Bump version: 0.30.0-beta.6 → 0.30.0

## Summary
- Update all 14 lance crates from `3.0.0-rc.3` (git source) to `3.0.0`
(crates.io release)
- Remove git/tag source references since 3.0.0 is published on crates.io

## Test plan
- [x] `cargo check --features remote --tests --examples` passes
- [x] `cargo clippy --features remote --tests --examples` passes
- [ ] CI passes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.bumpversion.toml

@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "0.27.0-beta.3"
+current_version = "0.27.0-beta.5"
 parse = """(?x)
     (?P<major>0|[1-9]\\d*)\\.
     (?P<minor>0|[1-9]\\d*)\\.

.github/workflows/dev.yml

@@ -15,7 +15,7 @@ jobs:
     name: Label PR
     runs-on: ubuntu-latest
     steps:
-      - uses: srvaroa/labeler@master
+      - uses: srvaroa/labeler@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   commitlint:
@@ -24,7 +24,7 @@ jobs:
     name: Verify PR title / description conforms to semantic-release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version: "18"
       # These rules are disabled because Github will always ensure there
@@ -47,7 +47,7 @@ jobs:
 
             ${{ github.event.pull_request.body }}
       - if: failure()
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         with:
           script: |
             const message = `**ACTION NEEDED**

.github/workflows/docs.yml

@@ -53,7 +53,7 @@ jobs:
           python -m pip install --extra-index-url https://pypi.fury.io/lance-format/ --extra-index-url https://pypi.fury.io/lancedb/ -e .
           python -m pip install --extra-index-url https://pypi.fury.io/lance-format/ --extra-index-url https://pypi.fury.io/lancedb/ -r ../docs/requirements.txt
       - name: Set up node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: 'npm'
@@ -68,7 +68,7 @@ jobs:
         run: |
           PYTHONPATH=. mkdocs build
       - name: Setup Pages
-        uses: actions/configure-pages@v2
+        uses: actions/configure-pages@v5
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with:

.github/workflows/nodejs.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths:
       - Cargo.toml
+      - Cargo.lock
       - nodejs/**
       - rust/**
       - docs/src/js/**
@@ -37,7 +38,7 @@ jobs:
       with:
         fetch-depth: 0
         lfs: true
-    - uses: actions/setup-node@v3
+    - uses: actions/setup-node@v4
       with:
         node-version: 20
         cache: 'npm'
@@ -77,7 +78,7 @@ jobs:
       with:
         fetch-depth: 0
         lfs: true
-    - uses: actions/setup-node@v3
+    - uses: actions/setup-node@v4
       name: Setup Node.js 20 for build
       with:
         # @napi-rs/cli v3 requires Node >= 20.12 (via @inquirer/prompts@8).
@@ -94,7 +95,7 @@ jobs:
       run: |
         npm ci --include=optional
         npm run build:debug -- --profile ci
-    - uses: actions/setup-node@v3
+    - uses: actions/setup-node@v4
       name: Setup Node.js ${{ matrix.node-version }} for test
       with:
         node-version: ${{ matrix.node-version }}
@@ -143,7 +144,7 @@ jobs:
       with:
         fetch-depth: 0
         lfs: true
-    - uses: actions/setup-node@v3
+    - uses: actions/setup-node@v4
       with:
         node-version: 20
         cache: 'npm'

.github/workflows/npm-publish.yml

@@ -19,6 +19,7 @@ on:
     paths:
       - .github/workflows/npm-publish.yml
       - Cargo.toml # Change in dependency frequently breaks builds
+      - Cargo.lock
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -124,7 +125,12 @@ jobs:
             pre_build: |-
               set -e &&
               apt-get update &&
-              apt-get install -y protobuf-compiler pkg-config
+              apt-get install -y protobuf-compiler pkg-config &&
+              # The base image (manylinux2014-cross) sets TARGET_CC to the old
+              # GCC 4.8 cross-compiler. aws-lc-sys checks TARGET_CC before CC,
+              # so it picks up GCC even though the napi-rs image sets CC=clang.
+              # Override to use the image's clang-18 which supports -fuse-ld=lld.
+              export TARGET_CC=clang TARGET_CXX=clang++
           - target: x86_64-unknown-linux-musl
             # This one seems to need some extra memory
             host: ubuntu-2404-8x-x64
@@ -144,9 +150,10 @@ jobs:
               set -e &&
               apt-get update &&
               apt-get install -y protobuf-compiler pkg-config &&
-              # https://github.com/aws/aws-lc-rs/issues/737#issuecomment-2725918627
-              ln -s /usr/aarch64-unknown-linux-gnu/lib/gcc/aarch64-unknown-linux-gnu/4.8.5/crtbeginS.o /usr/aarch64-unknown-linux-gnu/aarch64-unknown-linux-gnu/sysroot/usr/lib/crtbeginS.o &&
-              ln -s /usr/aarch64-unknown-linux-gnu/lib/gcc /usr/aarch64-unknown-linux-gnu/aarch64-unknown-linux-gnu/sysroot/usr/lib/gcc &&
+              export TARGET_CC=clang TARGET_CXX=clang++ &&
+              # The manylinux2014 sysroot has glibc 2.17 headers which lack
+              # AT_HWCAP2 (added in Linux 3.17). Define it for aws-lc-sys.
+              export CFLAGS="$CFLAGS -DAT_HWCAP2=26" &&
               rustup target add aarch64-unknown-linux-gnu
           - target: aarch64-unknown-linux-musl
             host: ubuntu-2404-8x-x64
@@ -266,7 +273,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             host: ubuntu-latest
           - target: aarch64-unknown-linux-gnu
-            host: buildjet-16vcpu-ubuntu-2204-arm
+            host: ubuntu-2404-8x-arm64
         node:
           - '20'
     runs-on: ${{ matrix.settings.host }}

.github/workflows/pypi-publish.yml

@@ -9,6 +9,7 @@ on:
     paths:
       - .github/workflows/pypi-publish.yml
       - Cargo.toml # Change in dependency frequently breaks builds
+      - Cargo.lock
 
 env:
   PIP_EXTRA_INDEX_URL: "https://pypi.fury.io/lance-format/ https://pypi.fury.io/lancedb/"

.github/workflows/python.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths:
       - Cargo.toml
+      - Cargo.lock
       - python/**
       - rust/**
       - .github/workflows/python.yml

.github/workflows/rust.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths:
       - Cargo.toml
+      - Cargo.lock
       - rust/**
       - .github/workflows/rust.yml
 

Cargo.toml

@@ -15,20 +15,20 @@ categories = ["database-implementations"]
 rust-version = "1.91.0"
 
 [workspace.dependencies]
-lance = { "version" = "=3.0.0-rc.2", default-features = false, "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-core = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-datagen = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-file = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-io = { "version" = "=3.0.0-rc.2", default-features = false, "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-index = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-linalg = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-namespace = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-namespace-impls = { "version" = "=3.0.0-rc.2", default-features = false, "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-table = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-testing = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-datafusion = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-encoding = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
-lance-arrow = { "version" = "=3.0.0-rc.2", "tag" = "v3.0.0-rc.2", "git" = "https://github.com/lance-format/lance.git" }
+lance = { version = "=3.0.0", default-features = false }
+lance-core = { version = "=3.0.0" }
+lance-datagen = { version = "=3.0.0" }
+lance-file = { version = "=3.0.0" }
+lance-io = { version = "=3.0.0", default-features = false }
+lance-index = { version = "=3.0.0" }
+lance-linalg = { version = "=3.0.0" }
+lance-namespace = { version = "=3.0.0" }
+lance-namespace-impls = { version = "=3.0.0", default-features = false }
+lance-table = { version = "=3.0.0" }
+lance-testing = { version = "=3.0.0" }
+lance-datafusion = { version = "=3.0.0" }
+lance-encoding = { version = "=3.0.0" }
+lance-arrow = { version = "=3.0.0" }
 ahash = "0.8"
 # Note that this one does not include pyarrow
 arrow = { version = "57.2", optional = false }

docker-compose.yml

@@ -1,7 +1,7 @@
 version: "3.9"
 services:
   localstack:
-    image: localstack/localstack:3.3
+    image: localstack/localstack:4.0
     ports:
       - 4566:4566
     environment:

dockerfiles/Dockerfile

@@ -1,27 +1,27 @@
-#Simple base dockerfile that supports basic dependencies required to run lance with FTS and Hybrid Search
-#Usage docker build -t lancedb:latest -f Dockerfile .
-FROM python:3.10-slim-buster
+# Simple base dockerfile that supports basic dependencies required to run lance with FTS and Hybrid Search
+# Usage: docker build -t lancedb:latest -f Dockerfile .
+FROM python:3.12-slim-bookworm
 
-# Install Rust
-RUN apt-get update && apt-get install -y curl build-essential && \
-  curl https://sh.rustup.rs -sSf | sh -s -- -y
-
-# Set the environment variable for Rust
-ENV PATH="/root/.cargo/bin:${PATH}"
-
-# Install protobuf compiler
-RUN apt-get install -y protobuf-compiler && \
+# Install build dependencies in a single layer
+RUN apt-get update && \
+  apt-get install -y --no-install-recommends \
+    curl \
+    build-essential \
+    protobuf-compiler \
+    git \
+    ca-certificates && \
   apt-get clean && \
   rm -rf /var/lib/apt/lists/*
 
-RUN apt-get -y update &&\
-  apt-get -y upgrade && \
-  apt-get -y install git
+# Install Rust (pinned installer, non-interactive)
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable --profile minimal
 
+# Set the environment variable for Rust
+ENV PATH="/root/.cargo/bin:${PATH}"
 
 # Verify installations
 RUN python --version && \
   rustc --version && \
   protoc --version
 
-RUN pip install tantivy lancedb
+RUN pip install --no-cache-dir tantivy lancedb

docs/mkdocs.yml

@@ -52,14 +52,21 @@ plugins:
           options:
             docstring_style: numpy
             heading_level: 3
-            show_source: true
-            show_symbol_type_in_heading: true
             show_signature_annotations: true
             show_root_heading: true
+            show_docstring_examples: true
+            show_docstring_attributes: false
+            show_docstring_other_parameters: true
+            show_symbol_type_heading: true
+            show_labels: false
+            show_if_no_docstring: true
+            show_source: false
             members_order: source
             docstring_section_style: list
             signature_crossrefs: true
             separate_signature: true
+            filters:
+              - "!^_"
           import:
             # for cross references
             - https://arrow.apache.org/docs/objects.inv
@@ -113,7 +120,7 @@ markdown_extensions:
       emoji_index: !!python/name:material.extensions.emoji.twemoji
       emoji_generator: !!python/name:material.extensions.emoji.to_svg
   - markdown.extensions.toc:
-      toc_depth: 3
+      toc_depth: 4
       permalink: true
       permalink_title: Anchor link to this section
 

docs/requirements.txt

@@ -1,9 +1,9 @@
 mkdocs==1.5.3
 mkdocs-jupyter==0.24.1
 mkdocs-material==9.5.3
-mkdocs-autorefs<=1.0
+mkdocs-autorefs>=0.5,<=1.0
 mkdocstrings[python]==0.25.2
-griffe
-mkdocs-render-swagger-plugin
-pydantic
-mkdocs-redirects
+griffe>=0.40,<1.0
+mkdocs-render-swagger-plugin>=0.1.0
+pydantic>=2.0,<3.0
+mkdocs-redirects>=1.2.0

docs/src/java/java.md

@@ -14,7 +14,7 @@ Add the following dependency to your `pom.xml`:
 <dependency>
     <groupId>com.lancedb</groupId>
     <artifactId>lancedb-core</artifactId>
-    <version>0.27.0-beta.3</version>
+    <version>0.27.0-beta.5</version>
 </dependency>
 ```
 

docs/src/js/classes/Table.md

@@ -71,11 +71,12 @@ 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.
+* **newColumnTransforms**: `Field`<`any`> \| `Field`<`any`>[] \| `Schema`<`any`> \| [`AddColumnsSql`](../interfaces/AddColumnsSql.md)[]
+    Either:
+    - An array of objects with column names and SQL expressions to calculate values
+    - A single Arrow Field defining one column with its data type (column will be initialized with null values)
+    - An array of Arrow Fields defining columns with their data types (columns will be initialized with null values)
+    - An Arrow Schema defining columns with their data types (columns will be initialized with null values)
 
 #### Returns
 
@@ -484,19 +485,7 @@ Modeled after ``VACUUM`` in PostgreSQL.
  - 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
+ The frequency an application should 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

docs/src/js/interfaces/OptimizeOptions.md

@@ -37,3 +37,12 @@ tbl.optimize({cleanupOlderThan: new Date()});
 ```ts
 deleteUnverified: boolean;
 ```
+
+Because they may be part of an in-progress transaction, files newer than
+7 days old are not deleted by default. If you are sure that there are no
+in-progress transactions, then you can set this to true to delete all
+files older than `cleanupOlderThan`.
+
+**WARNING**: This should only be set to true if you can guarantee that
+no other process is currently working on this dataset. Otherwise the
+dataset could be put into a corrupted state.

java/README.md

@@ -1,4 +1,4 @@
-# LanceDB Java SDK
+# LanceDB Java Enterprise Client
 
 ## Configuration and Initialization
 

java/lancedb-core/pom.xml

@@ -8,7 +8,7 @@
     <parent>
       <groupId>com.lancedb</groupId>
       <artifactId>lancedb-parent</artifactId>
-      <version>0.27.0-beta.3</version>
+      <version>0.27.0-beta.5</version>
       <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -56,21 +56,21 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-slf4j2-impl</artifactId>
-            <version>2.24.3</version>
+            <version>2.25.3</version>
             <scope>test</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.24.3</version>
+            <version>2.25.3</version>
             <scope>test</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>2.24.3</version>
+            <version>2.25.3</version>
             <scope>test</scope>
         </dependency>
     </dependencies>

java/pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.lancedb</groupId>
     <artifactId>lancedb-parent</artifactId>
-    <version>0.27.0-beta.3</version>
+    <version>0.27.0-beta.5</version>
     <packaging>pom</packaging>
     <name>${project.artifactId}</name>
     <description>LanceDB Java SDK Parent POM</description>
@@ -111,7 +111,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
-                <version>2.2.1</version>
+                <version>3.3.1</version>
                 <executions>
                     <execution>
                         <id>attach-sources</id>
@@ -124,7 +124,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>2.9.1</version>
+                <version>3.11.2</version>
                 <executions>
                     <execution>
                         <id>attach-javadocs</id>
@@ -178,15 +178,15 @@
             <plugins>
                 <plugin>
                     <artifactId>maven-clean-plugin</artifactId>
-                    <version>3.1.0</version>
+                    <version>3.4.1</version>
                 </plugin>
                 <plugin>
                     <artifactId>maven-resources-plugin</artifactId>
-                    <version>3.0.2</version>
+                    <version>3.3.1</version>
                 </plugin>
                 <plugin>
                     <artifactId>maven-compiler-plugin</artifactId>
-                    <version>3.8.1</version>
+                    <version>3.14.0</version>
                     <configuration>
                         <compilerArgs>
                             <arg>-h</arg>
@@ -205,11 +205,11 @@
                 </plugin>
                 <plugin>
                     <artifactId>maven-jar-plugin</artifactId>
-                    <version>3.0.2</version>
+                    <version>3.4.2</version>
                 </plugin>
                 <plugin>
                     <artifactId>maven-install-plugin</artifactId>
-                    <version>2.5.2</version>
+                    <version>3.1.3</version>
                 </plugin>
                 <plugin>
                     <groupId>com.diffplug.spotless</groupId>
@@ -327,7 +327,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>1.5</version>
+                        <version>3.2.7</version>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>

nodejs/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "lancedb-nodejs"
 edition.workspace = true
-version = "0.27.0-beta.3"
+version = "0.27.0-beta.5"
 license.workspace = true
 description.workspace = true
 repository.workspace = true
@@ -25,12 +25,12 @@ napi = { version = "3.8.3", default-features = false, features = [
 ] }
 napi-derive = "3.5.2"
 # Prevent dynamic linking of lzma, which comes from datafusion
-lzma-sys = { version = "*", features = ["static"] }
+lzma-sys = { version = "0.1", features = ["static"] }
 log.workspace = true
 
-# Workaround for build failure until we can fix it.
-aws-lc-sys = "=0.28.0"
-aws-lc-rs = "=1.13.0"
+# Pin to resolve build failures; update periodically for security patches.
+aws-lc-sys = "=0.38.0"
+aws-lc-rs = "=1.16.1"
 
 [build-dependencies]
 napi-build = "2.3.1"

nodejs/__test__/arrow.test.ts

@@ -63,6 +63,7 @@ describe.each([arrow15, arrow16, arrow17, arrow18])(
       tableFromIPC,
       DataType,
       Dictionary,
+      Uint8: ArrowUint8,
       // biome-ignore lint/suspicious/noExplicitAny: <explanation>
     } = <any>arrow;
     type Schema = ApacheArrow["Schema"];
@@ -362,6 +363,38 @@ describe.each([arrow15, arrow16, arrow17, arrow18])(
         ).toEqual(new Float64().toString());
       });
 
+      it("will infer FixedSizeList<Float32> from Float32Array values", async function () {
+        const table = makeArrowTable([
+          { id: "a", vector: new Float32Array([0.1, 0.2, 0.3]) },
+          { id: "b", vector: new Float32Array([0.4, 0.5, 0.6]) },
+        ]);
+
+        expect(DataType.isFixedSizeList(table.getChild("vector")?.type)).toBe(
+          true,
+        );
+        const vectorType = table.getChild("vector")?.type;
+        expect(vectorType.listSize).toBe(3);
+        expect(vectorType.children[0].type.toString()).toEqual(
+          new Float32().toString(),
+        );
+      });
+
+      it("will infer FixedSizeList<Uint8> from Uint8Array values", async function () {
+        const table = makeArrowTable([
+          { id: "a", vector: new Uint8Array([1, 2, 3]) },
+          { id: "b", vector: new Uint8Array([4, 5, 6]) },
+        ]);
+
+        expect(DataType.isFixedSizeList(table.getChild("vector")?.type)).toBe(
+          true,
+        );
+        const vectorType = table.getChild("vector")?.type;
+        expect(vectorType.listSize).toBe(3);
+        expect(vectorType.children[0].type.toString()).toEqual(
+          new ArrowUint8().toString(),
+        );
+      });
+
       it("will use dictionary encoded strings if asked", async function () {
         const table = makeArrowTable([{ str: "hello" }]);
         expect(DataType.isUtf8(table.getChild("str")?.type)).toBe(true);

nodejs/__test__/table.test.ts

@@ -1259,6 +1259,98 @@ describe("schema evolution", function () {
     expect(await table.schema()).toEqual(expectedSchema);
   });
 
+  it("can add columns with schema for explicit data types", async function () {
+    const con = await connect(tmpDir.name);
+    const table = await con.createTable("vectors", [
+      { id: 1n, vector: [0.1, 0.2] },
+    ]);
+
+    // Define schema for new columns with explicit data types
+    // Note: All columns must be nullable when using addColumns with Schema
+    // because they are initially populated with null values
+    const newColumnsSchema = new Schema([
+      new Field("price", new Float64(), true),
+      new Field("category", new Utf8(), true),
+      new Field("rating", new Int32(), true),
+    ]);
+
+    const result = await table.addColumns(newColumnsSchema);
+    expect(result).toHaveProperty("version");
+    expect(result.version).toBe(2);
+
+    const expectedSchema = new Schema([
+      new Field("id", new Int64(), true),
+      new Field(
+        "vector",
+        new FixedSizeList(2, new Field("item", new Float32(), true)),
+        true,
+      ),
+      new Field("price", new Float64(), true),
+      new Field("category", new Utf8(), true),
+      new Field("rating", new Int32(), true),
+    ]);
+    expect(await table.schema()).toEqual(expectedSchema);
+
+    // Verify that new columns are populated with null values
+    const results = await table.query().toArray();
+    expect(results).toHaveLength(1);
+    expect(results[0].price).toBeNull();
+    expect(results[0].category).toBeNull();
+    expect(results[0].rating).toBeNull();
+  });
+
+  it("can add a single column using Field", async function () {
+    const con = await connect(tmpDir.name);
+    const table = await con.createTable("vectors", [
+      { id: 1n, vector: [0.1, 0.2] },
+    ]);
+
+    // Add a single field
+    const priceField = new Field("price", new Float64(), true);
+    const result = await table.addColumns(priceField);
+    expect(result).toHaveProperty("version");
+    expect(result.version).toBe(2);
+
+    const expectedSchema = new Schema([
+      new Field("id", new Int64(), true),
+      new Field(
+        "vector",
+        new FixedSizeList(2, new Field("item", new Float32(), true)),
+        true,
+      ),
+      new Field("price", new Float64(), true),
+    ]);
+    expect(await table.schema()).toEqual(expectedSchema);
+  });
+
+  it("can add multiple columns using array of Fields", async function () {
+    const con = await connect(tmpDir.name);
+    const table = await con.createTable("vectors", [
+      { id: 1n, vector: [0.1, 0.2] },
+    ]);
+
+    // Add multiple fields as array
+    const fields = [
+      new Field("price", new Float64(), true),
+      new Field("category", new Utf8(), true),
+    ];
+    const result = await table.addColumns(fields);
+    expect(result).toHaveProperty("version");
+    expect(result.version).toBe(2);
+
+    const expectedSchema = new Schema([
+      new Field("id", new Int64(), true),
+      new Field(
+        "vector",
+        new FixedSizeList(2, new Field("item", new Float32(), true)),
+        true,
+      ),
+      new Field("price", new Float64(), true),
+      new Field("category", new Utf8(), true),
+    ]);
+    expect(await table.schema()).toEqual(expectedSchema);
+  });
+
   it("can alter the columns in the schema", async function () {
     const con = await connect(tmpDir.name);
     const schema = new Schema([
@@ -2204,3 +2296,36 @@ describe("when creating an empty table", () => {
     expect((actualSchema.fields[1].type as Float64).precision).toBe(2);
   });
 });
+
+// Ensure we can create float32 arrays without using Arrow
+// by utilizing native JS TypedArray support
+//
+// https://github.com/lancedb/lancedb/issues/3115
+describe("when creating a table with Float32Array vectors", () => {
+  let tmpDir: tmp.DirResult;
+  beforeEach(() => {
+    tmpDir = tmp.dirSync({ unsafeCleanup: true });
+  });
+  afterEach(() => {
+    tmpDir.removeCallback();
+  });
+
+  it("should persist Float32Array as FixedSizeList<Float32> in the LanceDB schema", async () => {
+    const db = await connect(tmpDir.name);
+    const table = await db.createTable("test", [
+      { id: "a", vector: new Float32Array([0.1, 0.2, 0.3]) },
+      { id: "b", vector: new Float32Array([0.4, 0.5, 0.6]) },
+    ]);
+
+    const schema = await table.schema();
+    const vectorField = schema.fields.find((f) => f.name === "vector");
+    expect(vectorField).toBeDefined();
+    expect(vectorField!.type).toBeInstanceOf(FixedSizeList);
+
+    const fsl = vectorField!.type as FixedSizeList;
+    expect(fsl.listSize).toBe(3);
+    expect(fsl.children[0].type.typeId).toBe(Type.Float);
+    // precision: HALF=0, SINGLE=1, DOUBLE=2
+    expect((fsl.children[0].type as Float32).precision).toBe(1);
+  });
+});

nodejs/examples/package-lock.json

@@ -30,12 +30,15 @@
         "x64",
         "arm64"
       ],
+      "dev": true,
       "license": "Apache-2.0",
+      "optional": true,
       "os": [
         "darwin",
         "linux",
         "win32"
       ],
+      "peer": true,
       "dependencies": {
         "reflect-metadata": "^0.2.2"
       },
@@ -91,14 +94,15 @@
       }
     },
     "node_modules/@babel/code-frame": {
-      "version": "7.26.2",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.26.2.tgz",
-      "integrity": "sha512-RJlIHRueQgwWitWgF8OdFYGZX328Ax5BCemNGlqHfplnRT9ESi8JkFlvaVYbS+UubVY6dpv87Fs2u5M29iNFVQ==",
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.0.tgz",
+      "integrity": "sha512-9NhCeYjq9+3uxgdtp20LSiJXJvN0FeCtNGpJxuMFZ1Kv3cWUNb6DOhJwUvcVCzKGR66cw4njwM6hrJLqgOwbcw==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "@babel/helper-validator-identifier": "^7.25.9",
+        "@babel/helper-validator-identifier": "^7.28.5",
         "js-tokens": "^4.0.0",
-        "picocolors": "^1.0.0"
+        "picocolors": "^1.1.1"
       },
       "engines": {
         "node": ">=6.9.0"
@@ -233,19 +237,21 @@
       }
     },
     "node_modules/@babel/helper-string-parser": {
-      "version": "7.25.9",
-      "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.25.9.tgz",
-      "integrity": "sha512-4A/SCr/2KLd5jrtOMFzaKjVtAei3+2r/NChoBNoZ3EyP/+GlhoaEGoWOZUmFmoITP7zOJyHIMm+DYRd8o3PvHA==",
+      "version": "7.27.1",
+      "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.27.1.tgz",
+      "integrity": "sha512-qMlSxKbpRlAridDExk92nSobyDdpPijUq2DW6oDnUqd0iOGxmQjyqhMIihI9+zv4LPyZdRje2cavWPbCbWm3eA==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/helper-validator-identifier": {
-      "version": "7.25.9",
-      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.25.9.tgz",
-      "integrity": "sha512-Ed61U6XJc3CVRfkERJWDz4dJwKe7iLmmJsbOGu9wSloNSFttHV0I8g6UAgb7qnK5ly5bGLPd4oXZlxCdANBOWQ==",
+      "version": "7.28.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.28.5.tgz",
+      "integrity": "sha512-qSs4ifwzKJSV39ucNjsvc6WVHs6b7S03sOh2OcHF9UHfVPqWWALUsNUVzhSBiItjRZoLHx7nIarVjqKVusUZ1Q==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">=6.9.0"
       }
@@ -260,25 +266,27 @@
       }
     },
     "node_modules/@babel/helpers": {
-      "version": "7.26.0",
-      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.26.0.tgz",
-      "integrity": "sha512-tbhNuIxNcVb21pInl3ZSjksLCvgdZy9KwJ8brv993QtIVKJBBkYXz4q4ZbAv31GdnC+R90np23L5FbEBlthAEw==",
+      "version": "7.28.6",
+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.28.6.tgz",
+      "integrity": "sha512-xOBvwq86HHdB7WUDTfKfT/Vuxh7gElQ+Sfti2Cy6yIWNW05P8iUslOVcZ4/sKbE+/jQaukQAdz/gf3724kYdqw==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "@babel/template": "^7.25.9",
-        "@babel/types": "^7.26.0"
+        "@babel/template": "^7.28.6",
+        "@babel/types": "^7.28.6"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/parser": {
-      "version": "7.26.2",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.26.2.tgz",
-      "integrity": "sha512-DWMCZH9WA4Maitz2q21SRKHo9QXZxkDsbNZoVD62gusNtNBBqDg9i7uOhASfTfIGNzW+O+r7+jAlM8dwphcJKQ==",
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.29.0.tgz",
+      "integrity": "sha512-IyDgFV5GeDUVX4YdF/3CPULtVGSXXMLh1xVIgdCgxApktqnQV0r7/8Nqthg+8YLGaAtdyIlo2qIdZrbCv4+7ww==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "@babel/types": "^7.26.0"
+        "@babel/types": "^7.29.0"
       },
       "bin": {
         "parser": "bin/babel-parser.js"
@@ -510,14 +518,15 @@
       }
     },
     "node_modules/@babel/template": {
-      "version": "7.25.9",
-      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.25.9.tgz",
-      "integrity": "sha512-9DGttpmPvIxBb/2uwpVo3dqJ+O6RooAFOS+lB+xDqoE2PVCE8nfoHMdZLpfCQRLwvohzXISPZcgxt80xLfsuwg==",
+      "version": "7.28.6",
+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.28.6.tgz",
+      "integrity": "sha512-YA6Ma2KsCdGb+WC6UpBVFJGXL58MDA6oyONbjyF/+5sBgxY/dwkhLogbMT2GXXyU84/IhRw/2D1Os1B/giz+BQ==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "@babel/code-frame": "^7.25.9",
-        "@babel/parser": "^7.25.9",
-        "@babel/types": "^7.25.9"
+        "@babel/code-frame": "^7.28.6",
+        "@babel/parser": "^7.28.6",
+        "@babel/types": "^7.28.6"
       },
       "engines": {
         "node": ">=6.9.0"
@@ -542,13 +551,14 @@
       }
     },
     "node_modules/@babel/types": {
-      "version": "7.26.0",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.26.0.tgz",
-      "integrity": "sha512-Z/yiTPj+lDVnF7lWeKCIJzaIkI0vYO87dMpZ4bg4TDrFe4XXLFWL1TbXU27gBP3QccxV9mZICCrnjnYlJjXHOA==",
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.29.0.tgz",
+      "integrity": "sha512-LwdZHpScM4Qz8Xw2iKSzS+cfglZzJGvofQICy7W7v4caru4EaAmyUuO6BGrbyQ2mYV11W0U8j5mBhd14dd3B0A==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "@babel/helper-string-parser": "^7.25.9",
-        "@babel/helper-validator-identifier": "^7.25.9"
+        "@babel/helper-string-parser": "^7.27.1",
+        "@babel/helper-validator-identifier": "^7.28.5"
       },
       "engines": {
         "node": ">=6.9.0"
@@ -1151,95 +1161,6 @@
         "url": "https://opencollective.com/libvips"
       }
     },
-    "node_modules/@isaacs/cliui": {
-      "version": "8.0.2",
-      "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",
-      "integrity": "sha512-O8jcjabXaleOG9DQ0+ARXWZBTfnP4WNAqzuiJK7ll44AmxGKv/J2M4TPjxjY3znBCfvBXFzucm1twdyFybFqEA==",
-      "dependencies": {
-        "string-width": "^5.1.2",
-        "string-width-cjs": "npm:string-width@^4.2.0",
-        "strip-ansi": "^7.0.1",
-        "strip-ansi-cjs": "npm:strip-ansi@^6.0.1",
-        "wrap-ansi": "^8.1.0",
-        "wrap-ansi-cjs": "npm:wrap-ansi@^7.0.0"
-      },
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@isaacs/cliui/node_modules/ansi-regex": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.1.0.tgz",
-      "integrity": "sha512-7HSX4QQb4CspciLpVFwyRe79O3xsIZDDLER21kERQ71oaPodF8jL725AgJMFAYbooIqolJoRLuM81SpeUkpkvA==",
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/chalk/ansi-regex?sponsor=1"
-      }
-    },
-    "node_modules/@isaacs/cliui/node_modules/ansi-styles": {
-      "version": "6.2.1",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-6.2.1.tgz",
-      "integrity": "sha512-bN798gFfQX+viw3R7yrGWRqnrN2oRkEkUjjl4JNn4E8GxxbjtG3FbrEIIY3l8/hrwUwIeCZvi4QuOTP4MErVug==",
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
-      }
-    },
-    "node_modules/@isaacs/cliui/node_modules/emoji-regex": {
-      "version": "9.2.2",
-      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-9.2.2.tgz",
-      "integrity": "sha512-L18DaJsXSUk2+42pv8mLs5jJT2hqFkFE4j21wOmgbUqsZ2hL72NsUU785g9RXgo3s0ZNgVl42TiHp3ZtOv/Vyg=="
-    },
-    "node_modules/@isaacs/cliui/node_modules/string-width": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/string-width/-/string-width-5.1.2.tgz",
-      "integrity": "sha512-HnLOCR3vjcY8beoNLtcjZ5/nxn2afmME6lhrDrebokqMap+XbeW8n9TXpPDOqdGK5qcI3oT0GKTW6wC7EMiVqA==",
-      "dependencies": {
-        "eastasianwidth": "^0.2.0",
-        "emoji-regex": "^9.2.2",
-        "strip-ansi": "^7.0.1"
-      },
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
-    "node_modules/@isaacs/cliui/node_modules/strip-ansi": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-7.1.0.tgz",
-      "integrity": "sha512-iq6eVVI64nQQTRYq2KtEg2d2uU7LElhTJwsH4YzIHZshxlgZms/wIc4VoDQTlG/IvVIrBKG06CrZnp0qv7hkcQ==",
-      "dependencies": {
-        "ansi-regex": "^6.0.1"
-      },
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/chalk/strip-ansi?sponsor=1"
-      }
-    },
-    "node_modules/@isaacs/cliui/node_modules/wrap-ansi": {
-      "version": "8.1.0",
-      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-8.1.0.tgz",
-      "integrity": "sha512-si7QWI6zUMq56bESFvagtmzMdGOtoxfR+Sez11Mobfc7tm+VkUckk9bW2UeffTGVUbOksxmSw0AA2gs8g71NCQ==",
-      "dependencies": {
-        "ansi-styles": "^6.1.0",
-        "string-width": "^5.0.1",
-        "strip-ansi": "^7.0.1"
-      },
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
-      }
-    },
     "node_modules/@isaacs/fs-minipass": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/@isaacs/fs-minipass/-/fs-minipass-4.0.1.tgz",
@@ -1606,15 +1527,6 @@
       "resolved": "../dist",
       "link": true
     },
-    "node_modules/@pkgjs/parseargs": {
-      "version": "0.11.0",
-      "resolved": "https://registry.npmjs.org/@pkgjs/parseargs/-/parseargs-0.11.0.tgz",
-      "integrity": "sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==",
-      "optional": true,
-      "engines": {
-        "node": ">=14"
-      }
-    },
     "node_modules/@protobufjs/aspromise": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz",
@@ -1846,6 +1758,7 @@
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
       "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
+      "dev": true,
       "engines": {
         "node": ">=8"
       }
@@ -1854,6 +1767,7 @@
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
       "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+      "dev": true,
       "dependencies": {
         "color-convert": "^2.0.1"
       },
@@ -2019,13 +1933,15 @@
     "node_modules/balanced-match": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
-      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
+      "dev": true
     },
     "node_modules/brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "version": "1.1.12",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz",
+      "integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
@@ -2102,6 +2018,19 @@
       "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
       "dev": true
     },
+    "node_modules/call-bind-apply-helpers": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/call-bind-apply-helpers/-/call-bind-apply-helpers-1.0.2.tgz",
+      "integrity": "sha512-Sp1ablJ0ivDkSzjcaJdxEunN5/XvksFJ2sMBFfq6x0ryhQV/2b/KwFe21cMpmHtPOSij8K99/wSfoEuTObmuMQ==",
+      "license": "MIT",
+      "dependencies": {
+        "es-errors": "^1.3.0",
+        "function-bind": "^1.1.2"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
     "node_modules/callsites": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
@@ -2298,9 +2227,11 @@
       }
     },
     "node_modules/cross-spawn": {
-      "version": "7.0.3",
-      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
-      "integrity": "sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==",
+      "version": "7.0.6",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
+      "integrity": "sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==",
+      "dev": true,
+      "license": "MIT",
       "dependencies": {
         "path-key": "^3.1.0",
         "shebang-command": "^2.0.0",
@@ -2384,10 +2315,19 @@
         "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
       }
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-    "node_modules/eastasianwidth": {
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-    "node_modules/path-scurry": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/path-scurry/-/path-scurry-1.11.1.tgz",
-      "integrity": "sha512-Xa4Nw17FS9ApQFJ9umLiJS4orGjm7ZzwUrwamcGQuHSzDyth9boKDaycYdDcZDuqYATXw4HFXgaqWTctW/v1HA==",
-      "dependencies": {
-        "lru-cache": "^10.2.0",
-        "minipass": "^5.0.0 || ^6.0.2 || ^7.0.0"
-      },
-      "engines": {
-        "node": ">=16 || 14 >=14.18"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
-    "node_modules/path-scurry/node_modules/lru-cache": {
-      "version": "10.4.3",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.4.3.tgz",
-      "integrity": "sha512-JNAzZcXrCt42VGLuYz0zfAzDfAvJWW6AfYlDBQyDV5DClI2m5sAmK+OIO7s59XfsRsWHp02jAJrRadPRGTt6SQ=="
-    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -4246,61 +4246,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/rimraf": {
-      "version": "5.0.10",
-      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-5.0.10.tgz",
-      "integrity": "sha512-l0OE8wL34P4nJH/H2ffoaniAokM2qSmrtXHmlpvYr5AVVX8msAyW0l8NVJFDxlSK4u3Uh/f41cQheDVdnYijwQ==",
-      "dependencies": {
-        "glob": "^10.3.7"
-      },
-      "bin": {
-        "rimraf": "dist/esm/bin.mjs"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
-    "node_modules/rimraf/node_modules/brace-expansion": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
-      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
-      "dependencies": {
-        "balanced-match": "^1.0.0"
-      }
-    },
-    "node_modules/rimraf/node_modules/glob": {
-      "version": "10.4.5",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-10.4.5.tgz",
-      "integrity": "sha512-7Bv8RF0k6xjo7d4A/PxYLbUCfb6c+Vpd2/mB2yRDlew7Jb5hEXiCD9ibfO7wpk8i4sevK6DFny9h7EYbM3/sHg==",
-      "dependencies": {
-        "foreground-child": "^3.1.0",
-        "jackspeak": "^3.1.2",
-        "minimatch": "^9.0.4",
-        "minipass": "^7.1.2",
-        "package-json-from-dist": "^1.0.0",
-        "path-scurry": "^1.11.1"
-      },
-      "bin": {
-        "glob": "dist/esm/bin.mjs"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
-    "node_modules/rimraf/node_modules/minimatch": {
-      "version": "9.0.5",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.5.tgz",
-      "integrity": "sha512-G6T0ZX48xgozx7587koeX9Ys2NYy6Gmv//P89sEte9V9whIapMNF4idKxnW2QtCcLiTWlb/wfCabAtAFWhhBow==",
-      "dependencies": {
-        "brace-expansion": "^2.0.1"
-      },
-      "engines": {
-        "node": ">=16 || 14 >=14.17"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
     "node_modules/semver": {
       "version": "7.6.3",
       "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.3.tgz",
@@ -4354,6 +4299,7 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
       "integrity": "sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==",
+      "dev": true,
       "dependencies": {
         "shebang-regex": "^3.0.0"
       },
@@ -4365,6 +4311,7 @@
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/shebang-regex/-/shebang-regex-3.0.0.tgz",
       "integrity": "sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==",
+      "dev": true,
       "engines": {
         "node": ">=8"
       }
@@ -4452,20 +4399,7 @@
       "version": "4.2.3",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
       "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
-      "dependencies": {
-        "emoji-regex": "^8.0.0",
-        "is-fullwidth-code-point": "^3.0.0",
-        "strip-ansi": "^6.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/string-width-cjs": {
-      "name": "string-width",
-      "version": "4.2.3",
-      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
-      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+      "dev": true,
       "dependencies": {
         "emoji-regex": "^8.0.0",
         "is-fullwidth-code-point": "^3.0.0",
@@ -4479,18 +4413,7 @@
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
       "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
-      "dependencies": {
-        "ansi-regex": "^5.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/strip-ansi-cjs": {
-      "name": "strip-ansi",
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
-      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+      "dev": true,
       "dependencies": {
         "ansi-regex": "^5.0.1"
       },
@@ -4541,15 +4464,15 @@
       }
     },
     "node_modules/tar": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-7.4.3.tgz",
-      "integrity": "sha512-5S7Va8hKfV7W5U6g3aYxXmlPoZVAwUMy9AOKyF2fVuZa2UD3qZjg578OrLRt8PcNN1PleVaL/5/yYATNL0ICUw==",
+      "version": "7.5.10",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-7.5.10.tgz",
+      "integrity": "sha512-8mOPs1//5q/rlkNSPcCegA6hiHJYDmSLEI8aMH/CdSQJNWztHC9WHNam5zdQlfpTwB9Xp7IBEsHfV5LKMJGVAw==",
+      "license": "BlueOak-1.0.0",
       "dependencies": {
         "@isaacs/fs-minipass": "^4.0.0",
         "chownr": "^3.0.0",
         "minipass": "^7.1.2",
-        "minizlib": "^3.0.1",
-        "mkdirp": "^3.0.1",
+        "minizlib": "^3.1.0",
         "yallist": "^5.0.0"
       },
       "engines": {
@@ -4782,6 +4705,7 @@
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
       "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+      "dev": true,
       "dependencies": {
         "isexe": "^2.0.0"
       },
@@ -4809,23 +4733,6 @@
         "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
       }
     },
-    "node_modules/wrap-ansi-cjs": {
-      "name": "wrap-ansi",
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
-      "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
-      "dependencies": {
-        "ansi-styles": "^4.0.0",
-        "string-width": "^4.1.0",
-        "strip-ansi": "^6.0.0"
-      },
-      "engines": {
-        "node": ">=10"
-      },
-      "funding": {
-        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
-      }
-    },
     "node_modules/wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",

nodejs/lancedb/arrow.ts

@@ -20,6 +20,8 @@ import {
   Float32,
   Float64,
   Int,
+  Int8,
+  Int16,
   Int32,
   Int64,
   LargeBinary,
@@ -35,6 +37,8 @@ import {
   Timestamp,
   Type,
   Uint8,
+  Uint16,
+  Uint32,
   Utf8,
   Vector,
   makeVector as arrowMakeVector,
@@ -529,7 +533,8 @@ function isObject(value: unknown): value is Record<string, unknown> {
     !(value instanceof Date) &&
     !(value instanceof Set) &&
     !(value instanceof Map) &&
-    !(value instanceof Buffer)
+    !(value instanceof Buffer) &&
+    !ArrayBuffer.isView(value)
   );
 }
 
@@ -588,6 +593,13 @@ function inferType(
     return new Bool();
   } else if (value instanceof Buffer) {
     return new Binary();
+  } else if (ArrayBuffer.isView(value) && !(value instanceof DataView)) {
+    const info = typedArrayToArrowType(value);
+    if (info !== undefined) {
+      const child = new Field("item", info.elementType, true);
+      return new FixedSizeList(info.length, child);
+    }
+    return undefined;
   } else if (Array.isArray(value)) {
     if (value.length === 0) {
       return undefined; // Without any values we can't infer the type
@@ -746,6 +758,32 @@ function makeListVector(lists: unknown[][]): Vector<unknown> {
   return listBuilder.finish().toVector();
 }
 
+/**
+ * Map a JS TypedArray instance to the corresponding Arrow element DataType
+ * and its length. Returns undefined if the value is not a recognized TypedArray.
+ */
+function typedArrayToArrowType(
+  value: ArrayBufferView,
+): { elementType: DataType; length: number } | undefined {
+  if (value instanceof Float32Array)
+    return { elementType: new Float32(), length: value.length };
+  if (value instanceof Float64Array)
+    return { elementType: new Float64(), length: value.length };
+  if (value instanceof Uint8Array)
+    return { elementType: new Uint8(), length: value.length };
+  if (value instanceof Uint16Array)
+    return { elementType: new Uint16(), length: value.length };
+  if (value instanceof Uint32Array)
+    return { elementType: new Uint32(), length: value.length };
+  if (value instanceof Int8Array)
+    return { elementType: new Int8(), length: value.length };
+  if (value instanceof Int16Array)
+    return { elementType: new Int16(), length: value.length };
+  if (value instanceof Int32Array)
+    return { elementType: new Int32(), length: value.length };
+  return undefined;
+}
+
 /** Helper function to convert an Array of JS values to an Arrow Vector */
 function makeVector(
   values: unknown[],
@@ -814,6 +852,16 @@ function makeVector(
       "makeVector cannot infer the type if all values are null or undefined",
     );
   }
+  if (ArrayBuffer.isView(sampleValue) && !(sampleValue instanceof DataView)) {
+    const info = typedArrayToArrowType(sampleValue);
+    if (info !== undefined) {
+      const fslType = new FixedSizeList(
+        info.length,
+        new Field("item", info.elementType, true),
+      );
+      return vectorFromArray(values, fslType);
+    }
+  }
   if (Array.isArray(sampleValue)) {
     // Default Arrow inference doesn't handle list types
     return makeListVector(values as unknown[][]);

nodejs/lancedb/table.ts

@@ -5,12 +5,15 @@ import {
   Table as ArrowTable,
   Data,
   DataType,
+  Field,
   IntoVector,
   MultiVector,
   Schema,
   dataTypeToJson,
   fromDataToBuffer,
+  fromTableToBuffer,
   isMultiVector,
+  makeEmptyTable,
   tableFromIPC,
 } from "./arrow";
 
@@ -84,6 +87,16 @@ export interface OptimizeOptions {
    * tbl.optimize({cleanupOlderThan: new Date()});
    */
   cleanupOlderThan: Date;
+  /**
+   * Because they may be part of an in-progress transaction, files newer than
+   * 7 days old are not deleted by default. If you are sure that there are no
+   * in-progress transactions, then you can set this to true to delete all
+   * files older than `cleanupOlderThan`.
+   *
+   * **WARNING**: This should only be set to true if you can guarantee that
+   * no other process is currently working on this dataset. Otherwise the
+   * dataset could be put into a corrupted state.
+   */
   deleteUnverified: boolean;
 }
 
@@ -381,15 +394,16 @@ export abstract class Table {
   abstract vectorSearch(vector: IntoVector | MultiVector): VectorQuery;
   /**
    * Add new columns with defined values.
-   * @param {AddColumnsSql[]} newColumnTransforms 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.
+   * @param {AddColumnsSql[] | Field | Field[] | Schema} newColumnTransforms Either:
+   *   - An array of objects with column names and SQL expressions to calculate values
+   *   - A single Arrow Field defining one column with its data type (column will be initialized with null values)
+   *   - An array of Arrow Fields defining columns with their data types (columns will be initialized with null values)
+   *   - An Arrow Schema defining columns with their data types (columns will be initialized with null values)
    * @returns {Promise<AddColumnsResult>} A promise that resolves to an object
    * containing the new version number of the table after adding the columns.
    */
   abstract addColumns(
-    newColumnTransforms: AddColumnsSql[],
+    newColumnTransforms: AddColumnsSql[] | Field | Field[] | Schema,
   ): Promise<AddColumnsResult>;
 
   /**
@@ -501,19 +515,7 @@ export abstract class Table {
    *  - 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
+   *  The frequency an application should 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
@@ -806,9 +808,40 @@ export class LocalTable extends Table {
   // TODO: Support BatchUDF
 
   async addColumns(
-    newColumnTransforms: AddColumnsSql[],
+    newColumnTransforms: AddColumnsSql[] | Field | Field[] | Schema,
   ): Promise<AddColumnsResult> {
-    return await this.inner.addColumns(newColumnTransforms);
+    // Handle single Field -> convert to array of Fields
+    if (newColumnTransforms instanceof Field) {
+      newColumnTransforms = [newColumnTransforms];
+    }
+
+    // Handle array of Fields -> convert to Schema
+    if (
+      Array.isArray(newColumnTransforms) &&
+      newColumnTransforms.length > 0 &&
+      newColumnTransforms[0] instanceof Field
+    ) {
+      const fields = newColumnTransforms as Field[];
+      newColumnTransforms = new Schema(fields);
+    }
+
+    // Handle Schema -> use schema-based approach
+    if (newColumnTransforms instanceof Schema) {
+      const schema = newColumnTransforms;
+      // Convert schema to buffer using Arrow IPC format
+      const emptyTable = makeEmptyTable(schema);
+      const schemaBuf = await fromTableToBuffer(emptyTable);
+      return await this.inner.addColumnsWithSchema(schemaBuf);
+    }
+
+    // Handle SQL expressions (existing functionality)
+    if (Array.isArray(newColumnTransforms)) {
+      return await this.inner.addColumns(
+        newColumnTransforms as AddColumnsSql[],
+      );
+    }
+
+    throw new Error("Invalid input type for addColumns");
   }
 
   async alterColumns(

nodejs/npm/darwin-arm64/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-darwin-arm64",
-	"version": "0.27.0-beta.3",
+	"version": "0.27.0-beta.5",
 	"os": ["darwin"],
 	"cpu": ["arm64"],
 	"main": "lancedb.darwin-arm64.node",

nodejs/npm/linux-arm64-gnu/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-arm64-gnu",
-	"version": "0.27.0-beta.3",
+	"version": "0.27.0-beta.5",
 	"os": ["linux"],
 	"cpu": ["arm64"],
 	"main": "lancedb.linux-arm64-gnu.node",

nodejs/npm/linux-arm64-musl/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-arm64-musl",
-	"version": "0.27.0-beta.3",
+	"version": "0.27.0-beta.5",
 	"os": ["linux"],
 	"cpu": ["arm64"],
 	"main": "lancedb.linux-arm64-musl.node",

nodejs/npm/linux-x64-gnu/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-x64-gnu",
-	"version": "0.27.0-beta.3",
+	"version": "0.27.0-beta.5",
 	"os": ["linux"],
 	"cpu": ["x64"],
 	"main": "lancedb.linux-x64-gnu.node",

nodejs/npm/linux-x64-musl/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-x64-musl",
-	"version": "0.27.0-beta.3",
+	"version": "0.27.0-beta.5",
 	"os": ["linux"],
 	"cpu": ["x64"],
 	"main": "lancedb.linux-x64-musl.node",

nodejs/npm/win32-arm64-msvc/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@lancedb/lancedb-win32-arm64-msvc",
-  "version": "0.27.0-beta.3",
+  "version": "0.27.0-beta.5",
   "os": [
     "win32"
   ],

nodejs/npm/win32-x64-msvc/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-win32-x64-msvc",
-	"version": "0.27.0-beta.3",
+	"version": "0.27.0-beta.5",
 	"os": ["win32"],
 	"cpu": ["x64"],
 	"main": "lancedb.win32-x64-msvc.node",

nodejs/package.json

@@ -11,7 +11,7 @@
     "ann"
   ],
   "private": false,
-  "version": "0.27.0-beta.3",
+  "version": "0.27.0-beta.5",
   "main": "dist/index.js",
   "exports": {
     ".": "./dist/index.js",

nodejs/src/table.rs

@@ -3,7 +3,7 @@
 
 use std::collections::HashMap;
 
-use lancedb::ipc::ipc_file_to_batches;
+use lancedb::ipc::{ipc_file_to_batches, ipc_file_to_schema};
 use lancedb::table::{
     AddDataMode, ColumnAlteration as LanceColumnAlteration, Duration, NewColumnTransform,
     OptimizeAction, OptimizeOptions, Table as LanceDbTable,
@@ -279,6 +279,23 @@ impl Table {
         Ok(res.into())
     }
 
+    #[napi(catch_unwind)]
+    pub async fn add_columns_with_schema(
+        &self,
+        schema_buf: Buffer,
+    ) -> napi::Result<AddColumnsResult> {
+        let schema = ipc_file_to_schema(schema_buf.to_vec())
+            .map_err(|e| napi::Error::from_reason(format!("Failed to read IPC schema: {}", e)))?;
+
+        let transforms = NewColumnTransform::AllNulls(schema);
+        let res = self
+            .inner_ref()?
+            .add_columns(transforms, None)
+            .await
+            .default_error()?;
+        Ok(res.into())
+    }
+
     #[napi(catch_unwind)]
     pub async fn alter_columns(
         &self,

python/.bumpversion.toml

@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "0.30.0-beta.3"
+current_version = "0.30.0"
 parse = """(?x)
     (?P<major>0|[1-9]\\d*)\\.
     (?P<minor>0|[1-9]\\d*)\\.

python/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "lancedb-python"
-version = "0.30.0-beta.3"
+version = "0.30.0"
 edition.workspace = true
 description = "Python bindings for LanceDB"
 license.workspace = true
@@ -16,9 +16,11 @@ crate-type = ["cdylib"]
 [dependencies]
 arrow = { version = "57.2", features = ["pyarrow"] }
 async-trait = "0.1"
+bytes = "1"
 lancedb = { path = "../rust/lancedb", default-features = false }
 lance-core.workspace = true
 lance-namespace.workspace = true
+lance-namespace-impls.workspace = true
 lance-io.workspace = true
 env_logger.workspace = true
 pyo3 = { version = "0.26", features = ["extension-module", "abi3-py39"] }
@@ -28,6 +30,8 @@ pyo3-async-runtimes = { version = "0.26", features = [
 ] }
 pin-project = "1.1.5"
 futures.workspace = true
+serde = "1"
+serde_json = "1"
 snafu.workspace = true
 tokio = { version = "1.40", features = ["sync"] }
 

python/README.md

@@ -1,4 +1,4 @@
-# LanceDB
+# LanceDB Python SDK
 
 A Python library for [LanceDB](https://github.com/lancedb/lancedb).
 

python/pyproject.toml

@@ -3,10 +3,10 @@ name = "lancedb"
 # version in Cargo.toml
 dynamic = ["version"]
 dependencies = [
-    "deprecation",
-    "numpy",
+    "deprecation>=2.1.0",
+    "numpy>=1.24.0",
     "overrides>=0.7; python_version<'3.12'",
-    "packaging",
+    "packaging>=23.0",
     "pyarrow>=16",
     "pydantic>=1.10",
     "tqdm>=4.27.0",
@@ -45,51 +45,51 @@ repository = "https://github.com/lancedb/lancedb"
 
 [project.optional-dependencies]
 pylance = [
-    "pylance>=1.0.0b14",
+    "pylance>=4.0.0b7",
 ]
 tests = [
-    "aiohttp",
-    "boto3",
+    "aiohttp>=3.9.0",
+    "boto3>=1.28.57",
     "pandas>=1.4",
-    "pytest",
-    "pytest-mock",
-    "pytest-asyncio",
-    "duckdb",
-    "pytz",
+    "pytest>=7.0",
+    "pytest-mock>=3.10",
+    "pytest-asyncio>=0.21",
+    "duckdb>=0.9.0",
+    "pytz>=2023.3",
     "polars>=0.19, <=1.3.0",
-    "tantivy",
-    "pyarrow-stubs",
-    "pylance>=1.0.0b14,<3.0.0",
-    "requests",
-    "datafusion<52",
+    "tantivy>=0.20.0",
+    "pyarrow-stubs>=16.0",
+    "pylance>=4.0.0b7",
+    "requests>=2.31.0",
+    "datafusion>=52,<53",
 ]
 dev = [
-    "ruff",
-    "pre-commit",
-    "pyright",
+    "ruff>=0.3.0",
+    "pre-commit>=3.5.0",
+    "pyright>=1.1.350",
     'typing-extensions>=4.0.0; python_version < "3.11"',
 ]
 docs = ["mkdocs", "mkdocs-jupyter", "mkdocs-material", "mkdocstrings-python"]
-clip = ["torch", "pillow", "open-clip-torch"]
-siglip = ["torch", "pillow", "transformers>=4.41.0","sentencepiece"]
+clip = ["torch", "pillow>=12.1.1", "open-clip-torch"]
+siglip = ["torch", "pillow>=12.1.1", "transformers>=4.41.0","sentencepiece"]
 embeddings = [
     "requests>=2.31.0",
     "openai>=1.6.1",
-    "sentence-transformers",
-    "torch",
-    "pillow",
-    "open-clip-torch",
-    "cohere",
+    "sentence-transformers>=2.2.0",
+    "torch>=2.0.0",
+    "pillow>=12.1.1",
+    "open-clip-torch>=2.20.0",
+    "cohere>=4.0",
     "colpali-engine>=0.3.10",
-    "huggingface_hub",
-    "InstructorEmbedding",
-    "google.generativeai",
+    "huggingface_hub>=0.19.0",
+    "InstructorEmbedding>=1.0.1",
+    "google.generativeai>=0.3.0",
     "boto3>=1.28.57",
-    "awscli>=1.29.57",
+    "awscli>=1.44.38",
     "botocore>=1.31.57",
     'ibm-watsonx-ai>=1.1.2; python_version >= "3.10"',
     "ollama>=0.3.0",
-    "sentencepiece"
+    "sentencepiece>=0.1.99"
 ]
 azure = ["adlfs>=2024.2.0"]
 

python/python/lancedb/_lancedb.pyi

@@ -166,6 +166,8 @@ class Table:
     async def checkout(self, version: Union[int, str]): ...
     async def checkout_latest(self): ...
     async def restore(self, version: Optional[Union[int, str]] = None): ...
+    async def prewarm_index(self, index_name: str) -> None: ...
+    async def prewarm_data(self, columns: Optional[List[str]] = None) -> None: ...
     async def list_indices(self) -> list[IndexConfig]: ...
     async def delete(self, filter: str) -> DeleteResult: ...
     async def add_columns(self, columns: list[tuple[str, str]]) -> AddColumnsResult: ...

python/python/lancedb/db.py

@@ -8,7 +8,7 @@ from abc import abstractmethod
 from datetime import timedelta
 from pathlib import Path
 import sys
-from typing import TYPE_CHECKING, Dict, Iterable, List, Literal, Optional, Union
+from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Literal, Optional, Union
 
 if sys.version_info >= (3, 12):
     from typing import override
@@ -1541,6 +1541,8 @@ class AsyncConnection(object):
         storage_options_provider: Optional["StorageOptionsProvider"] = None,
         index_cache_size: Optional[int] = None,
         location: Optional[str] = None,
+        namespace_client: Optional[Any] = None,
+        managed_versioning: Optional[bool] = None,
     ) -> AsyncTable:
         """Open a Lance Table in the database.
 
@@ -1573,6 +1575,9 @@ class AsyncConnection(object):
             The explicit location (URI) of the table. If provided, the table will be
             opened from this location instead of deriving it from the database URI
             and table name.
+        managed_versioning: bool, optional
+            Whether managed versioning is enabled for this table. If provided,
+            avoids a redundant describe_table call when namespace_client is set.
 
         Returns
         -------
@@ -1587,6 +1592,8 @@ class AsyncConnection(object):
             storage_options_provider=storage_options_provider,
             index_cache_size=index_cache_size,
             location=location,
+            namespace_client=namespace_client,
+            managed_versioning=managed_versioning,
         )
         return AsyncTable(table)
 

python/python/lancedb/namespace.py

@@ -12,7 +12,7 @@ from __future__ import annotations
 
 import asyncio
 import sys
-from typing import Dict, Iterable, List, Optional, Union
+from typing import Any, Dict, Iterable, List, Optional, Union
 
 if sys.version_info >= (3, 12):
     from typing import override
@@ -240,7 +240,7 @@ class LanceNamespaceDBConnection(DBConnection):
         session : Optional[Session]
             A session to use for this connection
         """
-        self._ns = namespace
+        self._namespace_client = namespace
         self.read_consistency_interval = read_consistency_interval
         self.storage_options = storage_options or {}
         self.session = session
@@ -269,7 +269,7 @@ class LanceNamespaceDBConnection(DBConnection):
         if namespace is None:
             namespace = []
         request = ListTablesRequest(id=namespace, page_token=page_token, limit=limit)
-        response = self._ns.list_tables(request)
+        response = self._namespace_client.list_tables(request)
         return response.tables if response.tables else []
 
     @override
@@ -309,7 +309,9 @@ class LanceNamespaceDBConnection(DBConnection):
             # Try to describe the table first to see if it exists
             try:
                 describe_request = DescribeTableRequest(id=table_id)
-                describe_response = self._ns.describe_table(describe_request)
+                describe_response = self._namespace_client.describe_table(
+                    describe_request
+                )
                 location = describe_response.location
                 namespace_storage_options = describe_response.storage_options
             except Exception:
@@ -323,7 +325,7 @@ class LanceNamespaceDBConnection(DBConnection):
                 location=None,
                 properties=self.storage_options if self.storage_options else None,
             )
-            declare_response = self._ns.declare_table(declare_request)
+            declare_response = self._namespace_client.declare_table(declare_request)
 
             if not declare_response.location:
                 raise ValueError(
@@ -353,7 +355,7 @@ class LanceNamespaceDBConnection(DBConnection):
         # Only create if namespace returned storage_options (not None)
         if storage_options_provider is None and namespace_storage_options is not None:
             storage_options_provider = LanceNamespaceStorageOptionsProvider(
-                namespace=self._ns,
+                namespace=self._namespace_client,
                 table_id=table_id,
             )
 
@@ -371,6 +373,7 @@ class LanceNamespaceDBConnection(DBConnection):
             storage_options=merged_storage_options,
             storage_options_provider=storage_options_provider,
             location=location,
+            namespace_client=self._namespace_client,
         )
 
         return tbl
@@ -389,7 +392,7 @@ class LanceNamespaceDBConnection(DBConnection):
             namespace = []
         table_id = namespace + [name]
         request = DescribeTableRequest(id=table_id)
-        response = self._ns.describe_table(request)
+        response = self._namespace_client.describe_table(request)
 
         # Merge storage options: self.storage_options < user options < namespace options
         merged_storage_options = dict(self.storage_options)
@@ -402,10 +405,14 @@ class LanceNamespaceDBConnection(DBConnection):
         # Only create if namespace returned storage_options (not None)
         if storage_options_provider is None and response.storage_options is not None:
             storage_options_provider = LanceNamespaceStorageOptionsProvider(
-                namespace=self._ns,
+                namespace=self._namespace_client,
                 table_id=table_id,
             )
 
+        # Pass managed_versioning to avoid redundant describe_table call in Rust.
+        # Convert None to False since we already have the answer from describe_table.
+        managed_versioning = response.managed_versioning is True
+
         return self._lance_table_from_uri(
             name,
             response.location,
@@ -413,6 +420,8 @@ class LanceNamespaceDBConnection(DBConnection):
             storage_options=merged_storage_options,
             storage_options_provider=storage_options_provider,
             index_cache_size=index_cache_size,
+            namespace_client=self._namespace_client,
+            managed_versioning=managed_versioning,
         )
 
     @override
@@ -422,7 +431,7 @@ class LanceNamespaceDBConnection(DBConnection):
             namespace = []
         table_id = namespace + [name]
         request = DropTableRequest(id=table_id)
-        self._ns.drop_table(request)
+        self._namespace_client.drop_table(request)
 
     @override
     def rename_table(
@@ -484,7 +493,7 @@ class LanceNamespaceDBConnection(DBConnection):
         request = ListNamespacesRequest(
             id=namespace, page_token=page_token, limit=limit
         )
-        response = self._ns.list_namespaces(request)
+        response = self._namespace_client.list_namespaces(request)
         return ListNamespacesResponse(
             namespaces=response.namespaces if response.namespaces else [],
             page_token=response.page_token,
@@ -520,7 +529,7 @@ class LanceNamespaceDBConnection(DBConnection):
             mode=_normalize_create_namespace_mode(mode),
             properties=properties,
         )
-        response = self._ns.create_namespace(request)
+        response = self._namespace_client.create_namespace(request)
         return CreateNamespaceResponse(
             properties=response.properties if hasattr(response, "properties") else None
         )
@@ -555,7 +564,7 @@ class LanceNamespaceDBConnection(DBConnection):
             mode=_normalize_drop_namespace_mode(mode),
             behavior=_normalize_drop_namespace_behavior(behavior),
         )
-        response = self._ns.drop_namespace(request)
+        response = self._namespace_client.drop_namespace(request)
         return DropNamespaceResponse(
             properties=(
                 response.properties if hasattr(response, "properties") else None
@@ -581,7 +590,7 @@ class LanceNamespaceDBConnection(DBConnection):
             Response containing the namespace properties.
         """
         request = DescribeNamespaceRequest(id=namespace)
-        response = self._ns.describe_namespace(request)
+        response = self._namespace_client.describe_namespace(request)
         return DescribeNamespaceResponse(
             properties=response.properties if hasattr(response, "properties") else None
         )
@@ -615,7 +624,7 @@ class LanceNamespaceDBConnection(DBConnection):
         if namespace is None:
             namespace = []
         request = ListTablesRequest(id=namespace, page_token=page_token, limit=limit)
-        response = self._ns.list_tables(request)
+        response = self._namespace_client.list_tables(request)
         return ListTablesResponse(
             tables=response.tables if response.tables else [],
             page_token=response.page_token,
@@ -630,6 +639,8 @@ class LanceNamespaceDBConnection(DBConnection):
         storage_options: Optional[Dict[str, str]] = None,
         storage_options_provider: Optional[StorageOptionsProvider] = None,
         index_cache_size: Optional[int] = None,
+        namespace_client: Optional[Any] = None,
+        managed_versioning: Optional[bool] = None,
     ) -> LanceTable:
         # Open a table directly from a URI using the location parameter
         # Note: storage_options should already be merged by the caller
@@ -643,6 +654,8 @@ class LanceNamespaceDBConnection(DBConnection):
         )
 
         # Open the table using the temporary connection with the location parameter
+        # Pass namespace_client to enable managed versioning support
+        # Pass managed_versioning to avoid redundant describe_table call
         return LanceTable.open(
             temp_conn,
             name,
@@ -651,6 +664,8 @@ class LanceNamespaceDBConnection(DBConnection):
             storage_options_provider=storage_options_provider,
             index_cache_size=index_cache_size,
             location=table_uri,
+            namespace_client=namespace_client,
+            managed_versioning=managed_versioning,
         )
 
 
@@ -685,7 +700,7 @@ class AsyncLanceNamespaceDBConnection:
         session : Optional[Session]
             A session to use for this connection
         """
-        self._ns = namespace
+        self._namespace_client = namespace
         self.read_consistency_interval = read_consistency_interval
         self.storage_options = storage_options or {}
         self.session = session
@@ -713,7 +728,7 @@ class AsyncLanceNamespaceDBConnection:
         if namespace is None:
             namespace = []
         request = ListTablesRequest(id=namespace, page_token=page_token, limit=limit)
-        response = self._ns.list_tables(request)
+        response = self._namespace_client.list_tables(request)
         return response.tables if response.tables else []
 
     async def create_table(
@@ -750,7 +765,9 @@ class AsyncLanceNamespaceDBConnection:
             # Try to describe the table first to see if it exists
             try:
                 describe_request = DescribeTableRequest(id=table_id)
-                describe_response = self._ns.describe_table(describe_request)
+                describe_response = self._namespace_client.describe_table(
+                    describe_request
+                )
                 location = describe_response.location
                 namespace_storage_options = describe_response.storage_options
             except Exception:
@@ -764,7 +781,7 @@ class AsyncLanceNamespaceDBConnection:
                 location=None,
                 properties=self.storage_options if self.storage_options else None,
             )
-            declare_response = self._ns.declare_table(declare_request)
+            declare_response = self._namespace_client.declare_table(declare_request)
 
             if not declare_response.location:
                 raise ValueError(
@@ -797,7 +814,7 @@ class AsyncLanceNamespaceDBConnection:
                 and namespace_storage_options is not None
             ):
                 provider = LanceNamespaceStorageOptionsProvider(
-                    namespace=self._ns,
+                    namespace=self._namespace_client,
                     table_id=table_id,
                 )
             else:
@@ -817,6 +834,7 @@ class AsyncLanceNamespaceDBConnection:
                 storage_options=merged_storage_options,
                 storage_options_provider=provider,
                 location=location,
+                namespace_client=self._namespace_client,
             )
 
         lance_table = await asyncio.to_thread(_create_table)
@@ -837,7 +855,7 @@ class AsyncLanceNamespaceDBConnection:
             namespace = []
         table_id = namespace + [name]
         request = DescribeTableRequest(id=table_id)
-        response = self._ns.describe_table(request)
+        response = self._namespace_client.describe_table(request)
 
         # Merge storage options: self.storage_options < user options < namespace options
         merged_storage_options = dict(self.storage_options)
@@ -849,10 +867,14 @@ class AsyncLanceNamespaceDBConnection:
         # Create a storage options provider if not provided by user
         if storage_options_provider is None and response.storage_options is not None:
             storage_options_provider = LanceNamespaceStorageOptionsProvider(
-                namespace=self._ns,
+                namespace=self._namespace_client,
                 table_id=table_id,
             )
 
+        # Capture managed_versioning from describe response.
+        # Convert None to False since we already have the answer from describe_table.
+        managed_versioning = response.managed_versioning is True
+
         # Open table in a thread
         def _open_table():
             temp_conn = LanceDBConnection(
@@ -870,6 +892,8 @@ class AsyncLanceNamespaceDBConnection:
                 storage_options_provider=storage_options_provider,
                 index_cache_size=index_cache_size,
                 location=response.location,
+                namespace_client=self._namespace_client,
+                managed_versioning=managed_versioning,
             )
 
         lance_table = await asyncio.to_thread(_open_table)
@@ -881,7 +905,7 @@ class AsyncLanceNamespaceDBConnection:
             namespace = []
         table_id = namespace + [name]
         request = DropTableRequest(id=table_id)
-        self._ns.drop_table(request)
+        self._namespace_client.drop_table(request)
 
     async def rename_table(
         self,
@@ -943,7 +967,7 @@ class AsyncLanceNamespaceDBConnection:
         request = ListNamespacesRequest(
             id=namespace, page_token=page_token, limit=limit
         )
-        response = self._ns.list_namespaces(request)
+        response = self._namespace_client.list_namespaces(request)
         return ListNamespacesResponse(
             namespaces=response.namespaces if response.namespaces else [],
             page_token=response.page_token,
@@ -978,7 +1002,7 @@ class AsyncLanceNamespaceDBConnection:
             mode=_normalize_create_namespace_mode(mode),
             properties=properties,
         )
-        response = self._ns.create_namespace(request)
+        response = self._namespace_client.create_namespace(request)
         return CreateNamespaceResponse(
             properties=response.properties if hasattr(response, "properties") else None
         )
@@ -1012,7 +1036,7 @@ class AsyncLanceNamespaceDBConnection:
             mode=_normalize_drop_namespace_mode(mode),
             behavior=_normalize_drop_namespace_behavior(behavior),
         )
-        response = self._ns.drop_namespace(request)
+        response = self._namespace_client.drop_namespace(request)
         return DropNamespaceResponse(
             properties=(
                 response.properties if hasattr(response, "properties") else None
@@ -1039,7 +1063,7 @@ class AsyncLanceNamespaceDBConnection:
             Response containing the namespace properties.
         """
         request = DescribeNamespaceRequest(id=namespace)
-        response = self._ns.describe_namespace(request)
+        response = self._namespace_client.describe_namespace(request)
         return DescribeNamespaceResponse(
             properties=response.properties if hasattr(response, "properties") else None
         )
@@ -1072,7 +1096,7 @@ class AsyncLanceNamespaceDBConnection:
         if namespace is None:
             namespace = []
         request = ListTablesRequest(id=namespace, page_token=page_token, limit=limit)
-        response = self._ns.list_tables(request)
+        response = self._namespace_client.list_tables(request)
         return ListTablesResponse(
             tables=response.tables if response.tables else [],
             page_token=response.page_token,

python/python/lancedb/remote/table.py

@@ -640,6 +640,45 @@ class RemoteTable(Table):
     def drop_index(self, index_name: str):
         return LOOP.run(self._table.drop_index(index_name))
 
+    def prewarm_index(self, name: str) -> None:
+        """Prewarm an index in the table.
+
+        This is a hint to the database that the index will be accessed in the
+        future and should be loaded into memory if possible.  This can reduce
+        cold-start latency for subsequent queries.
+
+        This call initiates prewarming and returns once the request is accepted.
+        It is idempotent and safe to call from multiple clients concurrently.
+
+        Parameters
+        ----------
+        name: str
+            The name of the index to prewarm
+        """
+        return LOOP.run(self._table.prewarm_index(name))
+
+    def prewarm_data(self, columns: Optional[List[str]] = None) -> None:
+        """Prewarm data for the table.
+
+        This is a hint to the database that the given columns will be accessed
+        in the future and the database should prefetch the data if possible.
+        Currently only supported on remote tables.
+
+        This call initiates prewarming and returns once the request is accepted.
+        It is idempotent and safe to call from multiple clients concurrently.
+
+        This operation has a large upfront cost but can speed up future queries
+        that need to fetch the given columns.  Large columns such as embeddings
+        or binary data may not be practical to prewarm.  This feature is intended
+        for workloads that issue many queries against the same columns.
+
+        Parameters
+        ----------
+        columns: list of str, optional
+            The columns to prewarm. If None, all columns are prewarmed.
+        """
+        return LOOP.run(self._table.prewarm_data(columns))
+
     def wait_for_index(
         self, index_names: Iterable[str], timeout: timedelta = timedelta(seconds=300)
     ):

python/python/lancedb/table.py

@@ -1506,22 +1506,17 @@ class Table(ABC):
             in-progress operation (e.g. appending new data) and these files will not
             be deleted unless they are at least 7 days old. If delete_unverified is True
             then these files will be deleted regardless of their age.
+
+            .. warning::
+
+                This should only be set to True if you can guarantee that no other
+                process is currently working on this dataset. Otherwise the dataset
+                could be put into a corrupted state.
+
         retrain: bool, default False
             This parameter is no longer used and is deprecated.
 
-        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
+        The frequency an application should 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
@@ -1746,6 +1741,8 @@ class LanceTable(Table):
         storage_options_provider: Optional["StorageOptionsProvider"] = None,
         index_cache_size: Optional[int] = None,
         location: Optional[str] = None,
+        namespace_client: Optional[Any] = None,
+        managed_versioning: Optional[bool] = None,
         _async: AsyncTable = None,
     ):
         if namespace is None:
@@ -1753,6 +1750,7 @@ class LanceTable(Table):
         self._conn = connection
         self._namespace = namespace
         self._location = location  # Store location for use in _dataset_path
+        self._namespace_client = namespace_client
         if _async is not None:
             self._table = _async
         else:
@@ -1764,6 +1762,8 @@ class LanceTable(Table):
                     storage_options_provider=storage_options_provider,
                     index_cache_size=index_cache_size,
                     location=location,
+                    namespace_client=namespace_client,
+                    managed_versioning=managed_versioning,
                 )
             )
 
@@ -1806,6 +1806,8 @@ class LanceTable(Table):
         storage_options_provider: Optional["StorageOptionsProvider"] = None,
         index_cache_size: Optional[int] = None,
         location: Optional[str] = None,
+        namespace_client: Optional[Any] = None,
+        managed_versioning: Optional[bool] = None,
     ):
         if namespace is None:
             namespace = []
@@ -1817,6 +1819,8 @@ class LanceTable(Table):
             storage_options_provider=storage_options_provider,
             index_cache_size=index_cache_size,
             location=location,
+            namespace_client=namespace_client,
+            managed_versioning=managed_versioning,
         )
 
         # check the dataset exists
@@ -1848,6 +1852,16 @@ class LanceTable(Table):
                 "Please install with `pip install pylance`."
             )
 
+        if self._namespace_client is not None:
+            table_id = self._namespace + [self.name]
+            return lance.dataset(
+                version=self.version,
+                storage_options=self._conn.storage_options,
+                namespace=self._namespace_client,
+                table_id=table_id,
+                **kwargs,
+            )
+
         return lance.dataset(
             self._dataset_path,
             version=self.version,
@@ -2200,12 +2214,18 @@ class LanceTable(Table):
 
     def prewarm_index(self, name: str) -> None:
         """
-        Prewarms an index in the table
+        Prewarm an index in the table.
 
-        This loads the entire index into memory
+        This is a hint to the database that the index will be accessed in the
+        future and should be loaded into memory if possible.  This can reduce
+        cold-start latency for subsequent queries.
 
-        If the index does not fit into the available cache this call
-        may be wasteful
+        This call initiates prewarming and returns once the request is accepted.
+        It is idempotent and safe to call from multiple clients concurrently.
+
+        It is generally wasteful to call this if the index does not fit into the
+        available cache.  Not all index types support prewarming; unsupported
+        indices will silently ignore the request.
 
         Parameters
         ----------
@@ -2214,6 +2234,29 @@ class LanceTable(Table):
         """
         return LOOP.run(self._table.prewarm_index(name))
 
+    def prewarm_data(self, columns: Optional[List[str]] = None) -> None:
+        """
+        Prewarm data for the table.
+
+        This is a hint to the database that the given columns will be accessed
+        in the future and the database should prefetch the data if possible.
+        Currently only supported on remote tables.
+
+        This call initiates prewarming and returns once the request is accepted.
+        It is idempotent and safe to call from multiple clients concurrently.
+
+        This operation has a large upfront cost but can speed up future queries
+        that need to fetch the given columns.  Large columns such as embeddings
+        or binary data may not be practical to prewarm.  This feature is intended
+        for workloads that issue many queries against the same columns.
+
+        Parameters
+        ----------
+        columns: list of str, optional
+            The columns to prewarm. If None, all columns are prewarmed.
+        """
+        return LOOP.run(self._table.prewarm_data(columns))
+
     def wait_for_index(
         self, index_names: Iterable[str], timeout: timedelta = timedelta(seconds=300)
     ) -> None:
@@ -2713,6 +2756,7 @@ class LanceTable(Table):
         data_storage_version: Optional[str] = None,
         enable_v2_manifest_paths: Optional[bool] = None,
         location: Optional[str] = None,
+        namespace_client: Optional[Any] = None,
     ):
         """
         Create a new table.
@@ -2773,6 +2817,7 @@ class LanceTable(Table):
         self._conn = db
         self._namespace = namespace
         self._location = location
+        self._namespace_client = namespace_client
 
         if data_storage_version is not None:
             warnings.warn(
@@ -2997,22 +3042,17 @@ class LanceTable(Table):
             in-progress operation (e.g. appending new data) and these files will not
             be deleted unless they are at least 7 days old. If delete_unverified is True
             then these files will be deleted regardless of their age.
+
+            .. warning::
+
+                This should only be set to True if you can guarantee that no other
+                process is currently working on this dataset. Otherwise the dataset
+                could be put into a corrupted state.
+
         retrain: bool, default False
             This parameter is no longer used and is deprecated.
 
-        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
+        The frequency an application should 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
@@ -3613,19 +3653,47 @@ class AsyncTable:
         """
         Prewarm an index in the table.
 
+        This is a hint to the database that the index will be accessed in the
+        future and should be loaded into memory if possible.  This can reduce
+        cold-start latency for subsequent queries.
+
+        This call initiates prewarming and returns once the request is accepted.
+        It is idempotent and safe to call from multiple clients concurrently.
+
+        It is generally wasteful to call this if the index does not fit into the
+        available cache.  Not all index types support prewarming; unsupported
+        indices will silently ignore the request.
+
         Parameters
         ----------
         name: str
             The name of the index to prewarm
-
-        Notes
-        -----
-        This will load the index into memory.  This may reduce the cold-start time for
-        future queries.  If the index does not fit in the cache then this call may be
-        wasteful.
         """
         await self._inner.prewarm_index(name)
 
+    async def prewarm_data(self, columns: Optional[List[str]] = None) -> None:
+        """
+        Prewarm data for the table.
+
+        This is a hint to the database that the given columns will be accessed
+        in the future and the database should prefetch the data if possible.
+        Currently only supported on remote tables.
+
+        This call initiates prewarming and returns once the request is accepted.
+        It is idempotent and safe to call from multiple clients concurrently.
+
+        This operation has a large upfront cost but can speed up future queries
+        that need to fetch the given columns.  Large columns such as embeddings
+        or binary data may not be practical to prewarm.  This feature is intended
+        for workloads that issue many queries against the same columns.
+
+        Parameters
+        ----------
+        columns: list of str, optional
+            The columns to prewarm. If None, all columns are prewarmed.
+        """
+        await self._inner.prewarm_data(columns)
+
     async def wait_for_index(
         self, index_names: Iterable[str], timeout: timedelta = timedelta(seconds=300)
     ) -> None:
@@ -4552,22 +4620,17 @@ class AsyncTable:
             in-progress operation (e.g. appending new data) and these files will not
             be deleted unless they are at least 7 days old. If delete_unverified is True
             then these files will be deleted regardless of their age.
+
+            .. warning::
+
+                This should only be set to True if you can guarantee that no other
+                process is currently working on this dataset. Otherwise the dataset
+                could be put into a corrupted state.
+
         retrain: bool, default False
             This parameter is no longer used and is deprecated.
 
-        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
+        The frequency an application should 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

python/python/tests/test_namespace_integration.py

@@ -147,7 +147,12 @@ class TrackingNamespace(LanceNamespace):
         This simulates a credential rotation system where each call returns
         new credentials that expire after credential_expires_in_seconds.
         """
-        modified = copy.deepcopy(storage_options) if storage_options else {}
+        # Start from base storage options (endpoint, region, allow_http, etc.)
+        # because DirectoryNamespace returns None for storage_options from
+        # describe_table/declare_table when no credential vendor is configured.
+        modified = copy.deepcopy(self.base_storage_options)
+        if storage_options:
+            modified.update(storage_options)
 
         # Increment credentials to simulate rotation
         modified["aws_access_key_id"] = f"AKID_{count}"

python/python/tests/test_table.py

@@ -326,6 +326,24 @@ def test_add_struct(mem_db: DBConnection):
     table = mem_db.create_table("test2", schema=schema)
     table.add(data)
 
+    struct_type = pa.struct(
+        [
+            ("b", pa.int64()),
+            ("a", pa.int64()),
+        ]
+    )
+    expected = pa.table(
+        {
+            "s_list": [
+                [
+                    pa.scalar({"b": 1, "a": 2}, type=struct_type),
+                    pa.scalar({"b": 4, "a": None}, type=struct_type),
+                ]
+            ],
+        }
+    )
+    assert table.to_arrow() == expected
+
 
 def test_add_subschema(mem_db: DBConnection):
     schema = pa.schema(

python/src/connection.rs

@@ -17,7 +17,8 @@ use pyo3::{
 use pyo3_async_runtimes::tokio::future_into_py;
 
 use crate::{
-    error::PythonErrorExt, storage_options::py_object_to_storage_options_provider, table::Table,
+    error::PythonErrorExt, namespace::extract_namespace_arc,
+    storage_options::py_object_to_storage_options_provider, table::Table,
 };
 
 #[pyclass]
@@ -182,7 +183,8 @@ impl Connection {
         })
     }
 
-    #[pyo3(signature = (name, namespace=vec![], storage_options = None, storage_options_provider=None, index_cache_size = None, location=None))]
+    #[allow(clippy::too_many_arguments)]
+    #[pyo3(signature = (name, namespace=vec![], storage_options = None, storage_options_provider=None, index_cache_size = None, location=None, namespace_client=None, managed_versioning=None))]
     pub fn open_table(
         self_: PyRef<'_, Self>,
         name: String,
@@ -191,11 +193,13 @@ impl Connection {
         storage_options_provider: Option<Py<PyAny>>,
         index_cache_size: Option<u32>,
         location: Option<String>,
+        namespace_client: Option<Py<PyAny>>,
+        managed_versioning: Option<bool>,
     ) -> PyResult<Bound<'_, PyAny>> {
         let inner = self_.get_inner()?.clone();
 
         let mut builder = inner.open_table(name);
-        builder = builder.namespace(namespace);
+        builder = builder.namespace(namespace.clone());
         if let Some(storage_options) = storage_options {
             builder = builder.storage_options(storage_options);
         }
@@ -209,6 +213,20 @@ impl Connection {
         if let Some(location) = location {
             builder = builder.location(location);
         }
+        // Extract namespace client from Python object if provided
+        let ns_client = if let Some(ns_obj) = namespace_client {
+            let py = self_.py();
+            Some(extract_namespace_arc(py, ns_obj)?)
+        } else {
+            None
+        };
+        if let Some(ns_client) = ns_client {
+            builder = builder.namespace_client(ns_client);
+        }
+        // Pass managed_versioning if provided to avoid redundant describe_table call
+        if let Some(enabled) = managed_versioning {
+            builder = builder.managed_versioning(enabled);
+        }
 
         future_into_py(self_.py(), async move {
             let table = builder.execute().await.infer_error()?;

python/src/lib.rs

@@ -23,6 +23,7 @@ pub mod connection;
 pub mod error;
 pub mod header;
 pub mod index;
+pub mod namespace;
 pub mod permutation;
 pub mod query;
 pub mod session;

python/src/namespace.rs

@@ -0,0 +1,696 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: Copyright The LanceDB Authors
+
+//! Namespace utilities for Python bindings
+
+use std::collections::HashMap;
+use std::sync::Arc;
+
+use async_trait::async_trait;
+use bytes::Bytes;
+use lance_namespace::LanceNamespace as LanceNamespaceTrait;
+use lance_namespace::models::*;
+use pyo3::prelude::*;
+use pyo3::types::PyDict;
+
+/// Wrapper that allows any Python object implementing LanceNamespace protocol
+/// to be used as a Rust LanceNamespace.
+///
+/// This is similar to PyLanceNamespace in lance's Python bindings - it wraps a Python
+/// object and calls back into Python when namespace methods are invoked.
+pub struct PyLanceNamespace {
+    py_namespace: Arc<Py<PyAny>>,
+    namespace_id: String,
+}
+
+impl PyLanceNamespace {
+    /// Create a new PyLanceNamespace wrapper around a Python namespace object.
+    pub fn new(_py: Python<'_>, py_namespace: &Bound<'_, PyAny>) -> PyResult<Self> {
+        let namespace_id = py_namespace
+            .call_method0("namespace_id")?
+            .extract::<String>()?;
+
+        Ok(Self {
+            py_namespace: Arc::new(py_namespace.clone().unbind()),
+            namespace_id,
+        })
+    }
+
+    /// Create an Arc<dyn LanceNamespace> from a Python namespace object.
+    pub fn create_arc(
+        py: Python<'_>,
+        py_namespace: &Bound<'_, PyAny>,
+    ) -> PyResult<Arc<dyn LanceNamespaceTrait>> {
+        let wrapper = Self::new(py, py_namespace)?;
+        Ok(Arc::new(wrapper))
+    }
+}
+
+impl std::fmt::Debug for PyLanceNamespace {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "PyLanceNamespace {{ id: {} }}", self.namespace_id)
+    }
+}
+
+/// Get or create the DictWithModelDump class in Python.
+/// This class acts like a dict but also has model_dump() method.
+/// This allows it to work with both:
+/// - depythonize (which expects a dict/Mapping)
+/// - Python code that calls .model_dump() (like DirectoryNamespace wrapper)
+fn get_dict_with_model_dump_class(py: Python<'_>) -> PyResult<Bound<'_, PyAny>> {
+    // Use a module-level cache via __builtins__
+    let builtins = py.import("builtins")?;
+    if builtins.hasattr("_DictWithModelDump")? {
+        return builtins.getattr("_DictWithModelDump");
+    }
+
+    // Create the class using exec
+    let locals = PyDict::new(py);
+    py.run(
+        c"class DictWithModelDump(dict):
+    def model_dump(self):
+        return dict(self)",
+        None,
+        Some(&locals),
+    )?;
+    let class = locals.get_item("DictWithModelDump")?.ok_or_else(|| {
+        pyo3::exceptions::PyRuntimeError::new_err("Failed to create DictWithModelDump class")
+    })?;
+
+    // Cache it
+    builtins.setattr("_DictWithModelDump", &class)?;
+    Ok(class)
+}
+
+/// Helper to call a Python namespace method with JSON serialization.
+/// For methods that take a request and return a response.
+/// Uses DictWithModelDump to pass a dict that also has model_dump() method,
+/// making it compatible with both depythonize and Python wrappers.
+async fn call_py_method<Req, Resp>(
+    py_namespace: Arc<Py<PyAny>>,
+    method_name: &'static str,
+    request: Req,
+) -> lance_core::Result<Resp>
+where
+    Req: serde::Serialize + Send + 'static,
+    Resp: serde::de::DeserializeOwned + Send + 'static,
+{
+    let request_json = serde_json::to_string(&request).map_err(|e| {
+        lance_core::Error::io(format!(
+            "Failed to serialize request for {}: {}",
+            method_name, e
+        ))
+    })?;
+
+    let response_json = tokio::task::spawn_blocking(move || {
+        Python::attach(|py| {
+            let json_module = py.import("json")?;
+            let request_dict = json_module.call_method1("loads", (&request_json,))?;
+
+            // Wrap dict in DictWithModelDump so it works with both depythonize and .model_dump()
+            let dict_class = get_dict_with_model_dump_class(py)?;
+            let request_arg = dict_class.call1((request_dict,))?;
+
+            // Call the Python method
+            let result = py_namespace.call_method1(py, method_name, (request_arg,))?;
+
+            // Convert response to dict, then to JSON
+            // Pydantic models have model_dump() method
+            let result_dict = if result.bind(py).hasattr("model_dump")? {
+                result.call_method0(py, "model_dump")?
+            } else {
+                result
+            };
+            let response_json: String = json_module
+                .call_method1("dumps", (result_dict,))?
+                .extract()?;
+            Ok::<_, PyErr>(response_json)
+        })
+    })
+    .await
+    .map_err(|e| lance_core::Error::io(format!("Task join error for {}: {}", method_name, e)))?
+    .map_err(|e: PyErr| lance_core::Error::io(format!("Python error in {}: {}", method_name, e)))?;
+
+    serde_json::from_str(&response_json).map_err(|e| {
+        lance_core::Error::io(format!(
+            "Failed to deserialize response from {}: {}",
+            method_name, e
+        ))
+    })
+}
+
+/// Helper for methods that return () on success
+async fn call_py_method_unit<Req>(
+    py_namespace: Arc<Py<PyAny>>,
+    method_name: &'static str,
+    request: Req,
+) -> lance_core::Result<()>
+where
+    Req: serde::Serialize + Send + 'static,
+{
+    let request_json = serde_json::to_string(&request).map_err(|e| {
+        lance_core::Error::io(format!(
+            "Failed to serialize request for {}: {}",
+            method_name, e
+        ))
+    })?;
+
+    tokio::task::spawn_blocking(move || {
+        Python::attach(|py| {
+            let json_module = py.import("json")?;
+            let request_dict = json_module.call_method1("loads", (&request_json,))?;
+
+            // Wrap dict in DictWithModelDump
+            let dict_class = get_dict_with_model_dump_class(py)?;
+            let request_arg = dict_class.call1((request_dict,))?;
+
+            // Call the Python method
+            py_namespace.call_method1(py, method_name, (request_arg,))?;
+            Ok::<_, PyErr>(())
+        })
+    })
+    .await
+    .map_err(|e| lance_core::Error::io(format!("Task join error for {}: {}", method_name, e)))?
+    .map_err(|e: PyErr| lance_core::Error::io(format!("Python error in {}: {}", method_name, e)))
+}
+
+/// Helper for methods that return a primitive type
+async fn call_py_method_primitive<Req, Resp>(
+    py_namespace: Arc<Py<PyAny>>,
+    method_name: &'static str,
+    request: Req,
+) -> lance_core::Result<Resp>
+where
+    Req: serde::Serialize + Send + 'static,
+    Resp: for<'py> pyo3::FromPyObject<'py> + Send + 'static,
+{
+    let request_json = serde_json::to_string(&request).map_err(|e| {
+        lance_core::Error::io(format!(
+            "Failed to serialize request for {}: {}",
+            method_name, e
+        ))
+    })?;
+
+    tokio::task::spawn_blocking(move || {
+        Python::attach(|py| {
+            let json_module = py.import("json")?;
+            let request_dict = json_module.call_method1("loads", (&request_json,))?;
+
+            // Wrap dict in DictWithModelDump
+            let dict_class = get_dict_with_model_dump_class(py)?;
+            let request_arg = dict_class.call1((request_dict,))?;
+
+            // Call the Python method
+            let result = py_namespace.call_method1(py, method_name, (request_arg,))?;
+            let value: Resp = result.extract(py)?;
+            Ok::<_, PyErr>(value)
+        })
+    })
+    .await
+    .map_err(|e| lance_core::Error::io(format!("Task join error for {}: {}", method_name, e)))?
+    .map_err(|e: PyErr| lance_core::Error::io(format!("Python error in {}: {}", method_name, e)))
+}
+
+/// Helper for methods that return Bytes
+async fn call_py_method_bytes<Req>(
+    py_namespace: Arc<Py<PyAny>>,
+    method_name: &'static str,
+    request: Req,
+) -> lance_core::Result<Bytes>
+where
+    Req: serde::Serialize + Send + 'static,
+{
+    let request_json = serde_json::to_string(&request).map_err(|e| {
+        lance_core::Error::io(format!(
+            "Failed to serialize request for {}: {}",
+            method_name, e
+        ))
+    })?;
+
+    tokio::task::spawn_blocking(move || {
+        Python::attach(|py| {
+            let json_module = py.import("json")?;
+            let request_dict = json_module.call_method1("loads", (&request_json,))?;
+
+            // Wrap dict in DictWithModelDump
+            let dict_class = get_dict_with_model_dump_class(py)?;
+            let request_arg = dict_class.call1((request_dict,))?;
+
+            // Call the Python method
+            let result = py_namespace.call_method1(py, method_name, (request_arg,))?;
+            let bytes_data: Vec<u8> = result.extract(py)?;
+            Ok::<_, PyErr>(Bytes::from(bytes_data))
+        })
+    })
+    .await
+    .map_err(|e| lance_core::Error::io(format!("Task join error for {}: {}", method_name, e)))?
+    .map_err(|e: PyErr| lance_core::Error::io(format!("Python error in {}: {}", method_name, e)))
+}
+
+/// Helper for methods that take request + data and return a response
+async fn call_py_method_with_data<Req, Resp>(
+    py_namespace: Arc<Py<PyAny>>,
+    method_name: &'static str,
+    request: Req,
+    data: Bytes,
+) -> lance_core::Result<Resp>
+where
+    Req: serde::Serialize + Send + 'static,
+    Resp: serde::de::DeserializeOwned + Send + 'static,
+{
+    let request_json = serde_json::to_string(&request).map_err(|e| {
+        lance_core::Error::io(format!(
+            "Failed to serialize request for {}: {}",
+            method_name, e
+        ))
+    })?;
+
+    let response_json = tokio::task::spawn_blocking(move || {
+        Python::attach(|py| {
+            let json_module = py.import("json")?;
+            let request_dict = json_module.call_method1("loads", (&request_json,))?;
+
+            // Wrap dict in DictWithModelDump
+            let dict_class = get_dict_with_model_dump_class(py)?;
+            let request_arg = dict_class.call1((request_dict,))?;
+
+            // Pass request and bytes to Python method
+            let py_bytes = pyo3::types::PyBytes::new(py, &data);
+            let result = py_namespace.call_method1(py, method_name, (request_arg, py_bytes))?;
+
+            // Convert response dict to JSON
+            let response_json: String = json_module.call_method1("dumps", (result,))?.extract()?;
+            Ok::<_, PyErr>(response_json)
+        })
+    })
+    .await
+    .map_err(|e| lance_core::Error::io(format!("Task join error for {}: {}", method_name, e)))?
+    .map_err(|e: PyErr| lance_core::Error::io(format!("Python error in {}: {}", method_name, e)))?;
+
+    serde_json::from_str(&response_json).map_err(|e| {
+        lance_core::Error::io(format!(
+            "Failed to deserialize response from {}: {}",
+            method_name, e
+        ))
+    })
+}
+
+#[async_trait]
+impl LanceNamespaceTrait for PyLanceNamespace {
+    fn namespace_id(&self) -> String {
+        self.namespace_id.clone()
+    }
+
+    async fn list_namespaces(
+        &self,
+        request: ListNamespacesRequest,
+    ) -> lance_core::Result<ListNamespacesResponse> {
+        call_py_method(self.py_namespace.clone(), "list_namespaces", request).await
+    }
+
+    async fn describe_namespace(
+        &self,
+        request: DescribeNamespaceRequest,
+    ) -> lance_core::Result<DescribeNamespaceResponse> {
+        call_py_method(self.py_namespace.clone(), "describe_namespace", request).await
+    }
+
+    async fn create_namespace(
+        &self,
+        request: CreateNamespaceRequest,
+    ) -> lance_core::Result<CreateNamespaceResponse> {
+        call_py_method(self.py_namespace.clone(), "create_namespace", request).await
+    }
+
+    async fn drop_namespace(
+        &self,
+        request: DropNamespaceRequest,
+    ) -> lance_core::Result<DropNamespaceResponse> {
+        call_py_method(self.py_namespace.clone(), "drop_namespace", request).await
+    }
+
+    async fn namespace_exists(&self, request: NamespaceExistsRequest) -> lance_core::Result<()> {
+        call_py_method_unit(self.py_namespace.clone(), "namespace_exists", request).await
+    }
+
+    async fn list_tables(
+        &self,
+        request: ListTablesRequest,
+    ) -> lance_core::Result<ListTablesResponse> {
+        call_py_method(self.py_namespace.clone(), "list_tables", request).await
+    }
+
+    async fn describe_table(
+        &self,
+        request: DescribeTableRequest,
+    ) -> lance_core::Result<DescribeTableResponse> {
+        call_py_method(self.py_namespace.clone(), "describe_table", request).await
+    }
+
+    async fn register_table(
+        &self,
+        request: RegisterTableRequest,
+    ) -> lance_core::Result<RegisterTableResponse> {
+        call_py_method(self.py_namespace.clone(), "register_table", request).await
+    }
+
+    async fn table_exists(&self, request: TableExistsRequest) -> lance_core::Result<()> {
+        call_py_method_unit(self.py_namespace.clone(), "table_exists", request).await
+    }
+
+    async fn drop_table(&self, request: DropTableRequest) -> lance_core::Result<DropTableResponse> {
+        call_py_method(self.py_namespace.clone(), "drop_table", request).await
+    }
+
+    async fn deregister_table(
+        &self,
+        request: DeregisterTableRequest,
+    ) -> lance_core::Result<DeregisterTableResponse> {
+        call_py_method(self.py_namespace.clone(), "deregister_table", request).await
+    }
+
+    async fn count_table_rows(&self, request: CountTableRowsRequest) -> lance_core::Result<i64> {
+        call_py_method_primitive(self.py_namespace.clone(), "count_table_rows", request).await
+    }
+
+    async fn create_table(
+        &self,
+        request: CreateTableRequest,
+        request_data: Bytes,
+    ) -> lance_core::Result<CreateTableResponse> {
+        call_py_method_with_data(
+            self.py_namespace.clone(),
+            "create_table",
+            request,
+            request_data,
+        )
+        .await
+    }
+
+    async fn declare_table(
+        &self,
+        request: DeclareTableRequest,
+    ) -> lance_core::Result<DeclareTableResponse> {
+        call_py_method(self.py_namespace.clone(), "declare_table", request).await
+    }
+
+    async fn insert_into_table(
+        &self,
+        request: InsertIntoTableRequest,
+        request_data: Bytes,
+    ) -> lance_core::Result<InsertIntoTableResponse> {
+        call_py_method_with_data(
+            self.py_namespace.clone(),
+            "insert_into_table",
+            request,
+            request_data,
+        )
+        .await
+    }
+
+    async fn merge_insert_into_table(
+        &self,
+        request: MergeInsertIntoTableRequest,
+        request_data: Bytes,
+    ) -> lance_core::Result<MergeInsertIntoTableResponse> {
+        call_py_method_with_data(
+            self.py_namespace.clone(),
+            "merge_insert_into_table",
+            request,
+            request_data,
+        )
+        .await
+    }
+
+    async fn update_table(
+        &self,
+        request: UpdateTableRequest,
+    ) -> lance_core::Result<UpdateTableResponse> {
+        call_py_method(self.py_namespace.clone(), "update_table", request).await
+    }
+
+    async fn delete_from_table(
+        &self,
+        request: DeleteFromTableRequest,
+    ) -> lance_core::Result<DeleteFromTableResponse> {
+        call_py_method(self.py_namespace.clone(), "delete_from_table", request).await
+    }
+
+    async fn query_table(&self, request: QueryTableRequest) -> lance_core::Result<Bytes> {
+        call_py_method_bytes(self.py_namespace.clone(), "query_table", request).await
+    }
+
+    async fn create_table_index(
+        &self,
+        request: CreateTableIndexRequest,
+    ) -> lance_core::Result<CreateTableIndexResponse> {
+        call_py_method(self.py_namespace.clone(), "create_table_index", request).await
+    }
+
+    async fn list_table_indices(
+        &self,
+        request: ListTableIndicesRequest,
+    ) -> lance_core::Result<ListTableIndicesResponse> {
+        call_py_method(self.py_namespace.clone(), "list_table_indices", request).await
+    }
+
+    async fn describe_table_index_stats(
+        &self,
+        request: DescribeTableIndexStatsRequest,
+    ) -> lance_core::Result<DescribeTableIndexStatsResponse> {
+        call_py_method(
+            self.py_namespace.clone(),
+            "describe_table_index_stats",
+            request,
+        )
+        .await
+    }
+
+    async fn describe_transaction(
+        &self,
+        request: DescribeTransactionRequest,
+    ) -> lance_core::Result<DescribeTransactionResponse> {
+        call_py_method(self.py_namespace.clone(), "describe_transaction", request).await
+    }
+
+    async fn alter_transaction(
+        &self,
+        request: AlterTransactionRequest,
+    ) -> lance_core::Result<AlterTransactionResponse> {
+        call_py_method(self.py_namespace.clone(), "alter_transaction", request).await
+    }
+
+    async fn create_table_scalar_index(
+        &self,
+        request: CreateTableIndexRequest,
+    ) -> lance_core::Result<CreateTableScalarIndexResponse> {
+        call_py_method(
+            self.py_namespace.clone(),
+            "create_table_scalar_index",
+            request,
+        )
+        .await
+    }
+
+    async fn drop_table_index(
+        &self,
+        request: DropTableIndexRequest,
+    ) -> lance_core::Result<DropTableIndexResponse> {
+        call_py_method(self.py_namespace.clone(), "drop_table_index", request).await
+    }
+
+    async fn list_all_tables(
+        &self,
+        request: ListTablesRequest,
+    ) -> lance_core::Result<ListTablesResponse> {
+        call_py_method(self.py_namespace.clone(), "list_all_tables", request).await
+    }
+
+    async fn restore_table(
+        &self,
+        request: RestoreTableRequest,
+    ) -> lance_core::Result<RestoreTableResponse> {
+        call_py_method(self.py_namespace.clone(), "restore_table", request).await
+    }
+
+    async fn rename_table(
+        &self,
+        request: RenameTableRequest,
+    ) -> lance_core::Result<RenameTableResponse> {
+        call_py_method(self.py_namespace.clone(), "rename_table", request).await
+    }
+
+    async fn list_table_versions(
+        &self,
+        request: ListTableVersionsRequest,
+    ) -> lance_core::Result<ListTableVersionsResponse> {
+        call_py_method(self.py_namespace.clone(), "list_table_versions", request).await
+    }
+
+    async fn create_table_version(
+        &self,
+        request: CreateTableVersionRequest,
+    ) -> lance_core::Result<CreateTableVersionResponse> {
+        call_py_method(self.py_namespace.clone(), "create_table_version", request).await
+    }
+
+    async fn describe_table_version(
+        &self,
+        request: DescribeTableVersionRequest,
+    ) -> lance_core::Result<DescribeTableVersionResponse> {
+        call_py_method(self.py_namespace.clone(), "describe_table_version", request).await
+    }
+
+    async fn batch_delete_table_versions(
+        &self,
+        request: BatchDeleteTableVersionsRequest,
+    ) -> lance_core::Result<BatchDeleteTableVersionsResponse> {
+        call_py_method(
+            self.py_namespace.clone(),
+            "batch_delete_table_versions",
+            request,
+        )
+        .await
+    }
+
+    async fn update_table_schema_metadata(
+        &self,
+        request: UpdateTableSchemaMetadataRequest,
+    ) -> lance_core::Result<UpdateTableSchemaMetadataResponse> {
+        call_py_method(
+            self.py_namespace.clone(),
+            "update_table_schema_metadata",
+            request,
+        )
+        .await
+    }
+
+    async fn get_table_stats(
+        &self,
+        request: GetTableStatsRequest,
+    ) -> lance_core::Result<GetTableStatsResponse> {
+        call_py_method(self.py_namespace.clone(), "get_table_stats", request).await
+    }
+
+    async fn explain_table_query_plan(
+        &self,
+        request: ExplainTableQueryPlanRequest,
+    ) -> lance_core::Result<String> {
+        call_py_method_primitive(
+            self.py_namespace.clone(),
+            "explain_table_query_plan",
+            request,
+        )
+        .await
+    }
+
+    async fn analyze_table_query_plan(
+        &self,
+        request: AnalyzeTableQueryPlanRequest,
+    ) -> lance_core::Result<String> {
+        call_py_method_primitive(
+            self.py_namespace.clone(),
+            "analyze_table_query_plan",
+            request,
+        )
+        .await
+    }
+
+    async fn alter_table_add_columns(
+        &self,
+        request: AlterTableAddColumnsRequest,
+    ) -> lance_core::Result<AlterTableAddColumnsResponse> {
+        call_py_method(
+            self.py_namespace.clone(),
+            "alter_table_add_columns",
+            request,
+        )
+        .await
+    }
+
+    async fn alter_table_alter_columns(
+        &self,
+        request: AlterTableAlterColumnsRequest,
+    ) -> lance_core::Result<AlterTableAlterColumnsResponse> {
+        call_py_method(
+            self.py_namespace.clone(),
+            "alter_table_alter_columns",
+            request,
+        )
+        .await
+    }
+
+    async fn alter_table_drop_columns(
+        &self,
+        request: AlterTableDropColumnsRequest,
+    ) -> lance_core::Result<AlterTableDropColumnsResponse> {
+        call_py_method(
+            self.py_namespace.clone(),
+            "alter_table_drop_columns",
+            request,
+        )
+        .await
+    }
+
+    async fn list_table_tags(
+        &self,
+        request: ListTableTagsRequest,
+    ) -> lance_core::Result<ListTableTagsResponse> {
+        call_py_method(self.py_namespace.clone(), "list_table_tags", request).await
+    }
+
+    async fn create_table_tag(
+        &self,
+        request: CreateTableTagRequest,
+    ) -> lance_core::Result<CreateTableTagResponse> {
+        call_py_method(self.py_namespace.clone(), "create_table_tag", request).await
+    }
+
+    async fn delete_table_tag(
+        &self,
+        request: DeleteTableTagRequest,
+    ) -> lance_core::Result<DeleteTableTagResponse> {
+        call_py_method(self.py_namespace.clone(), "delete_table_tag", request).await
+    }
+
+    async fn update_table_tag(
+        &self,
+        request: UpdateTableTagRequest,
+    ) -> lance_core::Result<UpdateTableTagResponse> {
+        call_py_method(self.py_namespace.clone(), "update_table_tag", request).await
+    }
+
+    async fn get_table_tag_version(
+        &self,
+        request: GetTableTagVersionRequest,
+    ) -> lance_core::Result<GetTableTagVersionResponse> {
+        call_py_method(self.py_namespace.clone(), "get_table_tag_version", request).await
+    }
+}
+
+/// Convert Python dict to HashMap<String, String>
+#[allow(dead_code)]
+fn dict_to_hashmap(dict: &Bound<'_, PyDict>) -> PyResult<HashMap<String, String>> {
+    let mut map = HashMap::new();
+    for (key, value) in dict.iter() {
+        let key_str: String = key.extract()?;
+        let value_str: String = value.extract()?;
+        map.insert(key_str, value_str);
+    }
+    Ok(map)
+}
+
+/// Extract an Arc<dyn LanceNamespace> from a Python namespace object.
+///
+/// This function wraps any Python namespace object with PyLanceNamespace.
+/// The PyLanceNamespace wrapper uses DictWithModelDump to pass requests,
+/// which works with both:
+/// - Native namespaces (DirectoryNamespace, RestNamespace) that use depythonize (expects dict)
+/// - Custom Python implementations that call .model_dump() on the request
+pub fn extract_namespace_arc(
+    py: Python<'_>,
+    ns: Py<PyAny>,
+) -> PyResult<Arc<dyn LanceNamespaceTrait>> {
+    let ns_ref = ns.bind(py);
+    PyLanceNamespace::create_arc(py, ns_ref)
+}

python/src/query.rs

@@ -316,6 +316,19 @@ impl<'py> IntoPyObject<'py> for PySelect {
             Select::All => Ok(py.None().into_bound(py).into_any()),
             Select::Columns(columns) => Ok(columns.into_pyobject(py)?.into_any()),
             Select::Dynamic(columns) => Ok(columns.into_pyobject(py)?.into_any()),
+            Select::Expr(pairs) => {
+                // Serialize DataFusion Expr -> SQL string so Python sees the same
+                // format as Select::Dynamic: a list of (name, sql_string) tuples.
+                let sql_pairs: PyResult<Vec<(String, String)>> = pairs
+                    .into_iter()
+                    .map(|(name, expr)| {
+                        lancedb::expr::expr_to_sql_string(&expr)
+                            .map(|sql| (name, sql))
+                            .map_err(|e| PyRuntimeError::new_err(e.to_string()))
+                    })
+                    .collect();
+                Ok(sql_pairs?.into_pyobject(py)?.into_any())
+            }
         }
     }
 }

python/src/storage_options.rs

@@ -66,13 +66,10 @@ impl StorageOptionsProvider for PyStorageOptionsProviderWrapper {
                     .inner
                     .bind(py)
                     .call_method0("fetch_storage_options")
-                    .map_err(|e| lance_core::Error::IO {
-                        source: Box::new(std::io::Error::other(format!(
-                            "Failed to call fetch_storage_options: {}",
-                            e
-                        ))),
-                        location: snafu::location!(),
-                    })?;
+                    .map_err(|e| lance_core::Error::io_source(Box::new(std::io::Error::other(format!(
+                        "Failed to call fetch_storage_options: {}",
+                        e
+                    )))))?;
 
                 // If result is None, return None
                 if result.is_none() {
@@ -81,26 +78,19 @@ impl StorageOptionsProvider for PyStorageOptionsProviderWrapper {
 
                 // Extract the result dict - should be a flat Map<String, String>
                 let result_dict = result.downcast::<PyDict>().map_err(|_| {
-                    lance_core::Error::InvalidInput {
-                        source: "fetch_storage_options() must return None or a dict of string key-value pairs".into(),
-                        location: snafu::location!(),
-                    }
+                    lance_core::Error::invalid_input(
+                        "fetch_storage_options() must return a dict of string key-value pairs or None",
+                    )
                 })?;
 
                 // Convert all entries to HashMap<String, String>
                 let mut storage_options = HashMap::new();
                 for (key, value) in result_dict.iter() {
                     let key_str: String = key.extract().map_err(|e| {
-                        lance_core::Error::InvalidInput {
-                            source: format!("Storage option key must be a string: {}", e).into(),
-                            location: snafu::location!(),
-                        }
+                        lance_core::Error::invalid_input(format!("Storage option key must be a string: {}", e))
                     })?;
                     let value_str: String = value.extract().map_err(|e| {
-                        lance_core::Error::InvalidInput {
-                            source: format!("Storage option value must be a string: {}", e).into(),
-                            location: snafu::location!(),
-                        }
+                        lance_core::Error::invalid_input(format!("Storage option value must be a string: {}", e))
                     })?;
                     storage_options.insert(key_str, value_str);
                 }
@@ -109,13 +99,10 @@ impl StorageOptionsProvider for PyStorageOptionsProviderWrapper {
             })
         })
         .await
-        .map_err(|e| lance_core::Error::IO {
-            source: Box::new(std::io::Error::other(format!(
-                "Task join error: {}",
-                e
-            ))),
-            location: snafu::location!(),
-        })?
+        .map_err(|e| lance_core::Error::io_source(Box::new(std::io::Error::other(format!(
+            "Task join error: {}",
+            e
+        )))))?
     }
 
     fn provider_id(&self) -> String {

python/src/table.rs

@@ -426,6 +426,17 @@ impl Table {
         })
     }
 
+    pub fn prewarm_data(
+        self_: PyRef<'_, Self>,
+        columns: Option<Vec<String>>,
+    ) -> PyResult<Bound<'_, PyAny>> {
+        let inner = self_.inner_ref()?.clone();
+        future_into_py(self_.py(), async move {
+            inner.prewarm_data(columns).await.infer_error()?;
+            Ok(())
+        })
+    }
+
     pub fn list_indices(self_: PyRef<'_, Self>) -> PyResult<Bound<'_, PyAny>> {
         let inner = self_.inner_ref()?.clone();
         future_into_py(self_.py(), async move {

python/uv.lock

@@ -2006,7 +2006,7 @@ requires-dist = [
     { name = "botocore", marker = "extra == 'embeddings'", specifier = ">=1.31.57" },
     { name = "cohere", marker = "extra == 'embeddings'" },
     { name = "colpali-engine", marker = "extra == 'embeddings'", specifier = ">=0.3.10" },
-    { name = "datafusion", marker = "extra == 'tests'" },
+    { name = "datafusion", marker = "extra == 'tests'", specifier = "<52" },
     { name = "deprecation" },
     { name = "duckdb", marker = "extra == 'tests'" },
     { name = "google-generativeai", marker = "extra == 'embeddings'" },
@@ -2035,7 +2035,7 @@ requires-dist = [
     { name = "pyarrow-stubs", marker = "extra == 'tests'" },
     { name = "pydantic", specifier = ">=1.10" },
     { name = "pylance", marker = "extra == 'pylance'", specifier = ">=1.0.0b14" },
-    { name = "pylance", marker = "extra == 'tests'", specifier = ">=1.0.0b14" },
+    { name = "pylance", marker = "extra == 'tests'", specifier = ">=1.0.0b14,<3.0.0" },
     { name = "pyright", marker = "extra == 'dev'" },
     { name = "pytest", marker = "extra == 'tests'" },
     { name = "pytest-asyncio", marker = "extra == 'tests'" },

rust/lancedb/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "lancedb"
-version = "0.27.0-beta.3"
+version = "0.27.0-beta.5"
 edition.workspace = true
 description = "LanceDB: A serverless, low-latency vector database for AI applications"
 license.workspace = true

rust/lancedb/README.md

@@ -1,4 +1,4 @@
-# LanceDB Rust
+# LanceDB Rust SDK
 
 <a href="https://crates.io/crates/vectordb">![img](https://img.shields.io/crates/v/vectordb)</a>
 <a href="https://docs.rs/vectordb/latest/vectordb/">![Docs.rs](https://img.shields.io/docsrs/vectordb)</a>

rust/lancedb/src/connection.rs

@@ -136,6 +136,7 @@ impl OpenTableBuilder {
                 lance_read_params: None,
                 location: None,
                 namespace_client: None,
+                managed_versioning: None,
             },
             embedding_registry,
         }
@@ -235,6 +236,29 @@ impl OpenTableBuilder {
         self
     }
 
+    /// Set a namespace client for managed versioning support.
+    ///
+    /// When a namespace client is provided and the table has `managed_versioning` enabled,
+    /// the table will use the namespace's commit handler to notify the namespace of
+    /// version changes. This enables features like event emission for table modifications.
+    pub fn namespace_client(mut self, client: Arc<dyn lance_namespace::LanceNamespace>) -> Self {
+        self.request.namespace_client = Some(client);
+        self
+    }
+
+    /// Set whether managed versioning is enabled for this table.
+    ///
+    /// When set to `Some(true)`, the table will use namespace-managed commits.
+    /// When set to `Some(false)`, the table will use local commits even if namespace_client is set.
+    /// When set to `None` (default), the value will be fetched from the namespace if namespace_client is set.
+    ///
+    /// This is typically set when the caller has already queried the namespace and knows the
+    /// managed_versioning status, avoiding a redundant describe_table call.
+    pub fn managed_versioning(mut self, enabled: bool) -> Self {
+        self.request.managed_versioning = Some(enabled);
+        self
+    }
+
     /// Open the table
     pub async fn execute(self) -> Result<Table> {
         let table = self.parent.open_table(self.request).await?;
@@ -294,6 +318,12 @@ impl CloneTableBuilder {
         self
     }
 
+    /// Set a namespace client for managed versioning support.
+    pub fn namespace_client(mut self, client: Arc<dyn lance_namespace::LanceNamespace>) -> Self {
+        self.request.namespace_client = Some(client);
+        self
+    }
+
     /// Execute the clone operation
     pub async fn execute(self) -> Result<Table> {
         let parent = self.parent.clone();

rust/lancedb/src/database.rs

@@ -66,6 +66,10 @@ pub struct OpenTableRequest {
     /// Optional namespace client for server-side query execution.
     /// When set, queries will be executed on the namespace server instead of locally.
     pub namespace_client: Option<Arc<dyn LanceNamespace>>,
+    /// Whether managed versioning is enabled for this table.
+    /// When Some(true), the table will use namespace-managed commits instead of local commits.
+    /// When None and namespace_client is provided, the value will be fetched from the namespace.
+    pub managed_versioning: Option<bool>,
 }
 
 impl std::fmt::Debug for OpenTableRequest {
@@ -77,6 +81,7 @@ impl std::fmt::Debug for OpenTableRequest {
             .field("lance_read_params", &self.lance_read_params)
             .field("location", &self.location)
             .field("namespace_client", &self.namespace_client)
+            .field("managed_versioning", &self.managed_versioning)
             .finish()
     }
 }
@@ -161,6 +166,9 @@ pub struct CloneTableRequest {
     /// Whether to perform a shallow clone (true) or deep clone (false). Defaults to true.
     /// Currently only shallow clone is supported.
     pub is_shallow: bool,
+    /// Optional namespace client for managed versioning support.
+    /// When set, enables the commit handler to track table versions through the namespace.
+    pub namespace_client: Option<Arc<dyn LanceNamespace>>,
 }
 
 impl CloneTableRequest {
@@ -172,6 +180,7 @@ impl CloneTableRequest {
             source_version: None,
             source_tag: None,
             is_shallow: true,
+            namespace_client: None,
         }
     }
 }

rust/lancedb/src/database/listing.rs

@@ -669,6 +669,7 @@ impl ListingDatabase {
                     lance_read_params: None,
                     location: None,
                     namespace_client: None,
+                    managed_versioning: None,
                 };
                 let req = (callback)(req);
                 let table = self.open_table(req).await?;
@@ -869,6 +870,7 @@ impl Database for ListingDatabase {
             Some(write_params),
             self.read_consistency_interval,
             request.namespace_client,
+            false, // server_side_query_enabled - listing database doesn't support server-side queries
         )
         .await
         {
@@ -946,7 +948,9 @@ impl Database for ListingDatabase {
             self.store_wrapper.clone(),
             None,
             self.read_consistency_interval,
-            None,
+            request.namespace_client,
+            false, // server_side_query_enabled - listing database doesn't support server-side queries
+            None,  // managed_versioning - will be queried if namespace_client is provided
         )
         .await?;
 
@@ -1022,6 +1026,8 @@ impl Database for ListingDatabase {
                 Some(read_params),
                 self.read_consistency_interval,
                 request.namespace_client,
+                false, // server_side_query_enabled - listing database doesn't support server-side queries
+                request.managed_versioning, // Pass through managed_versioning from request
             )
             .await?,
         );
@@ -1162,6 +1168,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await
             .unwrap();
@@ -1222,6 +1229,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await
             .unwrap();
@@ -1281,6 +1289,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await;
 
@@ -1317,6 +1326,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: false, // Request deep clone
+                namespace_client: None,
             })
             .await;
 
@@ -1357,6 +1367,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await;
 
@@ -1397,6 +1408,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await;
 
@@ -1416,6 +1428,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await;
 
@@ -1452,6 +1465,7 @@ mod tests {
                 source_version: Some(1),
                 source_tag: Some("v1.0".to_string()),
                 is_shallow: true,
+                namespace_client: None,
             })
             .await;
 
@@ -1525,6 +1539,7 @@ mod tests {
                 source_version: Some(initial_version),
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await
             .unwrap();
@@ -1603,6 +1618,7 @@ mod tests {
                 source_version: None,
                 source_tag: Some("v1.0".to_string()),
                 is_shallow: true,
+                namespace_client: None,
             })
             .await
             .unwrap();
@@ -1654,6 +1670,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await
             .unwrap();
@@ -1746,6 +1763,7 @@ mod tests {
                 source_version: None,
                 source_tag: None,
                 is_shallow: true,
+                namespace_client: None,
             })
             .await
             .unwrap();

rust/lancedb/src/database/namespace.rs

@@ -7,18 +7,20 @@ use std::collections::HashMap;
 use std::sync::Arc;
 
 use async_trait::async_trait;
+use lance::io::commit::namespace_manifest::LanceNamespaceExternalManifestStore;
 use lance_io::object_store::{ObjectStoreParams, StorageOptionsAccessor};
 use lance_namespace::{
     LanceNamespace,
     models::{
-        CreateEmptyTableRequest, CreateNamespaceRequest, CreateNamespaceResponse,
-        DeclareTableRequest, DescribeNamespaceRequest, DescribeNamespaceResponse,
-        DescribeTableRequest, DropNamespaceRequest, DropNamespaceResponse, DropTableRequest,
-        ListNamespacesRequest, ListNamespacesResponse, ListTablesRequest, ListTablesResponse,
+        CreateNamespaceRequest, CreateNamespaceResponse, DeclareTableRequest,
+        DescribeNamespaceRequest, DescribeNamespaceResponse, DescribeTableRequest,
+        DropNamespaceRequest, DropNamespaceResponse, DropTableRequest, ListNamespacesRequest,
+        ListNamespacesResponse, ListTablesRequest, ListTablesResponse,
     },
 };
 use lance_namespace_impls::ConnectBuilder;
-use log::warn;
+use lance_table::io::commit::CommitHandler;
+use lance_table::io::commit::external_manifest::ExternalManifestCommitHandler;
 
 use crate::database::ReadConsistency;
 use crate::error::{Error, Result};
@@ -206,83 +208,48 @@ impl Database for LanceNamespaceDatabase {
         let mut table_id = request.namespace.clone();
         table_id.push(request.name.clone());
 
-        // Try declare_table first, falling back to create_empty_table for backwards
-        // compatibility with older namespace clients that don't support declare_table
         let declare_request = DeclareTableRequest {
             id: Some(table_id.clone()),
             ..Default::default()
         };
 
-        let (location, initial_storage_options) =
-            match self.namespace.declare_table(declare_request).await {
-                Ok(response) => {
-                    let loc = response.location.ok_or_else(|| Error::Runtime {
-                        message: "Table location is missing from declare_table response"
-                            .to_string(),
-                    })?;
-                    // Use storage options from response, fall back to self.storage_options
-                    let opts = response
-                        .storage_options
-                        .or_else(|| Some(self.storage_options.clone()))
-                        .filter(|o| !o.is_empty());
-                    (loc, opts)
-                }
-                Err(e) => {
-                    // Check if the error is "not supported" and try create_empty_table as fallback
-                    let err_str = e.to_string().to_lowercase();
-                    if err_str.contains("not supported") || err_str.contains("not implemented") {
-                        warn!(
-                            "declare_table is not supported by the namespace client, \
-                        falling back to deprecated create_empty_table. \
-                        create_empty_table is deprecated and will be removed in Lance 3.0.0. \
-                        Please upgrade your namespace client to support declare_table."
-                        );
-                        #[allow(deprecated)]
-                        let create_empty_request = CreateEmptyTableRequest {
-                            id: Some(table_id.clone()),
-                            ..Default::default()
-                        };
+        let (location, initial_storage_options, managed_versioning) = {
+            let response = self.namespace.declare_table(declare_request).await?;
+            let loc = response.location.ok_or_else(|| Error::Runtime {
+                message: "Table location is missing from declare_table response".to_string(),
+            })?;
+            // Use storage options from response, fall back to self.storage_options
+            let opts = response
+                .storage_options
+                .or_else(|| Some(self.storage_options.clone()))
+                .filter(|o| !o.is_empty());
+            (loc, opts, response.managed_versioning)
+        };
 
-                        #[allow(deprecated)]
-                        let create_response = self
-                            .namespace
-                            .create_empty_table(create_empty_request)
-                            .await
-                            .map_err(|e| Error::Runtime {
-                                message: format!("Failed to create empty table: {}", e),
-                            })?;
+        // Build write params with storage options and commit handler
+        let mut params = request.write_options.lance_write_params.unwrap_or_default();
 
-                        let loc = create_response.location.ok_or_else(|| Error::Runtime {
-                            message: "Table location is missing from create_empty_table response"
-                                .to_string(),
-                        })?;
-                        // For deprecated path, use self.storage_options
-                        let opts = if self.storage_options.is_empty() {
-                            None
-                        } else {
-                            Some(self.storage_options.clone())
-                        };
-                        (loc, opts)
-                    } else {
-                        return Err(Error::Runtime {
-                            message: format!("Failed to declare table: {}", e),
-                        });
-                    }
-                }
-            };
-
-        let write_params = if let Some(storage_opts) = initial_storage_options {
-            let mut params = request.write_options.lance_write_params.unwrap_or_default();
+        // Set up storage options if provided
+        if let Some(storage_opts) = initial_storage_options {
             let store_params = params
                 .store_params
                 .get_or_insert_with(ObjectStoreParams::default);
             store_params.storage_options_accessor = Some(Arc::new(
                 StorageOptionsAccessor::with_static_options(storage_opts),
             ));
-            Some(params)
-        } else {
-            request.write_options.lance_write_params
-        };
+        }
+
+        // Set up commit handler when managed_versioning is enabled
+        if managed_versioning == Some(true) {
+            let external_store =
+                LanceNamespaceExternalManifestStore::new(self.namespace.clone(), table_id.clone());
+            let commit_handler: Arc<dyn CommitHandler> = Arc::new(ExternalManifestCommitHandler {
+                external_manifest_store: Arc::new(external_store),
+            });
+            params.commit_handler = Some(commit_handler);
+        }
+
+        let write_params = Some(params);
 
         let native_table = NativeTable::create_from_namespace(
             self.namespace.clone(),

rust/lancedb/src/dataloader/permutation/reader.rs

@@ -339,6 +339,12 @@ impl PermutationReader {
                 }
                 Ok(false)
             }
+            Select::Expr(columns) => {
+                // For Expr projections, we check if any alias is _rowid.
+                // We can't validate the expression itself (it may differ from _rowid)
+                // but we allow it through; the column will be included.
+                Ok(columns.iter().any(|(alias, _)| alias == ROW_ID))
+            }
         }
     }
 

rust/lancedb/src/query.rs

@@ -47,6 +47,25 @@ pub enum Select {
     ///
     /// See [`Query::select`] for more details and examples
     Dynamic(Vec<(String, String)>),
+    /// Advanced selection using type-safe DataFusion expressions
+    ///
+    /// Similar to [`Select::Dynamic`] but uses [`datafusion_expr::Expr`] instead of
+    /// raw SQL strings. Use [`crate::expr`] helpers to build expressions:
+    ///
+    /// ```
+    /// use lancedb::expr::{col, lit};
+    /// use lancedb::query::Select;
+    ///
+    /// // SELECT id, id * 2 AS id2 FROM ...
+    /// let selection = Select::expr_projection(&[
+    ///     ("id", col("id")),
+    ///     ("id2", col("id") * lit(2)),
+    /// ]);
+    /// ```
+    ///
+    /// Note: For remote/server-side queries the expressions are serialized to SQL strings
+    /// automatically (same as [`Select::Dynamic`]).
+    Expr(Vec<(String, datafusion_expr::Expr)>),
 }
 
 impl Select {
@@ -69,6 +88,29 @@ impl Select {
                 .collect(),
         )
     }
+    /// Create a typed-expression projection.
+    ///
+    /// This is a convenience method for creating a [`Select::Expr`] variant from
+    /// a slice of `(name, expr)` pairs where each `expr` is a [`datafusion_expr::Expr`].
+    ///
+    /// # Example
+    /// ```
+    /// use lancedb::expr::{col, lit};
+    /// use lancedb::query::Select;
+    ///
+    /// let selection = Select::expr_projection(&[
+    ///     ("id", col("id")),
+    ///     ("id2", col("id") * lit(2)),
+    /// ]);
+    /// ```
+    pub fn expr_projection(columns: &[(impl AsRef<str>, datafusion_expr::Expr)]) -> Self {
+        Self::Expr(
+            columns
+                .iter()
+                .map(|(name, expr)| (name.as_ref().to_string(), expr.clone()))
+                .collect(),
+        )
+    }
 }
 
 /// A trait for converting a type to a query vector
@@ -1591,6 +1633,58 @@ mod tests {
         });
     }
 
+    #[tokio::test]
+    async fn test_select_with_expr_projection() {
+        // Mirrors test_select_with_transform but uses Select::Expr instead of Select::Dynamic
+        let tmp_dir = tempdir().unwrap();
+        let dataset_path = tmp_dir.path().join("test_expr.lance");
+        let uri = dataset_path.to_str().unwrap();
+
+        let batches = make_non_empty_batches();
+        let conn = connect(uri).execute().await.unwrap();
+        let table = conn
+            .create_table("my_table", batches)
+            .execute()
+            .await
+            .unwrap();
+
+        use crate::expr::{col, lit};
+        let query = table.query().limit(10).select(Select::expr_projection(&[
+            ("id2", col("id") * lit(2i32)),
+            ("id", col("id")),
+        ]));
+
+        let schema = query.output_schema().await.unwrap();
+        assert_eq!(
+            schema,
+            Arc::new(ArrowSchema::new(vec![
+                ArrowField::new("id2", DataType::Int32, true),
+                ArrowField::new("id", DataType::Int32, true),
+            ]))
+        );
+
+        let result = query.execute().await;
+        let mut batches = result
+            .expect("should have result")
+            .try_collect::<Vec<_>>()
+            .await
+            .unwrap();
+        assert_eq!(batches.len(), 1);
+        let batch = batches.pop().unwrap();
+
+        // id and id2
+        assert_eq!(batch.num_columns(), 2);
+
+        let id: &Int32Array = batch.column_by_name("id").unwrap().as_primitive();
+        let id2: &Int32Array = batch.column_by_name("id2").unwrap().as_primitive();
+
+        id.iter().zip(id2.iter()).for_each(|(id, id2)| {
+            let id = id.unwrap();
+            let id2 = id2.unwrap();
+            assert_eq!(id * 2, id2);
+        });
+    }
+
     #[tokio::test]
     async fn test_execute_no_vector() {
         // TODO: Switch back to memory://foo after https://github.com/lancedb/lancedb/issues/1051

rust/lancedb/src/remote/client.rs

@@ -426,14 +426,11 @@ impl<S: HttpSend> RestfulLanceDbClient<S> {
                 })?,
             );
         }
-        if db_prefix.is_some() {
+        if let Some(prefix) = db_prefix {
             headers.insert(
                 HeaderName::from_static("x-lancedb-database-prefix"),
-                HeaderValue::from_str(db_prefix.unwrap()).map_err(|_| Error::InvalidInput {
-                    message: format!(
-                        "non-ascii database prefix '{}' provided",
-                        db_prefix.unwrap()
-                    ),
+                HeaderValue::from_str(prefix).map_err(|_| Error::InvalidInput {
+                    message: format!("non-ascii database prefix '{}' provided", prefix),
                 })?,
             );
         }

rust/lancedb/src/remote/db.rs

@@ -464,6 +464,7 @@ impl<S: HttpSend> Database for RemoteDatabase<S> {
                             lance_read_params: None,
                             location: None,
                             namespace_client: None,
+                            managed_versioning: None,
                         };
                         let req = (callback)(req);
                         self.open_table(req).await

rust/lancedb/src/remote/table.rs

@@ -477,6 +477,16 @@ impl<S: HttpSend> RemoteTable<S> {
                     }));
                 body["columns"] = alias_map.into();
             }
+            Select::Expr(pairs) => {
+                let alias_map: Result<serde_json::Map<String, serde_json::Value>> = pairs
+                    .iter()
+                    .map(|(name, expr)| {
+                        expr_to_sql_string(expr)
+                            .map(|sql| (name.clone(), serde_json::Value::String(sql)))
+                    })
+                    .collect();
+                body["columns"] = alias_map?.into();
+            }
         }
 
         if params.fast_search {
@@ -1645,10 +1655,33 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         Ok(())
     }
 
-    async fn prewarm_index(&self, _index_name: &str) -> Result<()> {
-        Err(Error::NotSupported {
-            message: "prewarm_index is not yet supported on LanceDB cloud.".into(),
-        })
+    async fn prewarm_index(&self, index_name: &str) -> Result<()> {
+        let request = self.client.post(&format!(
+            "/v1/table/{}/index/{}/prewarm/",
+            self.identifier, index_name
+        ));
+        let (request_id, response) = self.send(request, true).await?;
+        if response.status() == StatusCode::NOT_FOUND {
+            return Err(Error::IndexNotFound {
+                name: index_name.to_string(),
+            });
+        }
+        self.check_table_response(&request_id, response).await?;
+        Ok(())
+    }
+
+    async fn prewarm_data(&self, columns: Option<Vec<String>>) -> Result<()> {
+        let mut request = self.client.post(&format!(
+            "/v1/table/{}/page_cache/prewarm/",
+            self.identifier
+        ));
+        let body = serde_json::json!({
+            "columns": columns.unwrap_or_default(),
+        });
+        request = request.json(&body);
+        let (request_id, response) = self.send(request, true).await?;
+        self.check_table_response(&request_id, response).await?;
+        Ok(())
     }
 
     async fn table_definition(&self) -> Result<TableDefinition> {
@@ -3529,6 +3562,64 @@ mod tests {
         assert_eq!(result.version, if old_server { 0 } else { 43 });
     }
 
+    #[tokio::test]
+    async fn test_prewarm_index() {
+        let table = Table::new_with_handler("my_table", |request| {
+            assert_eq!(request.method(), "POST");
+            assert_eq!(
+                request.url().path(),
+                "/v1/table/my_table/index/my_index/prewarm/"
+            );
+            http::Response::builder().status(200).body("{}").unwrap()
+        });
+        table.prewarm_index("my_index").await.unwrap();
+    }
+
+    #[tokio::test]
+    async fn test_prewarm_index_not_found() {
+        let table = Table::new_with_handler("my_table", |request| {
+            assert_eq!(
+                request.url().path(),
+                "/v1/table/my_table/index/my_index/prewarm/"
+            );
+            http::Response::builder().status(404).body("{}").unwrap()
+        });
+        let e = table.prewarm_index("my_index").await.unwrap_err();
+        assert!(matches!(e, Error::IndexNotFound { .. }));
+    }
+
+    #[tokio::test]
+    async fn test_prewarm_data() {
+        let table = Table::new_with_handler("my_table", |request| {
+            assert_eq!(request.method(), "POST");
+            assert_eq!(
+                request.url().path(),
+                "/v1/table/my_table/page_cache/prewarm/"
+            );
+            http::Response::builder().status(200).body("{}").unwrap()
+        });
+        table.prewarm_data(None).await.unwrap();
+    }
+
+    #[tokio::test]
+    async fn test_prewarm_data_with_columns() {
+        let table = Table::new_with_handler("my_table", |request| {
+            assert_eq!(request.method(), "POST");
+            assert_eq!(
+                request.url().path(),
+                "/v1/table/my_table/page_cache/prewarm/"
+            );
+            let body = request.body().unwrap().as_bytes().unwrap();
+            let body: serde_json::Value = serde_json::from_slice(body).unwrap();
+            assert_eq!(body["columns"], serde_json::json!(["col_a", "col_b"]));
+            http::Response::builder().status(200).body("{}").unwrap()
+        });
+        table
+            .prewarm_data(Some(vec!["col_a".into(), "col_b".into()]))
+            .await
+            .unwrap();
+    }
+
     #[tokio::test]
     async fn test_drop_index() {
         let table = Table::new_with_handler("my_table", |request| {

rust/lancedb/src/table.rs

@@ -34,9 +34,13 @@ use lance_index::vector::sq::builder::SQBuildParams;
 use lance_io::object_store::{LanceNamespaceStorageOptionsProvider, StorageOptionsAccessor};
 pub use query::AnyQuery;
 
+use lance::io::commit::namespace_manifest::LanceNamespaceExternalManifestStore;
 use lance_namespace::LanceNamespace;
+use lance_namespace::models::DescribeTableRequest;
 use lance_table::format::Manifest;
+use lance_table::io::commit::CommitHandler;
 use lance_table::io::commit::ManifestNamingScheme;
+use lance_table::io::commit::external_manifest::ExternalManifestCommitHandler;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::format;
@@ -273,8 +277,13 @@ pub trait BaseTable: std::fmt::Display + std::fmt::Debug + Send + Sync {
     async fn list_indices(&self) -> Result<Vec<IndexConfig>>;
     /// Drop an index from the table.
     async fn drop_index(&self, name: &str) -> Result<()>;
-    /// Prewarm an index in the table
+    /// Prewarm an index in the table.
     async fn prewarm_index(&self, name: &str) -> Result<()>;
+    /// Prewarm data for the table.
+    ///
+    /// Currently only supported on remote tables.
+    /// If `columns` is `None`, all columns are prewarmed.
+    async fn prewarm_data(&self, columns: Option<Vec<String>>) -> Result<()>;
     /// Get statistics about the index.
     async fn index_stats(&self, index_name: &str) -> Result<Option<IndexStatistics>>;
     /// Merge insert new records into the table.
@@ -942,17 +951,7 @@ impl Table {
     ///  * Prune: Removes old versions of the dataset
     ///  * Index: Optimizes the indices, adding new data to existing indices
     ///
-    /// <section class="warning">Experimental API</section>
-    ///
-    /// 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
+    /// The frequency an application should 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
@@ -1119,22 +1118,45 @@ impl Table {
         self.inner.drop_index(name).await
     }
 
-    /// Prewarm an index in the table
+    /// Prewarm an index in the table.
     ///
-    /// This is a hint to fully load the index into memory.  It can be used to
-    /// avoid cold starts
+    /// This is a hint to the database that the index will be accessed in the
+    /// future and should be loaded into memory if possible.  This can reduce
+    /// cold-start latency for subsequent queries.
+    ///
+    /// This call initiates prewarming and returns once the request is accepted.
+    /// It is idempotent and safe to call from multiple clients concurrently.
     ///
     /// It is generally wasteful to call this if the index does not fit into the
-    /// available cache.
-    ///
-    /// Note: This function is not yet supported on all indices, in which case it
-    /// may do nothing.
+    /// available cache.  Not all index types support prewarming; unsupported
+    /// indices will silently ignore the request.
     ///
     /// Use [`Self::list_indices()`] to find the names of the indices.
     pub async fn prewarm_index(&self, name: &str) -> Result<()> {
         self.inner.prewarm_index(name).await
     }
 
+    /// Prewarm data for the table.
+    ///
+    /// This is a hint to the database that the given columns will be accessed in
+    /// the future and the database should prefetch the data if possible.  This
+    /// can reduce cold-start latency for subsequent queries.  Currently only
+    /// supported on remote tables.
+    ///
+    /// This call initiates prewarming and returns once the request is accepted.
+    /// It is idempotent and safe to call from multiple clients concurrently —
+    /// calling it on already-prewarmed columns is a no-op on the server.
+    ///
+    /// This operation has a large upfront cost but can speed up future queries
+    /// that need to fetch the given columns.  Large columns such as embeddings
+    /// or binary data may not be practical to prewarm.  This feature is intended
+    /// for workloads that issue many queries against the same columns.
+    ///
+    /// If `columns` is `None`, all columns are prewarmed.
+    pub async fn prewarm_data(&self, columns: Option<Vec<String>>) -> Result<()> {
+        self.inner.prewarm_data(columns).await
+    }
+
     /// Poll until the columns are fully indexed. Will return Error::Timeout if the columns
     /// are not fully indexed within the timeout.
     pub async fn wait_for_index(
@@ -1212,10 +1234,13 @@ pub struct NativeTable {
     // This comes from the connection options. We store here so we can pass down
     // to the dataset when we recreate it (for example, in checkout_latest).
     read_consistency_interval: Option<std::time::Duration>,
-    // Optional namespace client for server-side query execution.
-    // When set, queries will be executed on the namespace server instead of locally.
-    // pub (crate) namespace_client so query.rs can access the fields
+    // Optional namespace client for namespace operations (e.g., managed versioning).
+    // pub(crate) so query.rs can access the field for server-side query execution.
     pub(crate) namespace_client: Option<Arc<dyn LanceNamespace>>,
+    // Whether to enable server-side query execution via the namespace client.
+    // When true and namespace_client is set, queries will be executed on the
+    // namespace server instead of locally.
+    pub(crate) server_side_query_enabled: bool,
 }
 
 impl std::fmt::Debug for NativeTable {
@@ -1227,6 +1252,7 @@ impl std::fmt::Debug for NativeTable {
             .field("uri", &self.uri)
             .field("read_consistency_interval", &self.read_consistency_interval)
             .field("namespace_client", &self.namespace_client)
+            .field("server_side_query_enabled", &self.server_side_query_enabled)
             .finish()
     }
 }
@@ -1263,7 +1289,7 @@ impl NativeTable {
     /// * A [NativeTable] object.
     pub async fn open(uri: &str) -> Result<Self> {
         let name = Self::get_table_name(uri)?;
-        Self::open_with_params(uri, &name, vec![], None, None, None, None).await
+        Self::open_with_params(uri, &name, vec![], None, None, None, None, false, None).await
     }
 
     /// Opens an existing Table
@@ -1273,7 +1299,10 @@ impl NativeTable {
     /// * `base_path` - The base path where the table is located
     /// * `name` The Table name
     /// * `params` The [ReadParams] to use when opening the table
-    /// * `namespace_client` - Optional namespace client for server-side query execution
+    /// * `namespace_client` - Optional namespace client for namespace operations
+    /// * `server_side_query_enabled` - Whether to enable server-side query execution
+    /// * `managed_versioning` - Whether managed versioning is enabled. If None and namespace_client
+    ///   is provided, the value will be fetched via describe_table.
     ///
     /// # Returns
     ///
@@ -1287,6 +1316,8 @@ impl NativeTable {
         params: Option<ReadParams>,
         read_consistency_interval: Option<std::time::Duration>,
         namespace_client: Option<Arc<dyn LanceNamespace>>,
+        server_side_query_enabled: bool,
+        managed_versioning: Option<bool>,
     ) -> Result<Self> {
         let params = params.unwrap_or_default();
         // patch the params if we have a write store wrapper
@@ -1295,17 +1326,54 @@ impl NativeTable {
             None => params,
         };
 
-        let dataset = DatasetBuilder::from_uri(uri)
-            .with_read_params(params)
-            .load()
-            .await
-            .map_err(|e| match e {
-                lance::Error::DatasetNotFound { .. } => Error::TableNotFound {
-                    name: name.to_string(),
-                    source: Box::new(e),
-                },
-                e => e.into(),
-            })?;
+        // Build table_id from namespace + name
+        let mut table_id = namespace.clone();
+        table_id.push(name.to_string());
+
+        // Determine if managed_versioning is enabled
+        // Use the provided value if available, otherwise query the namespace
+        let managed_versioning = match managed_versioning {
+            Some(value) => value,
+            None if namespace_client.is_some() => {
+                let ns_client = namespace_client.as_ref().unwrap();
+                let describe_request = DescribeTableRequest {
+                    id: Some(table_id.clone()),
+                    ..Default::default()
+                };
+                let response = ns_client
+                    .describe_table(describe_request)
+                    .await
+                    .map_err(|e| Error::Runtime {
+                        message: format!(
+                            "Failed to describe table via namespace client: {}. \
+                             If you don't need managed versioning, don't pass namespace_client.",
+                            e
+                        ),
+                    })?;
+                response.managed_versioning == Some(true)
+            }
+            None => false,
+        };
+
+        let mut builder = DatasetBuilder::from_uri(uri).with_read_params(params);
+
+        // Set up commit handler when managed_versioning is enabled
+        if managed_versioning && let Some(ref ns_client) = namespace_client {
+            let external_store =
+                LanceNamespaceExternalManifestStore::new(ns_client.clone(), table_id.clone());
+            let commit_handler: Arc<dyn CommitHandler> = Arc::new(ExternalManifestCommitHandler {
+                external_manifest_store: Arc::new(external_store),
+            });
+            builder = builder.with_commit_handler(commit_handler);
+        }
+
+        let dataset = builder.load().await.map_err(|e| match e {
+            lance::Error::DatasetNotFound { .. } => Error::TableNotFound {
+                name: name.to_string(),
+                source: Box::new(e),
+            },
+            e => e.into(),
+        })?;
 
         let dataset = DatasetConsistencyWrapper::new_latest(dataset, read_consistency_interval);
         let id = Self::build_id(&namespace, name);
@@ -1318,6 +1386,7 @@ impl NativeTable {
             dataset,
             read_consistency_interval,
             namespace_client,
+            server_side_query_enabled,
         })
     }
 
@@ -1421,6 +1490,7 @@ impl NativeTable {
             dataset,
             read_consistency_interval,
             namespace_client: stored_namespace_client,
+            server_side_query_enabled,
         })
     }
 
@@ -1460,7 +1530,8 @@ impl NativeTable {
     /// * `namespace` - The namespace path. When non-empty, an explicit URI must be provided.
     /// * `batches` RecordBatch to be saved in the database.
     /// * `params` - Write parameters.
-    /// * `namespace_client` - Optional namespace client for server-side query execution
+    /// * `namespace_client` - Optional namespace client for namespace operations
+    /// * `server_side_query_enabled` - Whether to enable server-side query execution
     ///
     /// # Returns
     ///
@@ -1475,6 +1546,7 @@ impl NativeTable {
         params: Option<WriteParams>,
         read_consistency_interval: Option<std::time::Duration>,
         namespace_client: Option<Arc<dyn LanceNamespace>>,
+        server_side_query_enabled: bool,
     ) -> Result<Self> {
         // Default params uses format v1.
         let params = params.unwrap_or(WriteParams {
@@ -1507,6 +1579,7 @@ impl NativeTable {
             dataset: DatasetConsistencyWrapper::new_latest(dataset, read_consistency_interval),
             read_consistency_interval,
             namespace_client,
+            server_side_query_enabled,
         })
     }
 
@@ -1520,6 +1593,7 @@ impl NativeTable {
         params: Option<WriteParams>,
         read_consistency_interval: Option<std::time::Duration>,
         namespace_client: Option<Arc<dyn LanceNamespace>>,
+        server_side_query_enabled: bool,
     ) -> Result<Self> {
         let data: Box<dyn Scannable> = Box::new(RecordBatch::new_empty(schema));
         Self::create(
@@ -1531,6 +1605,7 @@ impl NativeTable {
             params,
             read_consistency_interval,
             namespace_client,
+            server_side_query_enabled,
         )
         .await
     }
@@ -1634,6 +1709,7 @@ impl NativeTable {
             dataset: DatasetConsistencyWrapper::new_latest(dataset, read_consistency_interval),
             read_consistency_interval,
             namespace_client: stored_namespace_client,
+            server_side_query_enabled,
         })
     }
 
@@ -2232,6 +2308,12 @@ impl BaseTable for NativeTable {
         Ok(dataset.prewarm_index(index_name).await?)
     }
 
+    async fn prewarm_data(&self, _columns: Option<Vec<String>>) -> Result<()> {
+        Err(Error::NotSupported {
+            message: "prewarm_data is currently only supported on remote tables.".into(),
+        })
+    }
+
     async fn update(&self, update: UpdateBuilder) -> Result<UpdateResult> {
         // Delegate to the submodule implementation
         update::execute_update(self, update).await
@@ -2625,7 +2707,7 @@ mod tests {
             vec![Ok(batch.clone())],
             batch.schema(),
         ));
-        let table = NativeTable::create(uri, "test", vec![], reader, None, None, None, None)
+        let table = NativeTable::create(uri, "test", vec![], reader, None, None, None, None, false)
             .await
             .unwrap();
 

rust/lancedb/src/table/datafusion/cast.rs

@@ -3,12 +3,13 @@
 
 use std::sync::Arc;
 
+use arrow_cast::can_cast_types;
 use arrow_schema::{DataType, Field, FieldRef, Fields, Schema};
 use datafusion::functions::core::{get_field, named_struct};
 use datafusion_common::ScalarValue;
 use datafusion_common::config::ConfigOptions;
 use datafusion_physical_expr::ScalarFunctionExpr;
-use datafusion_physical_expr::expressions::{Literal, cast};
+use datafusion_physical_expr::expressions::{CastExpr, Literal};
 use datafusion_physical_plan::expressions::Column;
 use datafusion_physical_plan::projection::ProjectionExec;
 use datafusion_physical_plan::{ExecutionPlan, PhysicalExpr};
@@ -25,12 +26,9 @@ pub fn cast_to_table_schema(
         return Ok(input);
     }
 
-    let exprs = build_field_exprs(
-        input_schema.fields(),
-        table_schema.fields(),
-        &|idx| Arc::new(Column::new(input_schema.field(idx).name(), idx)) as Arc<dyn PhysicalExpr>,
-        &input_schema,
-    )?;
+    let exprs = build_field_exprs(input_schema.fields(), table_schema.fields(), &|idx| {
+        Arc::new(Column::new(input_schema.field(idx).name(), idx)) as Arc<dyn PhysicalExpr>
+    })?;
 
     let exprs: Vec<(Arc<dyn PhysicalExpr>, String)> = exprs
         .into_iter()
@@ -51,7 +49,6 @@ fn build_field_exprs(
     input_fields: &Fields,
     table_fields: &Fields,
     get_input_expr: &dyn Fn(usize) -> Arc<dyn PhysicalExpr>,
-    input_schema: &Schema,
 ) -> Result<Vec<(Arc<dyn PhysicalExpr>, FieldRef)>> {
     let config = Arc::new(ConfigOptions::default());
     let mut result = Vec::new();
@@ -72,24 +69,19 @@ fn build_field_exprs(
             (DataType::Struct(in_children), DataType::Struct(tbl_children))
                 if in_children != tbl_children =>
             {
-                let sub_exprs = build_field_exprs(
-                    in_children,
-                    tbl_children,
-                    &|child_idx| {
-                        let child_name = in_children[child_idx].name();
-                        Arc::new(ScalarFunctionExpr::new(
-                            &format!("get_field({child_name})"),
-                            get_field(),
-                            vec![
-                                input_expr.clone(),
-                                Arc::new(Literal::new(ScalarValue::from(child_name.as_str()))),
-                            ],
-                            Arc::new(in_children[child_idx].as_ref().clone()),
-                            config.clone(),
-                        )) as Arc<dyn PhysicalExpr>
-                    },
-                    input_schema,
-                )?;
+                let sub_exprs = build_field_exprs(in_children, tbl_children, &|child_idx| {
+                    let child_name = in_children[child_idx].name();
+                    Arc::new(ScalarFunctionExpr::new(
+                        &format!("get_field({child_name})"),
+                        get_field(),
+                        vec![
+                            input_expr.clone(),
+                            Arc::new(Literal::new(ScalarValue::from(child_name.as_str()))),
+                        ],
+                        Arc::new(in_children[child_idx].as_ref().clone()),
+                        config.clone(),
+                    )) as Arc<dyn PhysicalExpr>
+                })?;
 
                 let output_struct_fields: Fields = sub_exprs
                     .iter()
@@ -125,17 +117,21 @@ fn build_field_exprs(
             // Types match: pass through.
             (inp, tbl) if inp == tbl => input_expr,
             // Types differ: cast.
-            _ => cast(input_expr, input_schema, table_field.data_type().clone()).map_err(|e| {
-                Error::InvalidInput {
+            // safe: false (the default) means overflow/truncation errors surface at execution time.
+            (_, _) if can_cast_types(input_field.data_type(), table_field.data_type()) => Arc::new(
+                CastExpr::new(input_expr, table_field.data_type().clone(), None),
+            )
+                as Arc<dyn PhysicalExpr>,
+            (inp, tbl) => {
+                return Err(Error::InvalidInput {
                     message: format!(
-                        "cannot cast field '{}' from {} to {}: {}",
+                        "cannot cast field '{}' from {} to {}",
                         table_field.name(),
-                        input_field.data_type(),
-                        table_field.data_type(),
-                        e
+                        inp,
+                        tbl,
                     ),
-                }
-            })?,
+                });
+            }
         };
 
         let output_field = Arc::new(Field::new(
@@ -153,10 +149,12 @@ fn build_field_exprs(
 mod tests {
     use std::sync::Arc;
 
+    use arrow::buffer::OffsetBuffer;
     use arrow_array::{
-        Float32Array, Float64Array, Int32Array, Int64Array, RecordBatch, StringArray, StructArray,
+        Array, Float32Array, Float64Array, Int32Array, Int64Array, ListArray, RecordBatch,
+        StringArray, StructArray, UInt32Array, UInt64Array,
     };
-    use arrow_schema::{DataType, Field, Schema};
+    use arrow_schema::{DataType, Field, Fields, Schema};
     use datafusion::prelude::SessionContext;
     use datafusion_catalog::MemTable;
     use futures::TryStreamExt;
@@ -495,4 +493,129 @@ mod tests {
         assert_eq!(b.value(0), "hello");
         assert_eq!(b.value(1), "world");
     }
+
+    #[tokio::test]
+    async fn test_narrowing_numeric_cast_success() {
+        let input_batch = RecordBatch::try_new(
+            Arc::new(Schema::new(vec![Field::new("a", DataType::UInt64, false)])),
+            vec![Arc::new(UInt64Array::from(vec![1u64, 2, 3]))],
+        )
+        .unwrap();
+
+        let table_schema = Schema::new(vec![Field::new("a", DataType::UInt32, false)]);
+
+        let plan = plan_from_batch(input_batch).await;
+        let casted = cast_to_table_schema(plan, &table_schema).unwrap();
+        let result = collect(casted).await;
+
+        assert_eq!(result.schema().field(0).data_type(), &DataType::UInt32);
+        let a: &UInt32Array = result.column(0).as_any().downcast_ref().unwrap();
+        assert_eq!(a.values(), &[1u32, 2, 3]);
+    }
+
+    #[tokio::test]
+    async fn test_narrowing_numeric_cast_overflow_errors() {
+        let overflow_val = u32::MAX as u64 + 1;
+        let input_batch = RecordBatch::try_new(
+            Arc::new(Schema::new(vec![Field::new("a", DataType::UInt64, false)])),
+            vec![Arc::new(UInt64Array::from(vec![overflow_val]))],
+        )
+        .unwrap();
+
+        let table_schema = Schema::new(vec![Field::new("a", DataType::UInt32, false)]);
+
+        let plan = plan_from_batch(input_batch).await;
+        // Planning succeeds — the overflow is only detected at execution time.
+        let casted = cast_to_table_schema(plan, &table_schema).unwrap();
+
+        let ctx = SessionContext::new();
+        let stream = casted.execute(0, ctx.task_ctx()).unwrap();
+        let result: Result<Vec<RecordBatch>, _> = stream.try_collect().await;
+        assert!(result.is_err(), "expected overflow error at execution time");
+    }
+
+    #[tokio::test]
+    async fn test_list_struct_field_reorder() {
+        // list<struct<a: Int32, b: Int32>> → list<struct<b: Int64, a: Int64>>
+        // Tests both reordering (a,b → b,a) and element-type widening (Int32 → Int64).
+        let inner_fields: Fields = vec![
+            Field::new("a", DataType::Int32, true),
+            Field::new("b", DataType::Int32, true),
+        ]
+        .into();
+        let struct_array = StructArray::from(vec![
+            (
+                Arc::new(inner_fields[0].as_ref().clone()),
+                Arc::new(Int32Array::from(vec![1, 3])) as _,
+            ),
+            (
+                Arc::new(inner_fields[1].as_ref().clone()),
+                Arc::new(Int32Array::from(vec![2, 4])) as _,
+            ),
+        ]);
+        // Offsets: one list element containing two struct rows (0..2).
+        let offsets = OffsetBuffer::from_lengths(vec![2]);
+        let list_array = ListArray::try_new(
+            Arc::new(Field::new("item", DataType::Struct(inner_fields), true)),
+            offsets,
+            Arc::new(struct_array),
+            None,
+        )
+        .unwrap();
+        let input_batch = RecordBatch::try_new(
+            Arc::new(Schema::new(vec![Field::new(
+                "s_list",
+                list_array.data_type().clone(),
+                false,
+            )])),
+            vec![Arc::new(list_array)],
+        )
+        .unwrap();
+
+        let table_inner: Fields = vec![
+            Field::new("b", DataType::Int64, true),
+            Field::new("a", DataType::Int64, true),
+        ]
+        .into();
+        let table_schema = Schema::new(vec![Field::new(
+            "s_list",
+            DataType::List(Arc::new(Field::new(
+                "item",
+                DataType::Struct(table_inner),
+                true,
+            ))),
+            false,
+        )]);
+
+        let plan = plan_from_batch(input_batch).await;
+        let casted = cast_to_table_schema(plan, &table_schema).unwrap();
+        let result = collect(casted).await;
+
+        let list_col = result
+            .column(0)
+            .as_any()
+            .downcast_ref::<ListArray>()
+            .unwrap();
+        let struct_col = list_col
+            .values()
+            .as_any()
+            .downcast_ref::<StructArray>()
+            .unwrap();
+        assert_eq!(struct_col.num_columns(), 2);
+
+        let b: &Int64Array = struct_col
+            .column_by_name("b")
+            .unwrap()
+            .as_any()
+            .downcast_ref()
+            .unwrap();
+        assert_eq!(b.values(), &[2, 4]);
+        let a: &Int64Array = struct_col
+            .column_by_name("a")
+            .unwrap()
+            .as_any()
+            .downcast_ref()
+            .unwrap();
+        assert_eq!(a.values(), &[1, 3]);
+    }
 }

rust/lancedb/src/table/delete.rs

@@ -1,3 +1,4 @@
+use futures::FutureExt;
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: Copyright The LanceDB Authors
 use serde::{Deserialize, Serialize};
@@ -23,7 +24,7 @@ pub struct DeleteResult {
 pub(crate) async fn execute_delete(table: &NativeTable, predicate: &str) -> Result<DeleteResult> {
     table.dataset.ensure_mutable()?;
     let mut dataset = (*table.dataset.get().await?).clone();
-    let delete_result = dataset.delete(predicate).await?;
+    let delete_result = dataset.delete(predicate).boxed().await?;
     let num_deleted_rows = delete_result.num_deleted_rows;
     let version = dataset.version().version;
     table.dataset.update(dataset);

rust/lancedb/src/table/optimize.rs

@@ -64,6 +64,9 @@ pub enum OptimizeAction {
         older_than: Option<Duration>,
         /// Because they may be part of an in-progress transaction, files newer than 7 days old are not deleted by default.
         /// If you are sure that there are no in-progress transactions, then you can set this to True to delete all files older than `older_than`.
+        ///
+        /// **WARNING**: This should only be set to true if you can guarantee that no other process is
+        /// currently working on this dataset.  Otherwise the dataset could be put into a corrupted state.
         delete_unverified: Option<bool>,
         /// If true, an error will be returned if there are any old versions that are still tagged.
         error_if_tagged_old_versions: Option<bool>,
@@ -117,6 +120,10 @@ pub(crate) async fn optimize_indices(table: &NativeTable, options: &OptimizeOpti
 ///   If you are sure that there are no in-progress transactions, then you
 ///   can set this to True to delete all files older than `older_than`.
 ///
+///   **WARNING**: This should only be set to true if you can guarantee that
+///   no other process is currently working on this dataset.  Otherwise the
+///   dataset could be put into a corrupted state.
+///
 /// This calls into [lance::dataset::Dataset::cleanup_old_versions] and
 /// returns the result.
 pub(crate) async fn cleanup_old_versions(

rust/lancedb/src/table/query.rs

@@ -40,8 +40,10 @@ pub async fn execute_query(
     query: &AnyQuery,
     options: QueryExecutionOptions,
 ) -> Result<DatasetRecordBatchStream> {
-    // If namespace client is configured, use server-side query execution
-    if let Some(ref namespace_client) = table.namespace_client {
+    // If server-side query is enabled and namespace client is configured, use server-side query execution
+    if table.server_side_query_enabled
+        && let Some(ref namespace_client) = table.namespace_client
+    {
         return execute_namespace_query(table, namespace_client.clone(), query, options).await;
     }
     execute_generic_query(table, query, options).await
@@ -184,6 +186,13 @@ pub async fn create_plan(
         Select::Dynamic(ref select_with_transform) => {
             scanner.project_with_transform(select_with_transform.as_slice())?;
         }
+        Select::Expr(ref expr_pairs) => {
+            let sql_pairs: crate::Result<Vec<(String, String)>> = expr_pairs
+                .iter()
+                .map(|(name, expr)| expr_to_sql_string(expr).map(|sql| (name.clone(), sql)))
+                .collect();
+            scanner.project_with_transform(sql_pairs?.as_slice())?;
+        }
         Select::All => {}
     }
 
@@ -338,6 +347,17 @@ fn convert_to_namespace_query(query: &AnyQuery) -> Result<NsQueryTableRequest> {
                                 .to_string(),
                     });
                 }
+                Select::Expr(pairs) => {
+                    let sql_pairs: crate::Result<Vec<(String, String)>> = pairs
+                        .iter()
+                        .map(|(name, expr)| expr_to_sql_string(expr).map(|sql| (name.clone(), sql)))
+                        .collect();
+                    let sql_pairs = sql_pairs?;
+                    Some(Box::new(QueryTableRequestColumns {
+                        column_names: None,
+                        column_aliases: Some(sql_pairs.into_iter().collect()),
+                    }))
+                }
             };
 
             // Check for unsupported features
@@ -409,6 +429,17 @@ fn convert_to_namespace_query(query: &AnyQuery) -> Result<NsQueryTableRequest> {
                             .to_string(),
                     });
                 }
+                Select::Expr(pairs) => {
+                    let sql_pairs: crate::Result<Vec<(String, String)>> = pairs
+                        .iter()
+                        .map(|(name, expr)| expr_to_sql_string(expr).map(|sql| (name.clone(), sql)))
+                        .collect();
+                    let sql_pairs = sql_pairs?;
+                    Some(Box::new(QueryTableRequestColumns {
+                        column_names: None,
+                        column_aliases: Some(sql_pairs.into_iter().collect()),
+                    }))
+                }
             };
 
             // Handle full text search if present