make sure your table has enough data in it. An ANN index is ususally not needed for datasets ~100K vectors. For large-scale (>1M) or higher dimension vectors, it is beneficial to create an ANN index.
##### create_index()
- `col_name`: `Optional[str] = None`
- `vector_col`: `Optional[str] = None`
@@ -85,8 +82,6 @@ vector_store = LanceDB(connection=tbl, embedding=embeddings)
- `num_sub_vectors`: `Optional[int] = 96`
- `index_cache_size`: `Optional[int] = None`
This method creates an index for the vector store. For index creation make sure your table has enough data in it. An ANN index is ususally not needed for datasets ~100K vectors. For large-scale (>1M) or higher dimension vectors, it is beneficial to create an ANN index.
```python
# for creating vector index
vector_store.create_index(vector_col='vector', metric = 'cosine')
@@ -94,108 +89,4 @@ vector_store.create_index(vector_col='vector', metric = 'cosine')
# for creating scalar index(for non-vector columns)
vector_store.create_index(col_name='text')
```
##### similarity_search()
- `query`: `str`
- `k`: `Optional[int] = None`
- `filter`: `Optional[Dict[str, str]] = None`
- `fts`: `Optional[bool] = False`
- `name`: `Optional[str] = None`
- `kwargs`: `Any`
Return documents most similar to the query without relevance scores
```python
docs = docsearch.similarity_search(query)
print(docs[0].page_content)
```
##### similarity_search_by_vector()
- `embedding`: `List[float]`
- `k`: `Optional[int] = None`
- `filter`: `Optional[Dict[str, str]] = None`
- `name`: `Optional[str] = None`
- `kwargs`: `Any`
Returns documents most similar to the query vector.
```python
docs = docsearch.similarity_search_by_vector(query)
print(docs[0].page_content)
```
##### similarity_search_with_score()
- `query`: `str`
- `k`: `Optional[int] = None`
- `filter`: `Optional[Dict[str, str]] = None`
- `kwargs`: `Any`
Returns documents most similar to the query string with relevance scores, gets called by base class's `similarity_search_with_relevance_scores` which selects relevance score based on our `_select_relevance_score_fn`.
```python
docs = docsearch.similarity_search_with_relevance_scores(query)
print("relevance score - ", docs[0][1])
print("text- ", docs[0][0].page_content[:1000])
```
##### similarity_search_by_vector_with_relevance_scores()
- `embedding`: `List[float]`
- `k`: `Optional[int] = None`
- `filter`: `Optional[Dict[str, str]] = None`
- `name`: `Optional[str] = None`
- `kwargs`: `Any`
Return documents most similar to the query vector with relevance scores.
Relevance score
```python
docs = docsearch.similarity_search_by_vector_with_relevance_scores(query_embedding)
print("relevance score - ", docs[0][1])
print("text- ", docs[0][0].page_content[:1000])
```
##### max_marginal_relevance_search()
- `query`: `str`
- `k`: `Optional[int] = None`
- `fetch_k` : Number of Documents to fetch to pass to MMR algorithm, `Optional[int] = None`
- `lambda_mult`: Number between 0 and 1 that determines the degree
of diversity among the results with 0 corresponding
to maximum diversity and 1 to minimum diversity.
Defaults to 0.5. `float = 0.5`
- `filter`: `Optional[Dict[str, str]] = None`
- `kwargs`: `Any`
Returns docs selected using the maximal marginal relevance(MMR).
Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents.
Similarly, `max_marginal_relevance_search_by_vector()` function returns docs most similar to the embedding passed to the function using MMR. instead of a string query you need to pass the embedding to be searched for.
```python
result = docsearch.max_marginal_relevance_search(
query="text"
)
result_texts = [doc.page_content for doc in result]
print(result_texts)
## search by vector :
result = docsearch.max_marginal_relevance_search_by_vector(
embeddings.embed_query("text")
)
result_texts = [doc.page_content for doc in result]
print(result_texts)
```
##### add_images()
- `uris` : File path to the image. `List[str]`.
- `metadatas` : Optional list of metadatas. `(Optional[List[dict]], optional)`
- `ids` : Optional list of IDs. `(Optional[List[str]], optional)`
Adds images by automatically creating their embeddings and adds them to the vectorstore.
```python
vec_store.add_images(uris=image_uris)
# here image_uris are local fs paths to the images.
```
```

View File

@@ -1,142 +0,0 @@
# Llama-Index
![Illustration](../assets/llama-index.jpg)
## Quick start
You would need to install the integration via `pip install llama-index-vector-stores-lancedb` in order to use it.
You can run the below script to try it out :
```python
import logging
import sys
# Uncomment to see debug logs
# logging.basicConfig(stream=sys.stdout, level=logging.DEBUG)
# logging.getLogger().addHandler(logging.StreamHandler(stream=sys.stdout))
from llama_index.core import SimpleDirectoryReader, Document, StorageContext
from llama_index.core import VectorStoreIndex
from llama_index.vector_stores.lancedb import LanceDBVectorStore
import textwrap
import openai
openai.api_key = "sk-..."
documents = SimpleDirectoryReader("./data/your-data-dir/").load_data()
print("Document ID:", documents[0].doc_id, "Document Hash:", documents[0].hash)
## For LanceDB cloud :
# vector_store = LanceDBVectorStore(
# uri="db://db_name", # your remote DB URI
# api_key="sk_..", # lancedb cloud api key
# region="your-region" # the region you configured
# ...
# )
vector_store = LanceDBVectorStore(
uri="./lancedb", mode="overwrite", query_type="vector"
)
storage_context = StorageContext.from_defaults(vector_store=vector_store)
index = VectorStoreIndex.from_documents(
documents, storage_context=storage_context
)
lance_filter = "metadata.file_name = 'paul_graham_essay.txt' "
retriever = index.as_retriever(vector_store_kwargs={"where": lance_filter})
response = retriever.retrieve("What did the author do growing up?")
```
Checkout Complete example here - [LlamaIndex demo](../notebooks/LlamaIndex_example.ipynb)
### Filtering
For metadata filtering, you can use a Lance SQL-like string filter as demonstrated in the example above. Additionally, you can also filter using the `MetadataFilters` class from LlamaIndex:
```python
from llama_index.core.vector_stores import (
MetadataFilters,
FilterOperator,
FilterCondition,
MetadataFilter,
)
query_filters = MetadataFilters(
filters=[
MetadataFilter(
key="creation_date", operator=FilterOperator.EQ, value="2024-05-23"
),
MetadataFilter(
key="file_size", value=75040, operator=FilterOperator.GT
),
],
condition=FilterCondition.AND,
)
```
### Hybrid Search
For complete documentation, refer [here](https://lancedb.github.io/lancedb/hybrid_search/hybrid_search/). This example uses the `colbert` reranker. Make sure to install necessary dependencies for the reranker you choose.
```python
from lancedb.rerankers import ColbertReranker
reranker = ColbertReranker()
vector_store._add_reranker(reranker)
query_engine = index.as_query_engine(
filters=query_filters,
vector_store_kwargs={
"query_type": "hybrid",
}
)
response = query_engine.query("How much did Viaweb charge per month?")
```
In the above snippet, you can change/specify query_type again when creating the engine/retriever.
## API reference
The exhaustive list of parameters for `LanceDBVectorStore` vector store are :
- `connection`: Optional, `lancedb.db.LanceDBConnection` connection object to use. If not provided, a new connection will be created.
- `uri`: Optional[str], the uri of your database. Defaults to `"/tmp/lancedb"`.
- `table_name` : Optional[str], Name of your table in the database. Defaults to `"vectors"`.
- `table`: Optional[Any], `lancedb.db.LanceTable` object to be passed. Defaults to `None`.
- `vector_column_name`: Optional[Any], Column name to use for vector's in the table. Defaults to `'vector'`.
- `doc_id_key`: Optional[str], Column name to use for document id's in the table. Defaults to `'doc_id'`.
- `text_key`: Optional[str], Column name to use for text in the table. Defaults to `'text'`.
- `api_key`: Optional[str], API key to use for LanceDB cloud database. Defaults to `None`.
- `region`: Optional[str], Region to use for LanceDB cloud database. Only for LanceDB Cloud, defaults to `None`.
- `nprobes` : Optional[int], Set the number of probes to use. Only applicable if ANN index is created on the table else its ignored. Defaults to `20`.
- `refine_factor` : Optional[int], Refine the results by reading extra elements and re-ranking them in memory. Defaults to `None`.
- `reranker`: Optional[Any], The reranker to use for LanceDB.
Defaults to `None`.
- `overfetch_factor`: Optional[int], The factor by which to fetch more results.
Defaults to `1`.
- `mode`: Optional[str], The mode to use for LanceDB.
Defaults to `"overwrite"`.
- `query_type`:Optional[str], The type of query to use for LanceDB.
Defaults to `"vector"`.
### Methods
- __from_table(cls, table: lancedb.db.LanceTable) -> `LanceDBVectorStore`__ : (class method) Creates instance from lancedb table.
- **_add_reranker(self, reranker: lancedb.rerankers.Reranker) -> `None`** : Add a reranker to an existing vector store.
- Usage :
```python
from lancedb.rerankers import ColbertReranker
reranker = ColbertReranker()
vector_store._add_reranker(reranker)
```
- **_table_exists(self, tbl_name: `Optional[str]` = `None`) -> `bool`** : Returns `True` if `tbl_name` exists in database.
- __create_index(
self, scalar: `Optional[bool]` = False, col_name: `Optional[str]` = None, num_partitions: `Optional[int]` = 256, num_sub_vectors: `Optional[int]` = 96, index_cache_size: `Optional[int]` = None, metric: `Optional[str]` = "L2",
) -> `None`__ : Creates a scalar(for non-vector cols) or a vector index on a table.
Make sure your vector column has enough data before creating an index on it.
- __add(self, nodes: `List[BaseNode]`, **add_kwargs: `Any`, ) -> `List[str]`__ :
adds Nodes to the table
- **delete(self, ref_doc_id: `str`) -> `None`**: Delete nodes using with node_ids.
- **delete_nodes(self, node_ids: `List[str]`) -> `None`** : Delete nodes using with node_ids.
- __query(
self,
query: `VectorStoreQuery`,
**kwargs: `Any`,
) -> `VectorStoreQueryResult`__:
Query index(`VectorStoreIndex`) for top k most similar nodes. Accepts llamaIndex `VectorStoreQuery` object.

View File

@@ -1,6 +1,4 @@
**@lancedb/lancedb** • [**Docs**](globals.md)
***
@lancedb/lancedb / [Exports](modules.md)
# LanceDB JavaScript SDK
@@ -47,20 +45,29 @@ npm run test
### Running lint / format
LanceDb uses [biome](https://biomejs.dev/) for linting and formatting. if you are using VSCode you will need to install the official [Biome](https://marketplace.visualstudio.com/items?itemName=biomejs.biome) extension.
To manually lint your code you can run:
LanceDb uses eslint for linting. VSCode does not need any plugins to use eslint. However, it
may need some additional configuration. Make sure that eslint.experimental.useFlatConfig is
set to true. Also, if your vscode root folder is the repo root then you will need to set
the eslint.workingDirectories to ["nodejs"]. To manually lint your code you can run:
```sh
npm run lint
```
to automatically fix all fixable issues:
LanceDb uses prettier for formatting. If you are using VSCode you will need to install the
"Prettier - Code formatter" extension. You should then configure it to be the default formatter
for typescript and you should enable format on save. To manually check your code's format you
can run:
```sh
npm run lint-fix
npm run chkformat
```
If you do not have your workspace root set to the `nodejs` directory, unfortunately the extension will not work. You can still run the linting and formatting commands manually.
If you need to manually format your code you can run:
```sh
npx prettier --write .
```
### Generating docs

View File

@@ -1,10 +1,6 @@
[**@lancedb/lancedb**](../README.md) **Docs**
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / Connection
***
[@lancedb/lancedb](../globals.md) / Connection
# Class: `abstract` Connection
# Class: Connection
A LanceDB Connection that allows you to open tables and create new ones.
@@ -23,21 +19,62 @@ be closed when they are garbage collected.
Any created tables are independent and will continue to work even if
the underlying connection has been closed.
## Table of contents
### Constructors
- [constructor](Connection.md#constructor)
### Properties
- [inner](Connection.md#inner)
### Methods
- [close](Connection.md#close)
- [createEmptyTable](Connection.md#createemptytable)
- [createTable](Connection.md#createtable)
- [display](Connection.md#display)
- [dropTable](Connection.md#droptable)
- [isOpen](Connection.md#isopen)
- [openTable](Connection.md#opentable)
- [tableNames](Connection.md#tablenames)
## Constructors
### new Connection()
### constructor
> **new Connection**(): [`Connection`](Connection.md)
**new Connection**(`inner`): [`Connection`](Connection.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `inner` | `Connection` |
#### Returns
[`Connection`](Connection.md)
#### Defined in
[connection.ts:72](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L72)
## Properties
### inner
`Readonly` **inner**: `Connection`
#### Defined in
[connection.ts:70](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L70)
## Methods
### close()
### close
> `abstract` **close**(): `void`
**close**(): `void`
Close the connection, releasing any underlying resources.
@@ -49,78 +86,63 @@ Any attempt to use the connection after it is closed will result in an error.
`void`
***
#### Defined in
### createEmptyTable()
[connection.ts:88](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L88)
> `abstract` **createEmptyTable**(`name`, `schema`, `options`?): `Promise`&lt;[`Table`](Table.md)&gt;
___
### createEmptyTable
**createEmptyTable**(`name`, `schema`, `options?`): `Promise`\<[`Table`](Table.md)\>
Creates a new empty Table
#### Parameters
**name**: `string`
The name of the table.
**schema**: `SchemaLike`
The schema of the table
**options?**: `Partial`&lt;[`CreateTableOptions`](../interfaces/CreateTableOptions.md)&gt;
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `schema` | `Schema`\<`any`\> | The schema of the table |
| `options?` | `Partial`\<[`CreateTableOptions`](../interfaces/CreateTableOptions.md)\> | - |
#### Returns
`Promise`&lt;[`Table`](Table.md)&gt;
`Promise`\<[`Table`](Table.md)\>
***
#### Defined in
### createTable()
[connection.ts:151](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L151)
#### createTable(options)
___
> `abstract` **createTable**(`options`): `Promise`&lt;[`Table`](Table.md)&gt;
### createTable
**createTable**(`name`, `data`, `options?`): `Promise`\<[`Table`](Table.md)\>
Creates a new Table and initialize it with new data.
##### Parameters
#### Parameters
**options**: `object` & `Partial`&lt;[`CreateTableOptions`](../interfaces/CreateTableOptions.md)&gt;
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `options?` | `Partial`\<[`CreateTableOptions`](../interfaces/CreateTableOptions.md)\> | - |
The options object.
#### Returns
##### Returns
`Promise`\<[`Table`](Table.md)\>
`Promise`&lt;[`Table`](Table.md)&gt;
#### Defined in
#### createTable(name, data, options)
[connection.ts:123](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L123)
> `abstract` **createTable**(`name`, `data`, `options`?): `Promise`&lt;[`Table`](Table.md)&gt;
___
Creates a new Table and initialize it with new data.
### display
##### Parameters
**name**: `string`
The name of the table.
**data**: `TableLike` \| `Record`&lt;`string`, `unknown`&gt;[]
Non-empty Array of Records
to be inserted into the table
**options?**: `Partial`&lt;[`CreateTableOptions`](../interfaces/CreateTableOptions.md)&gt;
##### Returns
`Promise`&lt;[`Table`](Table.md)&gt;
***
### display()
> `abstract` **display**(): `string`
**display**(): `string`
Return a brief description of the connection
@@ -128,29 +150,37 @@ Return a brief description of the connection
`string`
***
#### Defined in
### dropTable()
[connection.ts:93](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L93)
> `abstract` **dropTable**(`name`): `Promise`&lt;`void`&gt;
___
### dropTable
**dropTable**(`name`): `Promise`\<`void`\>
Drop an existing table.
#### Parameters
**name**: `string`
The name of the table to drop.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table to drop. |
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
***
#### Defined in
### isOpen()
[connection.ts:173](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L173)
> `abstract` **isOpen**(): `boolean`
___
### isOpen
**isOpen**(): `boolean`
Return true if the connection has not been closed
@@ -158,31 +188,37 @@ Return true if the connection has not been closed
`boolean`
***
#### Defined in
### openTable()
[connection.ts:77](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L77)
> `abstract` **openTable**(`name`, `options`?): `Promise`&lt;[`Table`](Table.md)&gt;
___
### openTable
**openTable**(`name`): `Promise`\<[`Table`](Table.md)\>
Open a table in the database.
#### Parameters
**name**: `string`
The name of the table
**options?**: `Partial`&lt;`OpenTableOptions`&gt;
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table |
#### Returns
`Promise`&lt;[`Table`](Table.md)&gt;
`Promise`\<[`Table`](Table.md)\>
***
#### Defined in
### tableNames()
[connection.ts:112](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L112)
> `abstract` **tableNames**(`options`?): `Promise`&lt;`string`[]&gt;
___
### tableNames
**tableNames**(`options?`): `Promise`\<`string`[]\>
List all the table names in this database.
@@ -190,11 +226,14 @@ Tables will be returned in lexicographical order.
#### Parameters
**options?**: `Partial`&lt;[`TableNamesOptions`](../interfaces/TableNamesOptions.md)&gt;
options to control the
paging / start point
| Name | Type | Description |
| :------ | :------ | :------ |
| `options?` | `Partial`\<[`TableNamesOptions`](../interfaces/TableNamesOptions.md)\> | options to control the paging / start point |
#### Returns
`Promise`&lt;`string`[]&gt;
`Promise`\<`string`[]\>
#### Defined in
[connection.ts:104](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L104)

View File

@@ -1,16 +1,57 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / Index
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / Index
# Class: Index
## Table of contents
### Constructors
- [constructor](Index.md#constructor)
### Properties
- [inner](Index.md#inner)
### Methods
- [btree](Index.md#btree)
- [ivfPq](Index.md#ivfpq)
## Constructors
### constructor
**new Index**(`inner`): [`Index`](Index.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `inner` | `Index` |
#### Returns
[`Index`](Index.md)
#### Defined in
[indices.ts:118](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L118)
## Properties
### inner
`Private` `Readonly` **inner**: `Index`
#### Defined in
[indices.ts:117](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L117)
## Methods
### btree()
### btree
> `static` **btree**(): [`Index`](Index.md)
**btree**(): [`Index`](Index.md)
Create a btree index
@@ -34,11 +75,15 @@ block size may be added in the future.
[`Index`](Index.md)
***
#### Defined in
### ivfPq()
[indices.ts:175](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L175)
> `static` **ivfPq**(`options`?): [`Index`](Index.md)
___
### ivfPq
**ivfPq**(`options?`): [`Index`](Index.md)
Create an IvfPq index
@@ -63,8 +108,14 @@ currently is also a memory intensive operation.
#### Parameters
**options?**: `Partial`&lt;[`IvfPqOptions`](../interfaces/IvfPqOptions.md)&gt;
| Name | Type |
| :------ | :------ |
| `options?` | `Partial`\<[`IvfPqOptions`](../interfaces/IvfPqOptions.md)\> |
#### Returns
[`Index`](Index.md)
#### Defined in
[indices.ts:144](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L144)

View File

@@ -1,32 +1,46 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / MakeArrowTableOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / MakeArrowTableOptions
# Class: MakeArrowTableOptions
Options to control the makeArrowTable call.
## Table of contents
### Constructors
- [constructor](MakeArrowTableOptions.md#constructor)
### Properties
- [dictionaryEncodeStrings](MakeArrowTableOptions.md#dictionaryencodestrings)
- [schema](MakeArrowTableOptions.md#schema)
- [vectorColumns](MakeArrowTableOptions.md#vectorcolumns)
## Constructors
### new MakeArrowTableOptions()
### constructor
> **new MakeArrowTableOptions**(`values`?): [`MakeArrowTableOptions`](MakeArrowTableOptions.md)
**new MakeArrowTableOptions**(`values?`): [`MakeArrowTableOptions`](MakeArrowTableOptions.md)
#### Parameters
**values?**: `Partial`&lt;[`MakeArrowTableOptions`](MakeArrowTableOptions.md)&gt;
| Name | Type |
| :------ | :------ |
| `values?` | `Partial`\<[`MakeArrowTableOptions`](MakeArrowTableOptions.md)\> |
#### Returns
[`MakeArrowTableOptions`](MakeArrowTableOptions.md)
#### Defined in
[arrow.ts:100](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L100)
## Properties
### dictionaryEncodeStrings
> **dictionaryEncodeStrings**: `boolean` = `false`
**dictionaryEncodeStrings**: `boolean` = `false`
If true then string columns will be encoded with dictionary encoding
@@ -36,26 +50,26 @@ data type for individual columns.
If `schema` is provided then this property is ignored.
***
#### Defined in
### embeddingFunction?
[arrow.ts:98](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L98)
> `optional` **embeddingFunction**: [`EmbeddingFunctionConfig`](../namespaces/embedding/interfaces/EmbeddingFunctionConfig.md)
___
***
### schema
### embeddings?
`Optional` **schema**: `Schema`\<`any`\>
> `optional` **embeddings**: [`EmbeddingFunction`](../namespaces/embedding/classes/EmbeddingFunction.md)&lt;`unknown`, `FunctionOptions`&gt;
#### Defined in
***
[arrow.ts:67](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L67)
### schema?
> `optional` **schema**: `SchemaLike`
***
___
### vectorColumns
> **vectorColumns**: `Record`&lt;`string`, [`VectorColumnOptions`](VectorColumnOptions.md)&gt;
**vectorColumns**: `Record`\<`string`, [`VectorColumnOptions`](VectorColumnOptions.md)\>
#### Defined in
[arrow.ts:85](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L85)

View File

@@ -1,26 +1,48 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / Query
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / Query
# Class: Query
A builder for LanceDB queries.
## Extends
## Hierarchy
- [`QueryBase`](QueryBase.md)&lt;`NativeQuery`&gt;
- [`QueryBase`](QueryBase.md)\<`NativeQuery`, [`Query`](Query.md)\>
**`Query`**
## Table of contents
### Constructors
- [constructor](Query.md#constructor)
### Properties
- [inner](Query.md#inner)
### Methods
- [[asyncIterator]](Query.md#[asynciterator])
- [execute](Query.md#execute)
- [limit](Query.md#limit)
- [nativeExecute](Query.md#nativeexecute)
- [nearestTo](Query.md#nearestto)
- [select](Query.md#select)
- [toArray](Query.md#toarray)
- [toArrow](Query.md#toarrow)
- [where](Query.md#where)
## Constructors
### new Query()
### constructor
> **new Query**(`tbl`): [`Query`](Query.md)
**new Query**(`tbl`): [`Query`](Query.md)
#### Parameters
**tbl**: `Table`
| Name | Type |
| :------ | :------ |
| `tbl` | `Table` |
#### Returns
@@ -28,67 +50,57 @@ A builder for LanceDB queries.
#### Overrides
[`QueryBase`](QueryBase.md).[`constructor`](QueryBase.md#constructors)
[QueryBase](QueryBase.md).[constructor](QueryBase.md#constructor)
#### Defined in
[query.ts:329](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L329)
## Properties
### inner
> `protected` **inner**: `Query` \| `Promise`&lt;`Query`&gt;
`Protected` **inner**: `Query`
#### Inherited from
[`QueryBase`](QueryBase.md).[`inner`](QueryBase.md#inner)
[QueryBase](QueryBase.md).[inner](QueryBase.md#inner)
#### Defined in
[query.ts:59](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L59)
## Methods
### \[asyncIterator\]()
### [asyncIterator]
> **\[asyncIterator\]**(): `AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
**[asyncIterator]**(): `AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
#### Returns
`AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
`AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
#### Inherited from
[`QueryBase`](QueryBase.md).[`[asyncIterator]`](QueryBase.md#%5Basynciterator%5D)
[QueryBase](QueryBase.md).[[asyncIterator]](QueryBase.md#[asynciterator])
***
#### Defined in
### doCall()
[query.ts:154](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L154)
> `protected` **doCall**(`fn`): `void`
___
#### Parameters
### execute
**fn**
#### Returns
`void`
#### Inherited from
[`QueryBase`](QueryBase.md).[`doCall`](QueryBase.md#docall)
***
### execute()
> `protected` **execute**(`options`?): [`RecordBatchIterator`](RecordBatchIterator.md)
**execute**(): [`RecordBatchIterator`](RecordBatchIterator.md)
Execute the query and return the results as an
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
[`RecordBatchIterator`](RecordBatchIterator.md)
#### See
**`See`**
- AsyncIterator
of
@@ -102,76 +114,17 @@ single query)
#### Inherited from
[`QueryBase`](QueryBase.md).[`execute`](QueryBase.md#execute)
[QueryBase](QueryBase.md).[execute](QueryBase.md#execute)
***
#### Defined in
### explainPlan()
[query.ts:149](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L149)
> **explainPlan**(`verbose`): `Promise`&lt;`string`&gt;
___
Generates an explanation of the query execution plan.
### limit
#### Parameters
**verbose**: `boolean` = `false`
If true, provides a more detailed explanation. Defaults to false.
#### Returns
`Promise`&lt;`string`&gt;
A Promise that resolves to a string containing the query execution plan explanation.
#### Example
```ts
import * as lancedb from "@lancedb/lancedb"
const db = await lancedb.connect("./.lancedb");
const table = await db.createTable("my_table", [
{ vector: [1.1, 0.9], id: "1" },
]);
const plan = await table.query().nearestTo([0.5, 0.2]).explainPlan();
```
#### Inherited from
[`QueryBase`](QueryBase.md).[`explainPlan`](QueryBase.md#explainplan)
***
### ~~filter()~~
> **filter**(`predicate`): `this`
A filter statement to be applied to this query.
#### Parameters
**predicate**: `string`
#### Returns
`this`
#### Alias
where
#### Deprecated
Use `where` instead
#### Inherited from
[`QueryBase`](QueryBase.md).[`filter`](QueryBase.md#filter)
***
### limit()
> **limit**(`limit`): `this`
**limit**(`limit`): [`Query`](Query.md)
Set the maximum number of results to return.
@@ -180,39 +133,45 @@ called then every valid row from the table will be returned.
#### Parameters
**limit**: `number`
| Name | Type |
| :------ | :------ |
| `limit` | `number` |
#### Returns
`this`
[`Query`](Query.md)
#### Inherited from
[`QueryBase`](QueryBase.md).[`limit`](QueryBase.md#limit)
[QueryBase](QueryBase.md).[limit](QueryBase.md#limit)
***
#### Defined in
### nativeExecute()
[query.ts:129](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L129)
> `protected` **nativeExecute**(`options`?): `Promise`&lt;`RecordBatchIterator`&gt;
___
#### Parameters
### nativeExecute
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
**nativeExecute**(): `Promise`\<`RecordBatchIterator`\>
#### Returns
`Promise`&lt;`RecordBatchIterator`&gt;
`Promise`\<`RecordBatchIterator`\>
#### Inherited from
[`QueryBase`](QueryBase.md).[`nativeExecute`](QueryBase.md#nativeexecute)
[QueryBase](QueryBase.md).[nativeExecute](QueryBase.md#nativeexecute)
***
#### Defined in
### nearestTo()
[query.ts:134](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L134)
> **nearestTo**(`vector`): [`VectorQuery`](VectorQuery.md)
___
### nearestTo
**nearestTo**(`vector`): [`VectorQuery`](VectorQuery.md)
Find the nearest vectors to the given query vector.
@@ -232,13 +191,15 @@ If there is more than one vector column you must use
#### Parameters
**vector**: `IntoVector`
| Name | Type |
| :------ | :------ |
| `vector` | `unknown` |
#### Returns
[`VectorQuery`](VectorQuery.md)
#### See
**`See`**
- [VectorQuery#column](VectorQuery.md#column) to specify which column you would like
to compare with.
@@ -262,11 +223,15 @@ Vector searches always have a `limit`. If `limit` has not been called then
a default `limit` of 10 will be used.
- [Query#limit](Query.md#limit)
***
#### Defined in
### select()
[query.ts:370](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L370)
> **select**(`columns`): `this`
___
### select
**select**(`columns`): [`Query`](Query.md)
Return only the specified columns.
@@ -290,13 +255,15 @@ input to this method would be:
#### Parameters
**columns**: `string` \| `string`[] \| `Record`&lt;`string`, `string`&gt; \| `Map`&lt;`string`, `string`&gt;
| Name | Type |
| :------ | :------ |
| `columns` | `string`[] \| `Record`\<`string`, `string`\> \| `Map`\<`string`, `string`\> |
#### Returns
`this`
[`Query`](Query.md)
#### Example
**`Example`**
```ts
new Map([["combined", "a + b"], ["c", "c"]])
@@ -311,57 +278,61 @@ object insertion order is easy to get wrong and `Map` is more foolproof.
#### Inherited from
[`QueryBase`](QueryBase.md).[`select`](QueryBase.md#select)
[QueryBase](QueryBase.md).[select](QueryBase.md#select)
***
#### Defined in
### toArray()
[query.ts:108](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L108)
> **toArray**(`options`?): `Promise`&lt;`any`[]&gt;
___
### toArray
**toArray**(): `Promise`\<`unknown`[]\>
Collect the results as an array of objects.
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`&lt;`any`[]&gt;
`Promise`\<`unknown`[]\>
#### Inherited from
[`QueryBase`](QueryBase.md).[`toArray`](QueryBase.md#toarray)
[QueryBase](QueryBase.md).[toArray](QueryBase.md#toarray)
***
#### Defined in
### toArrow()
[query.ts:169](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L169)
> **toArrow**(`options`?): `Promise`&lt;`Table`&lt;`any`&gt;&gt;
___
### toArrow
**toArrow**(): `Promise`\<`Table`\<`any`\>\>
Collect the results as an Arrow
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`&lt;`Table`&lt;`any`&gt;&gt;
`Promise`\<`Table`\<`any`\>\>
#### See
**`See`**
ArrowTable.
#### Inherited from
[`QueryBase`](QueryBase.md).[`toArrow`](QueryBase.md#toarrow)
[QueryBase](QueryBase.md).[toArrow](QueryBase.md#toarrow)
***
#### Defined in
### where()
[query.ts:160](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L160)
> **where**(`predicate`): `this`
___
### where
**where**(`predicate`): [`Query`](Query.md)
A filter statement to be applied to this query.
@@ -369,13 +340,15 @@ The filter should be supplied as an SQL query string. For example:
#### Parameters
**predicate**: `string`
| Name | Type |
| :------ | :------ |
| `predicate` | `string` |
#### Returns
`this`
[`Query`](Query.md)
#### Example
**`Example`**
```ts
x > 10
@@ -388,4 +361,8 @@ on the filter column(s).
#### Inherited from
[`QueryBase`](QueryBase.md).[`where`](QueryBase.md#where)
[QueryBase](QueryBase.md).[where](QueryBase.md#where)
#### Defined in
[query.ts:73](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L73)

View File

@@ -1,91 +1,117 @@
[**@lancedb/lancedb**](../README.md) **Docs**
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / QueryBase
***
[@lancedb/lancedb](../globals.md) / QueryBase
# Class: QueryBase&lt;NativeQueryType&gt;
# Class: QueryBase\<NativeQueryType, QueryType\>
Common methods supported by all query types
## Extended by
## Type parameters
- [`Query`](Query.md)
- [`VectorQuery`](VectorQuery.md)
| Name | Type |
| :------ | :------ |
| `NativeQueryType` | extends `NativeQuery` \| `NativeVectorQuery` |
| `QueryType` | `QueryType` |
## Type Parameters
## Hierarchy
**NativeQueryType** *extends* `NativeQuery` \| `NativeVectorQuery`
- **`QueryBase`**
↳ [`Query`](Query.md)
↳ [`VectorQuery`](VectorQuery.md)
## Implements
- `AsyncIterable`&lt;`RecordBatch`&gt;
- `AsyncIterable`\<`RecordBatch`\>
## Table of contents
### Constructors
- [constructor](QueryBase.md#constructor)
### Properties
- [inner](QueryBase.md#inner)
### Methods
- [[asyncIterator]](QueryBase.md#[asynciterator])
- [execute](QueryBase.md#execute)
- [limit](QueryBase.md#limit)
- [nativeExecute](QueryBase.md#nativeexecute)
- [select](QueryBase.md#select)
- [toArray](QueryBase.md#toarray)
- [toArrow](QueryBase.md#toarrow)
- [where](QueryBase.md#where)
## Constructors
### new QueryBase()
### constructor
> `protected` **new QueryBase**&lt;`NativeQueryType`&gt;(`inner`): [`QueryBase`](QueryBase.md)&lt;`NativeQueryType`&gt;
**new QueryBase**\<`NativeQueryType`, `QueryType`\>(`inner`): [`QueryBase`](QueryBase.md)\<`NativeQueryType`, `QueryType`\>
#### Type parameters
| Name | Type |
| :------ | :------ |
| `NativeQueryType` | extends `Query` \| `VectorQuery` |
| `QueryType` | `QueryType` |
#### Parameters
**inner**: `NativeQueryType` \| `Promise`&lt;`NativeQueryType`&gt;
| Name | Type |
| :------ | :------ |
| `inner` | `NativeQueryType` |
#### Returns
[`QueryBase`](QueryBase.md)&lt;`NativeQueryType`&gt;
[`QueryBase`](QueryBase.md)\<`NativeQueryType`, `QueryType`\>
#### Defined in
[query.ts:59](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L59)
## Properties
### inner
> `protected` **inner**: `NativeQueryType` \| `Promise`&lt;`NativeQueryType`&gt;
`Protected` **inner**: `NativeQueryType`
#### Defined in
[query.ts:59](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L59)
## Methods
### \[asyncIterator\]()
### [asyncIterator]
> **\[asyncIterator\]**(): `AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
**[asyncIterator]**(): `AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
#### Returns
`AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
`AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
#### Implementation of
`AsyncIterable.[asyncIterator]`
AsyncIterable.[asyncIterator]
***
#### Defined in
### doCall()
[query.ts:154](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L154)
> `protected` **doCall**(`fn`): `void`
___
#### Parameters
### execute
**fn**
#### Returns
`void`
***
### execute()
> `protected` **execute**(`options`?): [`RecordBatchIterator`](RecordBatchIterator.md)
**execute**(): [`RecordBatchIterator`](RecordBatchIterator.md)
Execute the query and return the results as an
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
[`RecordBatchIterator`](RecordBatchIterator.md)
#### See
**`See`**
- AsyncIterator
of
@@ -97,66 +123,15 @@ This readahead is limited however and backpressure will be applied if this
stream is consumed slowly (this constrains the maximum memory used by a
single query)
***
#### Defined in
### explainPlan()
[query.ts:149](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L149)
> **explainPlan**(`verbose`): `Promise`&lt;`string`&gt;
___
Generates an explanation of the query execution plan.
### limit
#### Parameters
**verbose**: `boolean` = `false`
If true, provides a more detailed explanation. Defaults to false.
#### Returns
`Promise`&lt;`string`&gt;
A Promise that resolves to a string containing the query execution plan explanation.
#### Example
```ts
import * as lancedb from "@lancedb/lancedb"
const db = await lancedb.connect("./.lancedb");
const table = await db.createTable("my_table", [
{ vector: [1.1, 0.9], id: "1" },
]);
const plan = await table.query().nearestTo([0.5, 0.2]).explainPlan();
```
***
### ~~filter()~~
> **filter**(`predicate`): `this`
A filter statement to be applied to this query.
#### Parameters
**predicate**: `string`
#### Returns
`this`
#### Alias
where
#### Deprecated
Use `where` instead
***
### limit()
> **limit**(`limit`): `this`
**limit**(`limit`): `QueryType`
Set the maximum number of results to return.
@@ -165,31 +140,37 @@ called then every valid row from the table will be returned.
#### Parameters
**limit**: `number`
| Name | Type |
| :------ | :------ |
| `limit` | `number` |
#### Returns
`this`
`QueryType`
***
#### Defined in
### nativeExecute()
[query.ts:129](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L129)
> `protected` **nativeExecute**(`options`?): `Promise`&lt;`RecordBatchIterator`&gt;
___
#### Parameters
### nativeExecute
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
**nativeExecute**(): `Promise`\<`RecordBatchIterator`\>
#### Returns
`Promise`&lt;`RecordBatchIterator`&gt;
`Promise`\<`RecordBatchIterator`\>
***
#### Defined in
### select()
[query.ts:134](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L134)
> **select**(`columns`): `this`
___
### select
**select**(`columns`): `QueryType`
Return only the specified columns.
@@ -213,13 +194,15 @@ input to this method would be:
#### Parameters
**columns**: `string` \| `string`[] \| `Record`&lt;`string`, `string`&gt; \| `Map`&lt;`string`, `string`&gt;
| Name | Type |
| :------ | :------ |
| `columns` | `string`[] \| `Record`\<`string`, `string`\> \| `Map`\<`string`, `string`\> |
#### Returns
`this`
`QueryType`
#### Example
**`Example`**
```ts
new Map([["combined", "a + b"], ["c", "c"]])
@@ -232,47 +215,51 @@ uses `Object.entries` which should preserve the insertion order of the object.
object insertion order is easy to get wrong and `Map` is more foolproof.
```
***
#### Defined in
### toArray()
[query.ts:108](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L108)
> **toArray**(`options`?): `Promise`&lt;`any`[]&gt;
___
### toArray
**toArray**(): `Promise`\<`unknown`[]\>
Collect the results as an array of objects.
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`&lt;`any`[]&gt;
`Promise`\<`unknown`[]\>
***
#### Defined in
### toArrow()
[query.ts:169](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L169)
> **toArrow**(`options`?): `Promise`&lt;`Table`&lt;`any`&gt;&gt;
___
### toArrow
**toArrow**(): `Promise`\<`Table`\<`any`\>\>
Collect the results as an Arrow
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`&lt;`Table`&lt;`any`&gt;&gt;
`Promise`\<`Table`\<`any`\>\>
#### See
**`See`**
ArrowTable.
***
#### Defined in
### where()
[query.ts:160](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L160)
> **where**(`predicate`): `this`
___
### where
**where**(`predicate`): `QueryType`
A filter statement to be applied to this query.
@@ -280,13 +267,15 @@ The filter should be supplied as an SQL query string. For example:
#### Parameters
**predicate**: `string`
| Name | Type |
| :------ | :------ |
| `predicate` | `string` |
#### Returns
`this`
`QueryType`
#### Example
**`Example`**
```ts
x > 10
@@ -296,3 +285,7 @@ x > 5 OR y = 'test'
Filtering performance can often be improved by creating a scalar index
on the filter column(s).
```
#### Defined in
[query.ts:73](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L73)

View File

@@ -1,39 +1,80 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / RecordBatchIterator
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / RecordBatchIterator
# Class: RecordBatchIterator
## Implements
- `AsyncIterator`&lt;`RecordBatch`&gt;
- `AsyncIterator`\<`RecordBatch`\>
## Table of contents
### Constructors
- [constructor](RecordBatchIterator.md#constructor)
### Properties
- [inner](RecordBatchIterator.md#inner)
- [promisedInner](RecordBatchIterator.md#promisedinner)
### Methods
- [next](RecordBatchIterator.md#next)
## Constructors
### new RecordBatchIterator()
### constructor
> **new RecordBatchIterator**(`promise`?): [`RecordBatchIterator`](RecordBatchIterator.md)
**new RecordBatchIterator**(`promise?`): [`RecordBatchIterator`](RecordBatchIterator.md)
#### Parameters
**promise?**: `Promise`&lt;`RecordBatchIterator`&gt;
| Name | Type |
| :------ | :------ |
| `promise?` | `Promise`\<`RecordBatchIterator`\> |
#### Returns
[`RecordBatchIterator`](RecordBatchIterator.md)
#### Defined in
[query.ts:27](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L27)
## Properties
### inner
`Private` `Optional` **inner**: `RecordBatchIterator`
#### Defined in
[query.ts:25](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L25)
___
### promisedInner
`Private` `Optional` **promisedInner**: `Promise`\<`RecordBatchIterator`\>
#### Defined in
[query.ts:24](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L24)
## Methods
### next()
### next
> **next**(): `Promise`&lt;`IteratorResult`&lt;`RecordBatch`&lt;`any`&gt;, `any`&gt;&gt;
**next**(): `Promise`\<`IteratorResult`\<`RecordBatch`\<`any`\>, `any`\>\>
#### Returns
`Promise`&lt;`IteratorResult`&lt;`RecordBatch`&lt;`any`&gt;, `any`&gt;&gt;
`Promise`\<`IteratorResult`\<`RecordBatch`\<`any`\>, `any`\>\>
#### Implementation of
`AsyncIterator.next`
AsyncIterator.next
#### Defined in
[query.ts:33](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L33)

View File

@@ -1,10 +1,6 @@
[**@lancedb/lancedb**](../README.md) **Docs**
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / Table
***
[@lancedb/lancedb](../globals.md) / Table
# Class: `abstract` Table
# Class: Table
A Table is a collection of Records in a LanceDB Database.
@@ -17,149 +13,196 @@ further operations.
Closing a table is optional. It not closed, it will be closed when it is garbage
collected.
## Table of contents
### Constructors
- [constructor](Table.md#constructor)
### Properties
- [inner](Table.md#inner)
### Methods
- [add](Table.md#add)
- [addColumns](Table.md#addcolumns)
- [alterColumns](Table.md#altercolumns)
- [checkout](Table.md#checkout)
- [checkoutLatest](Table.md#checkoutlatest)
- [close](Table.md#close)
- [countRows](Table.md#countrows)
- [createIndex](Table.md#createindex)
- [delete](Table.md#delete)
- [display](Table.md#display)
- [dropColumns](Table.md#dropcolumns)
- [isOpen](Table.md#isopen)
- [listIndices](Table.md#listindices)
- [query](Table.md#query)
- [restore](Table.md#restore)
- [schema](Table.md#schema)
- [update](Table.md#update)
- [vectorSearch](Table.md#vectorsearch)
- [version](Table.md#version)
## Constructors
### new Table()
### constructor
> **new Table**(): [`Table`](Table.md)
**new Table**(`inner`): [`Table`](Table.md)
Construct a Table. Internal use only.
#### Parameters
| Name | Type |
| :------ | :------ |
| `inner` | `Table` |
#### Returns
[`Table`](Table.md)
## Accessors
#### Defined in
### name
[table.ts:69](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L69)
> `get` `abstract` **name**(): `string`
## Properties
Returns the name of the table
### inner
#### Returns
`Private` `Readonly` **inner**: `Table`
`string`
#### Defined in
[table.ts:66](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L66)
## Methods
### add()
### add
> `abstract` **add**(`data`, `options`?): `Promise`&lt;`void`&gt;
**add**(`data`, `options?`): `Promise`\<`void`\>
Insert records into this Table.
#### Parameters
**data**: [`Data`](../type-aliases/Data.md)
Records to be inserted into the Table
**options?**: `Partial`&lt;[`AddDataOptions`](../interfaces/AddDataOptions.md)&gt;
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | [`Data`](../modules.md#data) | Records to be inserted into the Table |
| `options?` | `Partial`\<[`AddDataOptions`](../interfaces/AddDataOptions.md)\> | - |
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
***
#### Defined in
### addColumns()
[table.ts:105](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L105)
> `abstract` **addColumns**(`newColumnTransforms`): `Promise`&lt;`void`&gt;
___
### addColumns
**addColumns**(`newColumnTransforms`): `Promise`\<`void`\>
Add new columns with defined values.
#### Parameters
**newColumnTransforms**: [`AddColumnsSql`](../interfaces/AddColumnsSql.md)[]
pairs of column names and
the SQL expression to use to calculate the value of the new column. These
expressions will be evaluated for each row in the table, and can
reference existing columns in the table.
| Name | Type | Description |
| :------ | :------ | :------ |
| `newColumnTransforms` | [`AddColumnsSql`](../interfaces/AddColumnsSql.md)[] | pairs of column names and the SQL expression to use to calculate the value of the new column. These expressions will be evaluated for each row in the table, and can reference existing columns in the table. |
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
***
#### Defined in
### alterColumns()
[table.ts:261](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L261)
> `abstract` **alterColumns**(`columnAlterations`): `Promise`&lt;`void`&gt;
___
### alterColumns
**alterColumns**(`columnAlterations`): `Promise`\<`void`\>
Alter the name or nullability of columns.
#### Parameters
**columnAlterations**: [`ColumnAlteration`](../interfaces/ColumnAlteration.md)[]
One or more alterations to
apply to columns.
| Name | Type | Description |
| :------ | :------ | :------ |
| `columnAlterations` | [`ColumnAlteration`](../interfaces/ColumnAlteration.md)[] | One or more alterations to apply to columns. |
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
***
#### Defined in
### checkout()
[table.ts:270](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L270)
> `abstract` **checkout**(`version`): `Promise`&lt;`void`&gt;
___
Checks out a specific version of the table _This is an in-place operation._
### checkout
This allows viewing previous versions of the table. If you wish to
keep writing to the dataset starting from an old version, then use
the `restore` function.
**checkout**(`version`): `Promise`\<`void`\>
Calling this method will set the table into time-travel mode. If you
wish to return to standard mode, call `checkoutLatest`.
Checks out a specific version of the Table
Any read operation on the table will now access the data at the checked out version.
As a consequence, calling this method will disable any read consistency interval
that was previously set.
This is a read-only operation that turns the table into a sort of "view"
or "detached head". Other table instances will not be affected. To make the change
permanent you can use the `[Self::restore]` method.
Any operation that modifies the table will fail while the table is in a checked
out state.
To return the table to a normal state use `[Self::checkout_latest]`
#### Parameters
**version**: `number`
The version to checkout
| Name | Type |
| :------ | :------ |
| `version` | `number` |
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
#### Example
#### Defined in
```typescript
import * as lancedb from "@lancedb/lancedb"
const db = await lancedb.connect("./.lancedb");
const table = await db.createTable("my_table", [
{ vector: [1.1, 0.9], type: "vector" },
]);
[table.ts:317](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L317)
console.log(await table.version()); // 1
console.log(table.display());
await table.add([{ vector: [0.5, 0.2], type: "vector" }]);
await table.checkout(1);
console.log(await table.version()); // 2
```
___
***
### checkoutLatest
### checkoutLatest()
**checkoutLatest**(): `Promise`\<`void`\>
> `abstract` **checkoutLatest**(): `Promise`&lt;`void`&gt;
Ensures the table is pointing at the latest version
Checkout the latest version of the table. _This is an in-place operation._
The table will be set back into standard mode, and will track the latest
version of the table.
This can be used to manually update a table when the read_consistency_interval is None
It can also be used to undo a `[Self::checkout]` operation
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
***
#### Defined in
### close()
[table.ts:327](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L327)
> `abstract` **close**(): `void`
___
### close
**close**(): `void`
Close the table, releasing any underlying resources.
@@ -171,27 +214,37 @@ Any attempt to use the table after it is closed will result in an error.
`void`
***
#### Defined in
### countRows()
[table.ts:85](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L85)
> `abstract` **countRows**(`filter`?): `Promise`&lt;`number`&gt;
___
### countRows
**countRows**(`filter?`): `Promise`\<`number`\>
Count the total number of rows in the dataset.
#### Parameters
**filter?**: `string`
| Name | Type |
| :------ | :------ |
| `filter?` | `string` |
#### Returns
`Promise`&lt;`number`&gt;
`Promise`\<`number`\>
***
#### Defined in
### createIndex()
[table.ts:152](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L152)
> `abstract` **createIndex**(`column`, `options`?): `Promise`&lt;`void`&gt;
___
### createIndex
**createIndex**(`column`, `options?`): `Promise`\<`void`\>
Create an index to speed up queries.
@@ -202,66 +255,73 @@ vector and non-vector searches)
#### Parameters
**column**: `string`
**options?**: `Partial`&lt;[`IndexOptions`](../interfaces/IndexOptions.md)&gt;
| Name | Type |
| :------ | :------ |
| `column` | `string` |
| `options?` | `Partial`\<[`IndexOptions`](../interfaces/IndexOptions.md)\> |
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
#### Note
We currently don't support custom named indexes,
The index name will always be `${column}_idx`
#### Examples
**`Example`**
```ts
// If the column has a vector (fixed size list) data type then
// an IvfPq vector index will be created.
const table = await conn.openTable("my_table");
await table.createIndex("vector");
await table.createIndex(["vector"]);
```
**`Example`**
```ts
// For advanced control over vector index creation you can specify
// the index type and options.
const table = await conn.openTable("my_table");
await table.createIndex("vector", {
config: lancedb.Index.ivfPq({
numPartitions: 128,
numSubVectors: 16,
}),
});
await table.createIndex(["vector"], I)
.ivf_pq({ num_partitions: 128, num_sub_vectors: 16 })
.build();
```
**`Example`**
```ts
// Or create a Scalar index
await table.createIndex("my_float_col");
await table.createIndex("my_float_col").build();
```
***
#### Defined in
### delete()
[table.ts:184](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L184)
> `abstract` **delete**(`predicate`): `Promise`&lt;`void`&gt;
___
### delete
**delete**(`predicate`): `Promise`\<`void`\>
Delete the rows that satisfy the predicate.
#### Parameters
**predicate**: `string`
| Name | Type |
| :------ | :------ |
| `predicate` | `string` |
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
***
#### Defined in
### display()
[table.ts:157](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L157)
> `abstract` **display**(): `string`
___
### display
**display**(): `string`
Return a brief description of the table
@@ -269,11 +329,15 @@ Return a brief description of the table
`string`
***
#### Defined in
### dropColumns()
[table.ts:90](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L90)
> `abstract` **dropColumns**(`columnNames`): `Promise`&lt;`void`&gt;
___
### dropColumns
**dropColumns**(`columnNames`): `Promise`\<`void`\>
Drop one or more columns from the dataset
@@ -284,41 +348,23 @@ then call ``cleanup_files`` to remove the old files.
#### Parameters
• **columnNames**: `string`[]
The names of the columns to drop. These can
be nested column references (e.g. "a.b.c") or top-level column names
(e.g. "a").
| Name | Type | Description |
| :------ | :------ | :------ |
| `columnNames` | `string`[] | The names of the columns to drop. These can be nested column references (e.g. "a.b.c") or top-level column names (e.g. "a"). |
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
***
#### Defined in
### indexStats()
[table.ts:285](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L285)
> `abstract` **indexStats**(`name`): `Promise`&lt;`undefined` \| [`IndexStatistics`](../interfaces/IndexStatistics.md)&gt;
___
List all the stats of a specified index
### isOpen
#### Parameters
• **name**: `string`
The name of the index.
#### Returns
`Promise`&lt;`undefined` \| [`IndexStatistics`](../interfaces/IndexStatistics.md)&gt;
The stats of the index. If the index does not exist, it will return undefined
***
### isOpen()
> `abstract` **isOpen**(): `boolean`
▸ **isOpen**(): `boolean`
Return true if the table has not been closed
@@ -326,79 +372,31 @@ Return true if the table has not been closed
`boolean`
***
#### Defined in
### listIndices()
[table.ts:74](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L74)
> `abstract` **listIndices**(): `Promise`&lt;[`IndexConfig`](../interfaces/IndexConfig.md)[]&gt;
___
List all indices that have been created with [Table.createIndex](Table.md#createindex)
### listIndices
▸ **listIndices**(): `Promise`\<[`IndexConfig`](../interfaces/IndexConfig.md)[]\>
List all indices that have been created with Self::create_index
#### Returns
`Promise`&lt;[`IndexConfig`](../interfaces/IndexConfig.md)[]&gt;
`Promise`\<[`IndexConfig`](../interfaces/IndexConfig.md)[]\>
***
#### Defined in
### mergeInsert()
[table.ts:350](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L350)
> `abstract` **mergeInsert**(`on`): `MergeInsertBuilder`
___
#### Parameters
### query
**on**: `string` \| `string`[]
#### Returns
`MergeInsertBuilder`
***
### optimize()
> `abstract` **optimize**(`options`?): `Promise`&lt;`OptimizeStats`&gt;
Optimize the on-disk data and indices for better performance.
Modeled after ``VACUUM`` in PostgreSQL.
Optimization covers three operations:
- Compaction: Merges small files into larger ones
- Prune: Removes old versions of the dataset
- Index: Optimizes the indices, adding new data to existing indices
Experimental API
----------------
The optimization process is undergoing active development and may change.
Our goal with these changes is to improve the performance of optimization and
reduce the complexity.
That being said, it is essential today to run optimize if you want the best
performance. It should be stable and safe to use in production, but it our
hope that the API may be simplified (or not even need to be called) in the
future.
The frequency an application shoudl call optimize is based on the frequency of
data modifications. If data is frequently added, deleted, or updated then
optimize should be run frequently. A good rule of thumb is to run optimize if
you have added or modified 100,000 or more records or run more than 20 data
modification operations.
#### Parameters
• **options?**: `Partial`&lt;`OptimizeOptions`&gt;
#### Returns
`Promise`&lt;`OptimizeStats`&gt;
***
### query()
> `abstract` **query**(): [`Query`](Query.md)
**query**(): [`Query`](Query.md)
Create a [Query](Query.md) Builder.
@@ -408,7 +406,8 @@ returned by this method can be used to control the query using filtering,
vector similarity, sorting, and more.
Note: By default, all columns are returned. For best performance, you should
only fetch the columns you need.
only fetch the columns you need. See [`Query::select_with_projection`] for
more details.
When appropriate, various indices and statistics based pruning will be used to
accelerate the query.
@@ -419,22 +418,21 @@ accelerate the query.
A builder that can be used to parameterize the query
#### Examples
**`Example`**
```ts
// SQL-style filtering
//
// This query will return up to 1000 rows whose value in the `id` column
// is greater than 5. LanceDb supports a broad set of filtering functions.
for await (const batch of table
.query()
.where("id > 1")
.select(["id"])
.limit(20)) {
console.log(batch);
// is greater than 5. LanceDb supports a broad set of filtering functions.
for await (const batch of table.query()
.filter("id > 1").select(["id"]).limit(20)) {
console.log(batch);
}
```
**`Example`**
```ts
// Vector Similarity Search
//
@@ -442,17 +440,18 @@ for await (const batch of table
// closest to the query vector [1.0, 2.0, 3.0]. If an index has been created
// on the "vector" column then this will perform an ANN search.
//
// The `refineFactor` and `nprobes` methods are used to control the recall /
// The `refine_factor` and `nprobes` methods are used to control the recall /
// latency tradeoff of the search.
for await (const batch of table
.query()
.where("id > 1")
.select(["id"])
.limit(20)) {
console.log(batch);
for await (const batch of table.query()
.nearestTo([1, 2, 3])
.refineFactor(5).nprobe(10)
.limit(10)) {
console.log(batch);
}
```
**`Example`**
```ts
// Scan the full dataset
//
@@ -462,11 +461,15 @@ for await (const batch of table.query()) {
}
```
***
#### Defined in
### restore()
[table.ts:238](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L238)
> `abstract` **restore**(): `Promise`&lt;`void`&gt;
___
### restore
▸ **restore**(): `Promise`\<`void`\>
Restore the table to the currently checked out version
@@ -481,121 +484,33 @@ out state and the read_consistency_interval, if any, will apply.
#### Returns
`Promise`&lt;`void`&gt;
`Promise`\<`void`\>
***
#### Defined in
### schema()
[table.ts:343](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L343)
> `abstract` **schema**(): `Promise`&lt;`Schema`&lt;`any`&gt;&gt;
___
### schema
▸ **schema**(): `Promise`\<`Schema`\<`any`\>\>
Get the schema of the table.
#### Returns
`Promise`&lt;`Schema`&lt;`any`&gt;&gt;
`Promise`\<`Schema`\<`any`\>\>
***
#### Defined in
### search()
[table.ts:95](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L95)
#### search(query)
___
> `abstract` **search**(`query`): [`VectorQuery`](VectorQuery.md)
### update
Create a search query to find the nearest neighbors
of the given query vector
##### Parameters
• **query**: `string`
the query. This will be converted to a vector using the table's provided embedding function
##### Returns
[`VectorQuery`](VectorQuery.md)
##### Note
If no embedding functions are defined in the table, this will error when collecting the results.
#### search(query)
> `abstract` **search**(`query`): [`VectorQuery`](VectorQuery.md)
Create a search query to find the nearest neighbors
of the given query vector
##### Parameters
• **query**: `IntoVector`
the query vector
##### Returns
[`VectorQuery`](VectorQuery.md)
***
### toArrow()
> `abstract` **toArrow**(): `Promise`&lt;`Table`&lt;`any`&gt;&gt;
Return the table as an arrow table
#### Returns
`Promise`&lt;`Table`&lt;`any`&gt;&gt;
***
### update()
#### update(opts)
> `abstract` **update**(`opts`): `Promise`&lt;`void`&gt;
Update existing records in the Table
##### Parameters
• **opts**: `object` & `Partial`&lt;[`UpdateOptions`](../interfaces/UpdateOptions.md)&gt;
##### Returns
`Promise`&lt;`void`&gt;
##### Example
```ts
table.update({where:"x = 2", values:{"vector": [10, 10]}})
```
#### update(opts)
> `abstract` **update**(`opts`): `Promise`&lt;`void`&gt;
Update existing records in the Table
##### Parameters
• **opts**: `object` & `Partial`&lt;[`UpdateOptions`](../interfaces/UpdateOptions.md)&gt;
##### Returns
`Promise`&lt;`void`&gt;
##### Example
```ts
table.update({where:"x = 2", valuesSql:{"x": "x + 1"}})
```
#### update(updates, options)
> `abstract` **update**(`updates`, `options`?): `Promise`&lt;`void`&gt;
▸ **update**(`updates`, `options?`): `Promise`\<`void`\>
Update existing records in the Table
@@ -612,32 +527,26 @@ you are updating many rows (with different ids) then you will get
better performance with a single [`merge_insert`] call instead of
repeatedly calilng this method.
##### Parameters
#### Parameters
• **updates**: `Record`&lt;`string`, `string`&gt; \| `Map`&lt;`string`, `string`&gt;
| Name | Type | Description |
| :------ | :------ | :------ |
| `updates` | `Record`\<`string`, `string`\> \| `Map`\<`string`, `string`\> | the columns to update Keys in the map should specify the name of the column to update. Values in the map provide the new value of the column. These can be SQL literal strings (e.g. "7" or "'foo'") or they can be expressions based on the row being updated (e.g. "my_col + 1") |
| `options?` | `Partial`\<[`UpdateOptions`](../interfaces/UpdateOptions.md)\> | additional options to control the update behavior |
the
columns to update
#### Returns
Keys in the map should specify the name of the column to update.
Values in the map provide the new value of the column. These can
be SQL literal strings (e.g. "7" or "'foo'") or they can be expressions
based on the row being updated (e.g. "my_col + 1")
`Promise`\<`void`\>
• **options?**: `Partial`&lt;[`UpdateOptions`](../interfaces/UpdateOptions.md)&gt;
#### Defined in
additional options to control
the update behavior
[table.ts:137](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L137)
##### Returns
___
`Promise`&lt;`void`&gt;
### vectorSearch
***
### vectorSearch()
> `abstract` **vectorSearch**(`vector`): [`VectorQuery`](VectorQuery.md)
▸ **vectorSearch**(`vector`): [`VectorQuery`](VectorQuery.md)
Search the table with a given query vector.
@@ -647,50 +556,39 @@ by `query`.
#### Parameters
• **vector**: `IntoVector`
| Name | Type |
| :------ | :------ |
| `vector` | `unknown` |
#### Returns
[`VectorQuery`](VectorQuery.md)
#### See
**`See`**
[Query#nearestTo](Query.md#nearestto) for more details.
***
#### Defined in
### version()
[table.ts:249](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L249)
> `abstract` **version**(): `Promise`&lt;`number`&gt;
___
### version
▸ **version**(): `Promise`\<`number`\>
Retrieve the version of the table
#### Returns
`Promise`&lt;`number`&gt;
***
### parseTableData()
> `static` **parseTableData**(`data`, `options`?, `streaming`?): `Promise`&lt;`object`&gt;
#### Parameters
• **data**: `TableLike` \| `Record`&lt;`string`, `unknown`&gt;[]
• **options?**: `Partial`&lt;[`CreateTableOptions`](../interfaces/CreateTableOptions.md)&gt;
• **streaming?**: `boolean` = `false`
LanceDb supports versioning. Every operation that modifies the table increases
version. As long as a version hasn't been deleted you can `[Self::checkout]` that
version to view the data at that point. In addition, you can `[Self::restore]` the
version to replace the current table with a previous version.
#### Returns
`Promise`&lt;`object`&gt;
`Promise`\<`number`\>
##### buf
#### Defined in
> **buf**: `Buffer`
##### mode
> **mode**: `string`
[table.ts:297](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L297)

View File

@@ -1,29 +1,45 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / VectorColumnOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / VectorColumnOptions
# Class: VectorColumnOptions
## Table of contents
### Constructors
- [constructor](VectorColumnOptions.md#constructor)
### Properties
- [type](VectorColumnOptions.md#type)
## Constructors
### new VectorColumnOptions()
### constructor
> **new VectorColumnOptions**(`values`?): [`VectorColumnOptions`](VectorColumnOptions.md)
**new VectorColumnOptions**(`values?`): [`VectorColumnOptions`](VectorColumnOptions.md)
#### Parameters
**values?**: `Partial`&lt;[`VectorColumnOptions`](VectorColumnOptions.md)&gt;
| Name | Type |
| :------ | :------ |
| `values?` | `Partial`\<[`VectorColumnOptions`](VectorColumnOptions.md)\> |
#### Returns
[`VectorColumnOptions`](VectorColumnOptions.md)
#### Defined in
[arrow.ts:49](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L49)
## Properties
### type
> **type**: `Float`&lt;`Floats`&gt;
**type**: `Float`\<`Floats`\>
Vector column type.
#### Defined in
[arrow.ts:47](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/arrow.ts#L47)

View File

@@ -1,8 +1,4 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / VectorQuery
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / VectorQuery
# Class: VectorQuery
@@ -10,19 +6,50 @@ A builder used to construct a vector search
This builder can be reused to execute the query many times.
## Extends
## Hierarchy
- [`QueryBase`](QueryBase.md)&lt;`NativeVectorQuery`&gt;
- [`QueryBase`](QueryBase.md)\<`NativeVectorQuery`, [`VectorQuery`](VectorQuery.md)\>
**`VectorQuery`**
## Table of contents
### Constructors
- [constructor](VectorQuery.md#constructor)
### Properties
- [inner](VectorQuery.md#inner)
### Methods
- [[asyncIterator]](VectorQuery.md#[asynciterator])
- [bypassVectorIndex](VectorQuery.md#bypassvectorindex)
- [column](VectorQuery.md#column)
- [distanceType](VectorQuery.md#distancetype)
- [execute](VectorQuery.md#execute)
- [limit](VectorQuery.md#limit)
- [nativeExecute](VectorQuery.md#nativeexecute)
- [nprobes](VectorQuery.md#nprobes)
- [postfilter](VectorQuery.md#postfilter)
- [refineFactor](VectorQuery.md#refinefactor)
- [select](VectorQuery.md#select)
- [toArray](VectorQuery.md#toarray)
- [toArrow](VectorQuery.md#toarrow)
- [where](VectorQuery.md#where)
## Constructors
### new VectorQuery()
### constructor
> **new VectorQuery**(`inner`): [`VectorQuery`](VectorQuery.md)
**new VectorQuery**(`inner`): [`VectorQuery`](VectorQuery.md)
#### Parameters
**inner**: `VectorQuery` \| `Promise`&lt;`VectorQuery`&gt;
| Name | Type |
| :------ | :------ |
| `inner` | `VectorQuery` |
#### Returns
@@ -30,37 +57,49 @@ This builder can be reused to execute the query many times.
#### Overrides
[`QueryBase`](QueryBase.md).[`constructor`](QueryBase.md#constructors)
[QueryBase](QueryBase.md).[constructor](QueryBase.md#constructor)
#### Defined in
[query.ts:189](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L189)
## Properties
### inner
> `protected` **inner**: `VectorQuery` \| `Promise`&lt;`VectorQuery`&gt;
`Protected` **inner**: `VectorQuery`
#### Inherited from
[`QueryBase`](QueryBase.md).[`inner`](QueryBase.md#inner)
[QueryBase](QueryBase.md).[inner](QueryBase.md#inner)
#### Defined in
[query.ts:59](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L59)
## Methods
### \[asyncIterator\]()
### [asyncIterator]
> **\[asyncIterator\]**(): `AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
**[asyncIterator]**(): `AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
#### Returns
`AsyncIterator`&lt;`RecordBatch`&lt;`any`&gt;, `any`, `undefined`&gt;
`AsyncIterator`\<`RecordBatch`\<`any`\>, `any`, `undefined`\>
#### Inherited from
[`QueryBase`](QueryBase.md).[`[asyncIterator]`](QueryBase.md#%5Basynciterator%5D)
[QueryBase](QueryBase.md).[[asyncIterator]](QueryBase.md#[asynciterator])
***
#### Defined in
### bypassVectorIndex()
[query.ts:154](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L154)
> **bypassVectorIndex**(): [`VectorQuery`](VectorQuery.md)
___
### bypassVectorIndex
**bypassVectorIndex**(): [`VectorQuery`](VectorQuery.md)
If this is called then any vector index is skipped
@@ -74,11 +113,15 @@ calculate your recall to select an appropriate value for nprobes.
[`VectorQuery`](VectorQuery.md)
***
#### Defined in
### column()
[query.ts:321](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L321)
> **column**(`column`): [`VectorQuery`](VectorQuery.md)
___
### column
**column**(`column`): [`VectorQuery`](VectorQuery.md)
Set the vector column to query
@@ -87,24 +130,30 @@ the call to
#### Parameters
**column**: `string`
| Name | Type |
| :------ | :------ |
| `column` | `string` |
#### Returns
[`VectorQuery`](VectorQuery.md)
#### See
**`See`**
[Query#nearestTo](Query.md#nearestto)
This parameter must be specified if the table has more than one column
whose data type is a fixed-size-list of floats.
***
#### Defined in
### distanceType()
[query.ts:229](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L229)
> **distanceType**(`distanceType`): [`VectorQuery`](VectorQuery.md)
___
### distanceType
**distanceType**(`distanceType`): [`VectorQuery`](VectorQuery.md)
Set the distance metric to use
@@ -114,13 +163,15 @@ use. See
#### Parameters
**distanceType**: `"l2"` \| `"cosine"` \| `"dot"`
| Name | Type |
| :------ | :------ |
| `distanceType` | `string` |
#### Returns
[`VectorQuery`](VectorQuery.md)
#### See
**`See`**
[IvfPqOptions.distanceType](../interfaces/IvfPqOptions.md#distancetype) for more details on the different
distance metrics available.
@@ -131,41 +182,23 @@ invalid.
By default "l2" is used.
***
#### Defined in
### doCall()
[query.ts:248](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L248)
> `protected` **doCall**(`fn`): `void`
___
#### Parameters
### execute
**fn**
#### Returns
`void`
#### Inherited from
[`QueryBase`](QueryBase.md).[`doCall`](QueryBase.md#docall)
***
### execute()
> `protected` **execute**(`options`?): [`RecordBatchIterator`](RecordBatchIterator.md)
**execute**(): [`RecordBatchIterator`](RecordBatchIterator.md)
Execute the query and return the results as an
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
[`RecordBatchIterator`](RecordBatchIterator.md)
#### See
**`See`**
- AsyncIterator
of
@@ -179,76 +212,17 @@ single query)
#### Inherited from
[`QueryBase`](QueryBase.md).[`execute`](QueryBase.md#execute)
[QueryBase](QueryBase.md).[execute](QueryBase.md#execute)
***
#### Defined in
### explainPlan()
[query.ts:149](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L149)
> **explainPlan**(`verbose`): `Promise`&lt;`string`&gt;
___
Generates an explanation of the query execution plan.
### limit
#### Parameters
**verbose**: `boolean` = `false`
If true, provides a more detailed explanation. Defaults to false.
#### Returns
`Promise`&lt;`string`&gt;
A Promise that resolves to a string containing the query execution plan explanation.
#### Example
```ts
import * as lancedb from "@lancedb/lancedb"
const db = await lancedb.connect("./.lancedb");
const table = await db.createTable("my_table", [
{ vector: [1.1, 0.9], id: "1" },
]);
const plan = await table.query().nearestTo([0.5, 0.2]).explainPlan();
```
#### Inherited from
[`QueryBase`](QueryBase.md).[`explainPlan`](QueryBase.md#explainplan)
***
### ~~filter()~~
> **filter**(`predicate`): `this`
A filter statement to be applied to this query.
#### Parameters
**predicate**: `string`
#### Returns
`this`
#### Alias
where
#### Deprecated
Use `where` instead
#### Inherited from
[`QueryBase`](QueryBase.md).[`filter`](QueryBase.md#filter)
***
### limit()
> **limit**(`limit`): `this`
**limit**(`limit`): [`VectorQuery`](VectorQuery.md)
Set the maximum number of results to return.
@@ -257,39 +231,45 @@ called then every valid row from the table will be returned.
#### Parameters
**limit**: `number`
| Name | Type |
| :------ | :------ |
| `limit` | `number` |
#### Returns
`this`
[`VectorQuery`](VectorQuery.md)
#### Inherited from
[`QueryBase`](QueryBase.md).[`limit`](QueryBase.md#limit)
[QueryBase](QueryBase.md).[limit](QueryBase.md#limit)
***
#### Defined in
### nativeExecute()
[query.ts:129](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L129)
> `protected` **nativeExecute**(`options`?): `Promise`&lt;`RecordBatchIterator`&gt;
___
#### Parameters
### nativeExecute
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
**nativeExecute**(): `Promise`\<`RecordBatchIterator`\>
#### Returns
`Promise`&lt;`RecordBatchIterator`&gt;
`Promise`\<`RecordBatchIterator`\>
#### Inherited from
[`QueryBase`](QueryBase.md).[`nativeExecute`](QueryBase.md#nativeexecute)
[QueryBase](QueryBase.md).[nativeExecute](QueryBase.md#nativeexecute)
***
#### Defined in
### nprobes()
[query.ts:134](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L134)
> **nprobes**(`nprobes`): [`VectorQuery`](VectorQuery.md)
___
### nprobes
**nprobes**(`nprobes`): [`VectorQuery`](VectorQuery.md)
Set the number of partitions to search (probe)
@@ -314,17 +294,23 @@ you the desired recall.
#### Parameters
**nprobes**: `number`
| Name | Type |
| :------ | :------ |
| `nprobes` | `number` |
#### Returns
[`VectorQuery`](VectorQuery.md)
***
#### Defined in
### postfilter()
[query.ts:215](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L215)
> **postfilter**(): [`VectorQuery`](VectorQuery.md)
___
### postfilter
**postfilter**(): [`VectorQuery`](VectorQuery.md)
If this is called then filtering will happen after the vector search instead of
before.
@@ -347,16 +333,20 @@ Post filtering happens during the "refine stage" (described in more detail in
[`VectorQuery`](VectorQuery.md)
#### See
**`See`**
[VectorQuery#refineFactor](VectorQuery.md#refinefactor)). This means that setting a higher refine
factor can often help restore some of the results lost by post filtering.
***
#### Defined in
### refineFactor()
[query.ts:307](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L307)
> **refineFactor**(`refineFactor`): [`VectorQuery`](VectorQuery.md)
___
### refineFactor
**refineFactor**(`refineFactor`): [`VectorQuery`](VectorQuery.md)
A multiplier to control how many additional rows are taken during the refine step
@@ -388,17 +378,23 @@ distance between the query vector and the actual uncompressed vector.
#### Parameters
**refineFactor**: `number`
| Name | Type |
| :------ | :------ |
| `refineFactor` | `number` |
#### Returns
[`VectorQuery`](VectorQuery.md)
***
#### Defined in
### select()
[query.ts:282](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L282)
> **select**(`columns`): `this`
___
### select
**select**(`columns`): [`VectorQuery`](VectorQuery.md)
Return only the specified columns.
@@ -422,13 +418,15 @@ input to this method would be:
#### Parameters
**columns**: `string` \| `string`[] \| `Record`&lt;`string`, `string`&gt; \| `Map`&lt;`string`, `string`&gt;
| Name | Type |
| :------ | :------ |
| `columns` | `string`[] \| `Record`\<`string`, `string`\> \| `Map`\<`string`, `string`\> |
#### Returns
`this`
[`VectorQuery`](VectorQuery.md)
#### Example
**`Example`**
```ts
new Map([["combined", "a + b"], ["c", "c"]])
@@ -443,57 +441,61 @@ object insertion order is easy to get wrong and `Map` is more foolproof.
#### Inherited from
[`QueryBase`](QueryBase.md).[`select`](QueryBase.md#select)
[QueryBase](QueryBase.md).[select](QueryBase.md#select)
***
#### Defined in
### toArray()
[query.ts:108](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L108)
> **toArray**(`options`?): `Promise`&lt;`any`[]&gt;
___
### toArray
**toArray**(): `Promise`\<`unknown`[]\>
Collect the results as an array of objects.
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`&lt;`any`[]&gt;
`Promise`\<`unknown`[]\>
#### Inherited from
[`QueryBase`](QueryBase.md).[`toArray`](QueryBase.md#toarray)
[QueryBase](QueryBase.md).[toArray](QueryBase.md#toarray)
***
#### Defined in
### toArrow()
[query.ts:169](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L169)
> **toArrow**(`options`?): `Promise`&lt;`Table`&lt;`any`&gt;&gt;
___
### toArrow
**toArrow**(): `Promise`\<`Table`\<`any`\>\>
Collect the results as an Arrow
#### Parameters
**options?**: `Partial`&lt;`QueryExecutionOptions`&gt;
#### Returns
`Promise`&lt;`Table`&lt;`any`&gt;&gt;
`Promise`\<`Table`\<`any`\>\>
#### See
**`See`**
ArrowTable.
#### Inherited from
[`QueryBase`](QueryBase.md).[`toArrow`](QueryBase.md#toarrow)
[QueryBase](QueryBase.md).[toArrow](QueryBase.md#toarrow)
***
#### Defined in
### where()
[query.ts:160](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L160)
> **where**(`predicate`): `this`
___
### where
**where**(`predicate`): [`VectorQuery`](VectorQuery.md)
A filter statement to be applied to this query.
@@ -501,13 +503,15 @@ The filter should be supplied as an SQL query string. For example:
#### Parameters
**predicate**: `string`
| Name | Type |
| :------ | :------ |
| `predicate` | `string` |
#### Returns
`this`
[`VectorQuery`](VectorQuery.md)
#### Example
**`Example`**
```ts
x > 10
@@ -520,4 +524,8 @@ on the filter column(s).
#### Inherited from
[`QueryBase`](QueryBase.md).[`where`](QueryBase.md#where)
[QueryBase](QueryBase.md).[where](QueryBase.md#where)
#### Defined in
[query.ts:73](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/query.ts#L73)

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@@ -0,0 +1,111 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / [embedding](../modules/embedding.md) / OpenAIEmbeddingFunction
# Class: OpenAIEmbeddingFunction
[embedding](../modules/embedding.md).OpenAIEmbeddingFunction
An embedding function that automatically creates vector representation for a given column.
## Implements
- [`EmbeddingFunction`](../interfaces/embedding.EmbeddingFunction.md)\<`string`\>
## Table of contents
### Constructors
- [constructor](embedding.OpenAIEmbeddingFunction.md#constructor)
### Properties
- [\_modelName](embedding.OpenAIEmbeddingFunction.md#_modelname)
- [\_openai](embedding.OpenAIEmbeddingFunction.md#_openai)
- [sourceColumn](embedding.OpenAIEmbeddingFunction.md#sourcecolumn)
### Methods
- [embed](embedding.OpenAIEmbeddingFunction.md#embed)
## Constructors
### constructor
**new OpenAIEmbeddingFunction**(`sourceColumn`, `openAIKey`, `modelName?`): [`OpenAIEmbeddingFunction`](embedding.OpenAIEmbeddingFunction.md)
#### Parameters
| Name | Type | Default value |
| :------ | :------ | :------ |
| `sourceColumn` | `string` | `undefined` |
| `openAIKey` | `string` | `undefined` |
| `modelName` | `string` | `"text-embedding-ada-002"` |
#### Returns
[`OpenAIEmbeddingFunction`](embedding.OpenAIEmbeddingFunction.md)
#### Defined in
[embedding/openai.ts:22](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L22)
## Properties
### \_modelName
`Private` `Readonly` **\_modelName**: `string`
#### Defined in
[embedding/openai.ts:20](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L20)
___
### \_openai
`Private` `Readonly` **\_openai**: `OpenAI`
#### Defined in
[embedding/openai.ts:19](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L19)
___
### sourceColumn
**sourceColumn**: `string`
The name of the column that will be used as input for the Embedding Function.
#### Implementation of
[EmbeddingFunction](../interfaces/embedding.EmbeddingFunction.md).[sourceColumn](../interfaces/embedding.EmbeddingFunction.md#sourcecolumn)
#### Defined in
[embedding/openai.ts:61](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L61)
## Methods
### embed
**embed**(`data`): `Promise`\<`number`[][]\>
Creates a vector representation for the given values.
#### Parameters
| Name | Type |
| :------ | :------ |
| `data` | `string`[] |
#### Returns
`Promise`\<`number`[][]\>
#### Implementation of
[EmbeddingFunction](../interfaces/embedding.EmbeddingFunction.md).[embed](../interfaces/embedding.EmbeddingFunction.md#embed)
#### Defined in
[embedding/openai.ts:48](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/embedding/openai.ts#L48)

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@@ -1,27 +0,0 @@
[**@lancedb/lancedb**](../README.md) • **Docs**
***
[@lancedb/lancedb](../globals.md) / WriteMode
# Enumeration: WriteMode
Write mode for writing a table.
## Enumeration Members
### Append
> **Append**: `"Append"`
***
### Create
> **Create**: `"Create"`
***
### Overwrite
> **Overwrite**: `"Overwrite"`

View File

@@ -0,0 +1,43 @@
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / WriteMode
# Enumeration: WriteMode
Write mode for writing a table.
## Table of contents
### Enumeration Members
- [Append](WriteMode.md#append)
- [Create](WriteMode.md#create)
- [Overwrite](WriteMode.md#overwrite)
## Enumeration Members
### Append
**Append** = ``"Append"``
#### Defined in
native.d.ts:69
___
### Create
• **Create** = ``"Create"``
#### Defined in
native.d.ts:68
___
### Overwrite
• **Overwrite** = ``"Overwrite"``
#### Defined in
native.d.ts:70

View File

@@ -1,82 +0,0 @@
[**@lancedb/lancedb**](../README.md) • **Docs**
***
[@lancedb/lancedb](../globals.md) / connect
# Function: connect()
## connect(uri, opts)
> **connect**(`uri`, `opts`?): `Promise`&lt;[`Connection`](../classes/Connection.md)&gt;
Connect to a LanceDB instance at the given URI.
Accepted formats:
- `/path/to/database` - local database
- `s3://bucket/path/to/database` or `gs://bucket/path/to/database` - database on cloud storage
- `db://host:port` - remote database (LanceDB cloud)
### Parameters
**uri**: `string`
The uri of the database. If the database uri starts
with `db://` then it connects to a remote database.
**opts?**: `Partial`&lt;[`ConnectionOptions`](../interfaces/ConnectionOptions.md) \| `RemoteConnectionOptions`&gt;
### Returns
`Promise`&lt;[`Connection`](../classes/Connection.md)&gt;
### See
[ConnectionOptions](../interfaces/ConnectionOptions.md) for more details on the URI format.
### Examples
```ts
const conn = await connect("/path/to/database");
```
```ts
const conn = await connect(
"s3://bucket/path/to/database",
{storageOptions: {timeout: "60s"}
});
```
## connect(opts)
> **connect**(`opts`): `Promise`&lt;[`Connection`](../classes/Connection.md)&gt;
Connect to a LanceDB instance at the given URI.
Accepted formats:
- `/path/to/database` - local database
- `s3://bucket/path/to/database` or `gs://bucket/path/to/database` - database on cloud storage
- `db://host:port` - remote database (LanceDB cloud)
### Parameters
**opts**: `Partial`&lt;[`ConnectionOptions`](../interfaces/ConnectionOptions.md) \| `RemoteConnectionOptions`&gt; & `object`
### Returns
`Promise`&lt;[`Connection`](../classes/Connection.md)&gt;
### See
[ConnectionOptions](../interfaces/ConnectionOptions.md) for more details on the URI format.
### Example
```ts
const conn = await connect({
uri: "/path/to/database",
storageOptions: {timeout: "60s"}
});
```

View File

@@ -1,51 +0,0 @@
[**@lancedb/lancedb**](README.md) • **Docs**
***
# @lancedb/lancedb
## Namespaces
- [embedding](namespaces/embedding/README.md)
## Enumerations
- [WriteMode](enumerations/WriteMode.md)
## Classes
- [Connection](classes/Connection.md)
- [Index](classes/Index.md)
- [MakeArrowTableOptions](classes/MakeArrowTableOptions.md)
- [Query](classes/Query.md)
- [QueryBase](classes/QueryBase.md)
- [RecordBatchIterator](classes/RecordBatchIterator.md)
- [Table](classes/Table.md)
- [VectorColumnOptions](classes/VectorColumnOptions.md)
- [VectorQuery](classes/VectorQuery.md)
## Interfaces
- [AddColumnsSql](interfaces/AddColumnsSql.md)
- [AddDataOptions](interfaces/AddDataOptions.md)
- [ColumnAlteration](interfaces/ColumnAlteration.md)
- [ConnectionOptions](interfaces/ConnectionOptions.md)
- [CreateTableOptions](interfaces/CreateTableOptions.md)
- [ExecutableQuery](interfaces/ExecutableQuery.md)
- [IndexConfig](interfaces/IndexConfig.md)
- [IndexMetadata](interfaces/IndexMetadata.md)
- [IndexOptions](interfaces/IndexOptions.md)
- [IndexStatistics](interfaces/IndexStatistics.md)
- [IvfPqOptions](interfaces/IvfPqOptions.md)
- [TableNamesOptions](interfaces/TableNamesOptions.md)
- [UpdateOptions](interfaces/UpdateOptions.md)
- [WriteOptions](interfaces/WriteOptions.md)
## Type Aliases
- [Data](type-aliases/Data.md)
## Functions
- [connect](functions/connect.md)
- [makeArrowTable](functions/makeArrowTable.md)

View File

@@ -1,26 +1,37 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / AddColumnsSql
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / AddColumnsSql
# Interface: AddColumnsSql
A definition of a new column to add to a table.
## Table of contents
### Properties
- [name](AddColumnsSql.md#name)
- [valueSql](AddColumnsSql.md#valuesql)
## Properties
### name
> **name**: `string`
**name**: `string`
The name of the new column.
***
#### Defined in
native.d.ts:43
___
### valueSql
> **valueSql**: `string`
**valueSql**: `string`
The values to populate the new column with, as a SQL expression.
The expression can reference other columns in the table.
#### Defined in
native.d.ts:48

View File

@@ -1,19 +1,25 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / AddDataOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / AddDataOptions
# Interface: AddDataOptions
Options for adding data to a table.
## Table of contents
### Properties
- [mode](AddDataOptions.md#mode)
## Properties
### mode
> **mode**: `"append"` \| `"overwrite"`
**mode**: ``"append"`` \| ``"overwrite"``
If "append" (the default) then the new data will be added to the table
If "overwrite" then the new data will replace the existing data in the table.
#### Defined in
[table.ts:36](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L36)

View File

@@ -1,8 +1,4 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / ColumnAlteration
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / ColumnAlteration
# Interface: ColumnAlteration
@@ -11,30 +7,50 @@ A definition of a column alteration. The alteration changes the column at
and to have the data type `data_type`. At least one of `rename` or `nullable`
must be provided.
## Table of contents
### Properties
- [nullable](ColumnAlteration.md#nullable)
- [path](ColumnAlteration.md#path)
- [rename](ColumnAlteration.md#rename)
## Properties
### nullable?
### nullable
> `optional` **nullable**: `boolean`
`Optional` **nullable**: `boolean`
Set the new nullability. Note that a nullable column cannot be made non-nullable.
***
#### Defined in
native.d.ts:38
___
### path
> **path**: `string`
**path**: `string`
The path to the column to alter. This is a dot-separated path to the column.
If it is a top-level column then it is just the name of the column. If it is
a nested column then it is the path to the column, e.g. "a.b.c" for a column
`c` nested inside a column `b` nested inside a column `a`.
***
#### Defined in
### rename?
native.d.ts:31
> `optional` **rename**: `string`
___
### rename
`Optional` **rename**: `string`
The new name of the column. If not provided then the name will not be changed.
This must be distinct from the names of all other columns in the table.
#### Defined in
native.d.ts:36

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@@ -1,16 +1,40 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / ConnectionOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / ConnectionOptions
# Interface: ConnectionOptions
## Table of contents
### Properties
- [apiKey](ConnectionOptions.md#apikey)
- [hostOverride](ConnectionOptions.md#hostoverride)
- [readConsistencyInterval](ConnectionOptions.md#readconsistencyinterval)
## Properties
### readConsistencyInterval?
### apiKey
> `optional` **readConsistencyInterval**: `number`
`Optional` **apiKey**: `string`
#### Defined in
native.d.ts:51
___
### hostOverride
`Optional` **hostOverride**: `string`
#### Defined in
native.d.ts:52
___
### readConsistencyInterval
`Optional` **readConsistencyInterval**: `number`
(For LanceDB OSS only): The interval, in seconds, at which to check for
updates to the table from other processes. If None, then consistency is not
@@ -22,12 +46,6 @@ has passed since the last check, then the table will be checked for updates.
Note: this consistency only applies to read operations. Write operations are
always consistent.
***
#### Defined in
### storageOptions?
> `optional` **storageOptions**: `Record`&lt;`string`, `string`&gt;
(For LanceDB OSS only): configuration for object storage.
The available options are described at https://lancedb.github.io/lancedb/guides/storage/
native.d.ts:64

View File

@@ -1,31 +1,32 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / CreateTableOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / CreateTableOptions
# Interface: CreateTableOptions
## Table of contents
### Properties
- [existOk](CreateTableOptions.md#existok)
- [mode](CreateTableOptions.md#mode)
## Properties
### embeddingFunction?
> `optional` **embeddingFunction**: [`EmbeddingFunctionConfig`](../namespaces/embedding/interfaces/EmbeddingFunctionConfig.md)
***
### existOk
> **existOk**: `boolean`
**existOk**: `boolean`
If this is true and the table already exists and the mode is "create"
then no error will be raised.
***
#### Defined in
[connection.ts:35](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L35)
___
### mode
> **mode**: `"overwrite"` \| `"create"`
**mode**: ``"overwrite"`` \| ``"create"``
The mode to use when creating the table.
@@ -35,31 +36,6 @@ happen. Any provided data will be ignored.
If this is set to "overwrite" then any existing table will be replaced.
***
#### Defined in
### schema?
> `optional` **schema**: `SchemaLike`
***
### storageOptions?
> `optional` **storageOptions**: `Record`&lt;`string`, `string`&gt;
Configuration for object storage.
Options already set on the connection will be inherited by the table,
but can be overridden here.
The available options are described at https://lancedb.github.io/lancedb/guides/storage/
***
### useLegacyFormat?
> `optional` **useLegacyFormat**: `boolean`
If true then data files will be written with the legacy format
The default is true while the new format is in beta
[connection.ts:30](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L30)

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@@ -1,8 +1,4 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / ExecutableQuery
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / ExecutableQuery
# Interface: ExecutableQuery

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@@ -1,36 +1,39 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / IndexConfig
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / IndexConfig
# Interface: IndexConfig
A description of an index currently configured on a column
## Table of contents
### Properties
- [columns](IndexConfig.md#columns)
- [indexType](IndexConfig.md#indextype)
## Properties
### columns
> **columns**: `string`[]
**columns**: `string`[]
The columns in the index
Currently this is always an array of size 1. In the future there may
Currently this is always an array of size 1. In the future there may
be more columns to represent composite indices.
***
#### Defined in
native.d.ts:16
___
### indexType
> **indexType**: `string`
**indexType**: `string`
The type of the index
***
#### Defined in
### name
> **name**: `string`
The name of the index
native.d.ts:9

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@@ -1,19 +0,0 @@
[**@lancedb/lancedb**](../README.md) • **Docs**
***
[@lancedb/lancedb](../globals.md) / IndexMetadata
# Interface: IndexMetadata
## Properties
### indexType?
> `optional` **indexType**: `string`
***
### metricType?
> `optional` **metricType**: `string`

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@@ -1,16 +1,19 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / IndexOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / IndexOptions
# Interface: IndexOptions
## Table of contents
### Properties
- [config](IndexOptions.md#config)
- [replace](IndexOptions.md#replace)
## Properties
### config?
### config
> `optional` **config**: [`Index`](../classes/Index.md)
`Optional` **config**: [`Index`](../classes/Index.md)
Advanced index configuration
@@ -22,11 +25,15 @@ See the static methods on Index for details on the various index types.
If this is not supplied then column data type(s) and column statistics
will be used to determine the most useful kind of index to create.
***
#### Defined in
### replace?
[indices.ts:192](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L192)
> `optional` **replace**: `boolean`
___
### replace
`Optional` **replace**: `boolean`
Whether to replace the existing index
@@ -35,3 +42,7 @@ and the same name, then an error will be returned. This is true even if
that index is out of date.
The default is true
#### Defined in
[indices.ts:202](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L202)

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@@ -1,39 +0,0 @@
[**@lancedb/lancedb**](../README.md) • **Docs**
***
[@lancedb/lancedb](../globals.md) / IndexStatistics
# Interface: IndexStatistics
## Properties
### indexType?
> `optional` **indexType**: `string`
The type of the index
***
### indices
> **indices**: [`IndexMetadata`](IndexMetadata.md)[]
The metadata for each index
***
### numIndexedRows
> **numIndexedRows**: `number`
The number of rows indexed by the index
***
### numUnindexedRows
> **numUnindexedRows**: `number`
The number of rows not indexed

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@@ -1,18 +1,24 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / IvfPqOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / IvfPqOptions
# Interface: IvfPqOptions
Options to create an `IVF_PQ` index
## Table of contents
### Properties
- [distanceType](IvfPqOptions.md#distancetype)
- [maxIterations](IvfPqOptions.md#maxiterations)
- [numPartitions](IvfPqOptions.md#numpartitions)
- [numSubVectors](IvfPqOptions.md#numsubvectors)
- [sampleRate](IvfPqOptions.md#samplerate)
## Properties
### distanceType?
### distanceType
> `optional` **distanceType**: `"l2"` \| `"cosine"` \| `"dot"`
`Optional` **distanceType**: ``"l2"`` \| ``"cosine"`` \| ``"dot"``
Distance type to use to build the index.
@@ -46,11 +52,15 @@ never be returned from a vector search.
distance has a range of (-∞, ∞). If the vectors are normalized (i.e. their
L2 norm is 1), then dot distance is equivalent to the cosine distance.
***
#### Defined in
### maxIterations?
[indices.ts:83](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L83)
> `optional` **maxIterations**: `number`
___
### maxIterations
• `Optional` **maxIterations**: `number`
Max iteration to train IVF kmeans.
@@ -62,11 +72,15 @@ iterations have diminishing returns.
The default value is 50.
***
#### Defined in
### numPartitions?
[indices.ts:96](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L96)
> `optional` **numPartitions**: `number`
___
### numPartitions
• `Optional` **numPartitions**: `number`
The number of IVF partitions to create.
@@ -78,11 +92,15 @@ If this value is too large then the first part of the search (picking the
right partition) will be slow. If this value is too small then the second
part of the search (searching within a partition) will be slow.
***
#### Defined in
### numSubVectors?
[indices.ts:32](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L32)
> `optional` **numSubVectors**: `number`
___
### numSubVectors
• `Optional` **numSubVectors**: `number`
Number of sub-vectors of PQ.
@@ -97,11 +115,15 @@ us to use efficient SIMD instructions.
If the dimension is not visible by 8 then we use 1 subvector. This is not ideal and
will likely result in poor performance.
***
#### Defined in
### sampleRate?
[indices.ts:48](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L48)
> `optional` **sampleRate**: `number`
___
### sampleRate
• `Optional` **sampleRate**: `number`
The number of vectors, per partition, to sample when training IVF kmeans.
@@ -116,3 +138,7 @@ Increasing this value might improve the quality of the index but in most cases t
default should be sufficient.
The default value is 256.
#### Defined in
[indices.ts:113](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/indices.ts#L113)

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@@ -1,27 +1,38 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / TableNamesOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / TableNamesOptions
# Interface: TableNamesOptions
## Table of contents
### Properties
- [limit](TableNamesOptions.md#limit)
- [startAfter](TableNamesOptions.md#startafter)
## Properties
### limit?
### limit
> `optional` **limit**: `number`
`Optional` **limit**: `number`
An optional limit to the number of results to return.
***
#### Defined in
### startAfter?
[connection.ts:48](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L48)
> `optional` **startAfter**: `string`
___
### startAfter
`Optional` **startAfter**: `string`
If present, only return names that come lexicographically after the
supplied value.
This can be combined with limit to implement pagination by setting this to
the last table name from the previous page.
#### Defined in
[connection.ts:46](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/connection.ts#L46)

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@@ -1,16 +1,18 @@
[**@lancedb/lancedb**](../README.md) **Docs**
***
[@lancedb/lancedb](../globals.md) / UpdateOptions
[@lancedb/lancedb](../README.md) / [Exports](../modules.md) / UpdateOptions
# Interface: UpdateOptions
## Table of contents
### Properties
- [where](UpdateOptions.md#where)
## Properties
### where
> **where**: `string`
**where**: `string`
A filter that limits the scope of the update.
@@ -20,3 +22,7 @@ Only rows that satisfy the expression will be updated.
For example, this could be 'my_col == 0' to replace all instances
of 0 in a column with some other default value.
#### Defined in
[table.ts:50](https://github.com/lancedb/lancedb/blob/9d178c7/nodejs/lancedb/table.ts#L50)

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