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Author SHA1 Message Date
ayush chaurasia
887ac0d79d Merge branch 'main' of https://github.com/lancedb/lancedb into hybrid_query 2024-03-01 11:14:06 +05:30
QianZhu
c1af53b787 Add create scalar index to sdk (#1033) 2024-02-29 13:32:01 -08:00
Weston Pace
2a02d1394b feat: port create_table to the async python API and the remote rust API (#1031)
I've also started `ASYNC_MIGRATION.MD` to keep track of the breaking
changes from sync to async python.
2024-02-29 13:29:29 -08:00
Lance Release
085066d2a8 [python] Bump version: 0.6.0 → 0.6.1 2024-02-29 19:48:16 +00:00
Rob Meng
adf1a38f4d fix: fix columns type for pydantic 2.x (#1045) 2024-02-29 14:47:56 -05:00
Weston Pace
294c33a42e feat: Initial remote table implementation for rust (#1024)
This will eventually replace the remote table implementations in python
and node.
2024-02-29 10:55:49 -08:00
Lance Release
245786fed7 [python] Bump version: 0.5.7 → 0.6.0 2024-02-29 16:03:01 +00:00
BubbleCal
edd9a043f8 chore: enable test for dropping table (#1038)
Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-02-29 15:00:24 +08:00
natcharacter
38c09fc294 A simple base usage that install the dependencies necessary to use FT… (#1036)
A simple base usage that install the dependencies necessary to use FTS
and Hybrid search

---------

Co-authored-by: Nat Roth <natroth@Nats-MacBook-Pro.local>
Co-authored-by: Chang She <759245+changhiskhan@users.noreply.github.com>
2024-02-28 09:38:05 -08:00
Rob Meng
ebaa2dede5 chore: upgrade to lance 0.10.1 (#1034)
upgrade to lance 0.10.1 and update doc string to reflect dynamic
projection options
2024-02-28 11:06:46 -05:00
BubbleCal
ba7618a026 chore(rust): report the TableNotFound error while dropping non-exist table (#1022)
this will work after upgrading lance with
https://github.com/lancedb/lance/pull/1995 merged
see #884 for details

Signed-off-by: BubbleCal <bubble-cal@outlook.com>
2024-02-28 04:46:39 -08:00
Weston Pace
a6bcbd007b feat: add a basic async python client starting point (#1014)
This changes `lancedb` from a "pure python" setuptools project to a
maturin project and adds a rust lancedb dependency.

The async python client is extremely minimal (only `connect` and
`Connection.table_names` are supported). The purpose of this PR is to
get the infrastructure in place for building out the rest of the async
client.

Although this is not technically a breaking change (no APIs are
changing) it is still a considerable change in the way the wheels are
built because they now include the native shared library.
2024-02-27 04:52:02 -08:00
Will Jones
5af74b5aca feat: {add|alter|drop}_columns APIs (#1015)
Initial work for #959. This exposes the basic functionality for each in
all of the APIs. Will add user guide documentation in a later PR.
2024-02-26 11:04:53 -08:00
Weston Pace
8a52619bc0 refactor: change arrow from a direct dependency to a peer dependency (#984)
BREAKING CHANGE: users will now need to npm install `apache-arrow` and
`@apache-arrow/ts` themselves.
2024-02-23 14:08:39 -08:00
ayush chaurasia
3ad4992282 update 2024-02-23 14:11:58 +05:30
ayush chaurasia
51cc422799 update 2024-02-23 14:03:21 +05:30
ayush chaurasia
a696dbc8f4 update 2024-02-23 13:54:44 +05:30
Lance Release
314d4c93e5 Updating package-lock.json 2024-02-23 05:11:22 +00:00
Lance Release
c5471ee694 Updating package-lock.json 2024-02-23 03:57:39 +00:00
Lance Release
4605359d3b Bump version: 0.4.10 → 0.4.11 2024-02-23 03:57:28 +00:00
Weston Pace
f1596122e6 refactor: rename the rust crate from vectordb to lancedb (#1012)
This also renames the new experimental node package to lancedb. The
classic node package remains named vectordb.

The goal here is to avoid introducing piecemeal breaking changes to the
vectordb crate. Instead, once the new API is stabilized, we will
officially release the lancedb crate and deprecate the vectordb crate.
The same pattern will eventually happen with the npm package vectordb.
2024-02-22 19:56:39 -08:00
Will Jones
3aa0c40168 feat(node): add read_consistency_interval to Node and Rust (#1002)
This PR adds the same consistency semantics as was added in #828. It
*does not* add the same lazy-loading of tables, since that breaks some
existing tests.

This closes #998.

---------

Co-authored-by: Weston Pace <weston.pace@gmail.com>
2024-02-22 15:04:30 -08:00
ayush chaurasia
9ca0260d54 update 2024-02-23 03:03:39 +05:30
ayush chaurasia
6486ec870b update 2024-02-23 03:02:05 +05:30
Lance Release
677b7c1fcc [python] Bump version: 0.5.6 → 0.5.7 2024-02-22 20:07:12 +00:00
Lei Xu
8303a7197b chore: bump pylance to 0.9.18 (#1011) 2024-02-22 11:47:36 -08:00
ayush chaurasia
64db2393f7 update 2024-02-22 16:28:17 +05:30
Raghav Dixit
5fa9bfc4a8 python(feat): Imagebind embedding fn support (#1003)
Added imagebind fn support , steps to install mentioned in docstring. 
pytest slow checks done locally

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-02-22 11:47:08 +05:30
Ayush Chaurasia
bf2e9d0088 Docs: add meta tags (#1006) 2024-02-21 23:22:47 +05:30
ayush chaurasia
bd4e8341fe update 2024-02-21 21:43:23 +05:30
Weston Pace
f04590ddad refactor: rust vectordb API stabilization of the Connection trait (#993)
This is the start of a more comprehensive refactor and stabilization of
the Rust API. The `Connection` trait is cleaned up to not require
`lance` and to match the `Connection` trait in other APIs. In addition,
the concrete implementation `Database` is hidden.

BREAKING CHANGE: The struct `crate::connection::Database` is now gone.
Several examples opened a connection using `Database::connect` or
`Database::connect_with_params`. Users should now use
`vectordb::connect`.

BREAKING CHANGE: The `connect`, `create_table`, and `open_table` methods
now all return a builder object. This means that a call like
`conn.open_table(..., opt1, opt2)` will now become
`conn.open_table(...).opt1(opt1).opt2(opt2).execute()` In addition, the
structure of options has changed slightly. However, no options
capability has been removed.

---------

Co-authored-by: Will Jones <willjones127@gmail.com>
2024-02-20 18:35:52 -08:00
Lance Release
62c5117def [python] Bump version: 0.5.5 → 0.5.6 2024-02-20 20:45:02 +00:00
Bert
22c196b3e3 lance 0.9.18 (#1000) 2024-02-19 15:20:34 -05:00
Johannes Kolbe
1f4ac71fa3 apply fixes for notebook (#989) 2024-02-19 15:36:52 +05:30
Ayush Chaurasia
b5aad2d856 docs: Add meta tag for image preview (#988)
I think this should work. Need to deploy it to be sure as it can be
tested locally. Can be tested here.

2 things about this solution:
* All pages have a same meta tag, i.e, lancedb banner
* If needed, we can automatically use the first image of each page and
generate meta tags using the ultralytics mkdocs plugin that we did for
this purpose - https://github.com/ultralytics/mkdocs
2024-02-19 14:07:31 +05:30
Chang She
ca6f55b160 doc: update navigation links for embedding functions (#986) 2024-02-17 12:12:11 -08:00
Chang She
6f8cf1e068 doc: improve embedding functions documentation (#983)
Got some user feedback that the `implicit` / `explicit` distinction is
confusing.
Instead I was thinking we would just deprecate the `with_embeddings` API
and then organize working with embeddings into 3 buckets:

1. manually generate embeddings
2. use a provided embedding function
3. define your own custom embedding function
2024-02-17 10:39:28 -08:00
Chang She
e0277383a5 feat(python): add optional threadpool for batch requests (#981)
Currently if a batch request is given to the remote API, each query is
sent sequentially. We should allow the user to specify a threadpool.
2024-02-16 20:22:22 -08:00
Will Jones
d6b408e26f fix: use static C runtime on Windows (#979)
We depend on C static runtime, but not all Windows machines have that.
So might be worth statically linking it.

https://github.com/reorproject/reor/issues/36#issuecomment-1948876463
2024-02-16 15:54:12 -08:00
Will Jones
2447372c1f docs: show DuckDB with dataset, not table (#974)
Using datasets is preferred way to allow filter and projection pushdown,
as well as aggregated larger-than-memory tables.
2024-02-16 09:18:18 -08:00
Ayush Chaurasia
f0298d8372 docs: Minimal reranking evaluation benchmarks (#977) 2024-02-15 22:16:53 +05:30
Lance Release
54693e6bec Updating package-lock.json 2024-02-14 23:20:59 +00:00
Will Jones
73b2977bff chore: upgrade lance to 0.9.16 (#975) 2024-02-14 14:20:03 -08:00
Will Jones
aec85f7875 ci: fix Node ARM release build (#971)
When we turned on fat LTO builds, we made the release build job **much**
more compute and memory intensive. The ARM runners have particularly low
memory per core, which makes them susceptible to OOM errors. To avoid
issues, I have enabled memory swap on ARM and bumped the side of the
runner.
2024-02-14 13:02:09 -08:00
Will Jones
51f92ecb3d ci: reduce number of build jobs on aarch64 to avoid OOM (#970) 2024-02-13 17:33:09 -08:00
Lance Release
5b60412d66 [python] Bump version: 0.5.4 → 0.5.5 2024-02-13 23:30:35 +00:00
Lance Release
53d63966a9 Updating package-lock.json 2024-02-13 23:23:02 +00:00
Lance Release
5ba87575e7 Bump version: 0.4.9 → 0.4.10 2024-02-13 23:22:53 +00:00
Weston Pace
cc5f2136a6 feat: make it easier to create empty tables (#942)
This PR also reworks the table creation utilities significantly so that
they are more consistent, built on top of each other, and thoroughly
documented.
2024-02-13 10:51:18 -08:00
Prashanth Rao
78e5fb5451 [docs]: Fix typos and clarity in hybrid search docs (#966)
- Fixed typos and added some clarity to the hybrid search docs
- Changed "Airbnb" case to be as per the [official company
name](https://en.wikipedia.org/wiki/Airbnb) (the "bnb" shouldn't be
capitalized", and the text in the document aligns with this
- Fixed headers in nav bar
2024-02-13 23:25:59 +05:30
Will Jones
8104c5c18e fix: wrap in BigInt to avoid upstream bug (#962)
Closes #960
2024-02-13 08:13:56 -08:00
Ayush Chaurasia
4fbabdeec3 docs: Add setup cell for colab example (#965) 2024-02-13 20:42:01 +05:30
Ayush Chaurasia
eb31d95fef feat(python): hybrid search updates, examples, & latency benchmarks (#964)
- Rename safe_import -> attempt_import_or_raise (closes
https://github.com/lancedb/lancedb/pull/923)
- Update docs
- Add Notebook example (@changhiskhan you can use it for the talk. Comes
with "open in colab" button)
- Latency benchmark & results comparison, sanity check on real-world
data
- Updates the default openai model to gpt-4
2024-02-13 17:58:39 +05:30
Will Jones
3169c36525 chore: fix clippy lints (#963) 2024-02-12 19:59:00 -08:00
QianZhu
1b990983b3 Qian/make vector col optional (#950)
remote SDK tests were completed through lancedb_integtest
2024-02-12 16:35:44 -08:00
Will Jones
0c21f91c16 fix(node): statically link lzma (#961)
Fixes #956

Same changes as https://github.com/lancedb/lance/pull/1934
2024-02-12 10:07:09 -08:00
Lance Release
7e50c239eb Updating package-lock.json 2024-02-10 18:07:16 +00:00
Weston Pace
24e8043150 chore: use a bigger runner for NPM publish jobs on aarch64 to avoid OOM (#955) 2024-02-10 09:57:33 -08:00
Lance Release
990440385d Updating package-lock.json 2024-02-09 23:37:31 +00:00
Lance Release
a693a9d897 Bump version: 0.4.8 → 0.4.9 2024-02-09 23:37:21 +00:00
Lance Release
82936c77ef [python] Bump version: 0.5.3 → 0.5.4 2024-02-09 22:56:45 +00:00
Weston Pace
dddcddcaf9 chore: bump lance version to 0.9.15 (#949) 2024-02-09 14:55:44 -08:00
Weston Pace
a9727eb318 feat: add support for filter during merge insert when matched (#948)
Closes #940
2024-02-09 10:26:14 -08:00
QianZhu
48d55bf952 added error msg to SaaS APIs (#852)
1. improved error msg for SaaS create_table and create_index

---------

Co-authored-by: Chang She <759245+changhiskhan@users.noreply.github.com>
2024-02-09 10:07:47 -08:00
Weston Pace
d2e71c8b08 feat: add a filterable count_rows to all the lancedb APIs (#913)
A `count_rows` method that takes a filter was recently added to
`LanceTable`. This PR adds it everywhere else except `RemoteTable` (that
will come soon).
2024-02-08 09:40:29 -08:00
Nitish Sharma
f53aace89c Minor updates to FAQ (#935)
Based on discussion over discord, adding minor updates to the FAQ
section about benchmarks, practical data size and concurrency in LanceDB
2024-02-07 20:49:25 -08:00
Ayush Chaurasia
d982ee934a feat(python): Reranker DX improvements (#904)
- Most users might not know how to use `QueryBuilder` object. Instead we
should just pass the string query.
- Add new rerankers: Colbert, openai
2024-02-06 13:59:31 +05:30
Will Jones
57605a2d86 feat(python): add read_consistency_interval argument (#828)
This PR refactors how we handle read consistency: does the `LanceTable`
class always pick up modifications to the table made by other instance
or processes. Users have three options they can set at the connection
level:

1. (Default) `read_consistency_interval=None` means it will not check at
all. Users can call `table.checkout_latest()` to manually check for
updates.
2. `read_consistency_interval=timedelta(0)` means **always** check for
updates, giving strong read consistency.
3. `read_consistency_interval=timedelta(seconds=20)` means check for
updates every 20 seconds. This is eventual consistency, a compromise
between the two options above.

## Table reference state

There is now an explicit difference between a `LanceTable` that tracks
the current version and one that is fixed at a historical version. We
now enforce that users cannot write if they have checked out an old
version. They are instructed to call `checkout_latest()` before calling
the write methods.

Since `conn.open_table()` doesn't have a parameter for version, users
will only get fixed references if they call `table.checkout()`.

The difference between these two can be seen in the repr: Table that are
fixed at a particular version will have a `version` displayed in the
repr. Otherwise, the version will not be shown.

```python
>>> table
LanceTable(connection=..., name="my_table")
>>> table.checkout(1)
>>> table
LanceTable(connection=..., name="my_table", version=1)
```

I decided to not create different classes for these states, because I
think we already have enough complexity with the Cloud vs OSS table
references.

Based on #812
2024-02-05 08:12:19 -08:00
Ayush Chaurasia
738511c5f2 feat(python): add support new openai embedding functions (#912)
@PrashantDixit0

---------

Co-authored-by: Chang She <759245+changhiskhan@users.noreply.github.com>
2024-02-04 18:19:42 -08:00
Lei Xu
0b0f42537e chore: add global cargo config to enable minimal cpu target (#925)
* Closes #895 
* Fix cargo clippy
2024-02-04 14:21:27 -08:00
QianZhu
e412194008 fix hybrid search example (#922) 2024-02-03 09:26:32 +05:30
Lance Release
a9088224c5 [python] Bump version: 0.5.2 → 0.5.3 2024-02-03 03:04:04 +00:00
Ayush Chaurasia
688c57a0d8 fix: revert safe_import_pandas usage (#921) 2024-02-02 18:57:13 -08:00
Lance Release
12a98deded Updating package-lock.json 2024-02-02 22:37:23 +00:00
Lance Release
e4bb042918 Updating package-lock.json 2024-02-02 21:57:07 +00:00
Lance Release
04e1662681 Bump version: 0.4.7 → 0.4.8 2024-02-02 21:56:57 +00:00
Lance Release
ce2242e06d [python] Bump version: 0.5.1 → 0.5.2 2024-02-02 21:33:02 +00:00
Weston Pace
778339388a chore: bump pylance version to latest in pyproject.toml (#918) 2024-02-02 13:32:12 -08:00
Weston Pace
7f8637a0b4 feat: add merge_insert to the node and rust APIs (#915) 2024-02-02 13:16:51 -08:00
QianZhu
09cd08222d make it explicit about the vector column data type (#916)
<img width="837" alt="Screenshot 2024-02-01 at 4 23 34 PM"
src="https://github.com/lancedb/lancedb/assets/1305083/4f0f5c5a-2a24-4b00-aad1-ef80a593d964">
[
<img width="838" alt="Screenshot 2024-02-01 at 4 26 03 PM"
src="https://github.com/lancedb/lancedb/assets/1305083/ca073bc8-b518-4be3-811d-8a7184416f07">
](url)

---------

Co-authored-by: Weston Pace <weston.pace@gmail.com>
2024-02-02 09:02:02 -08:00
Bert
a248d7feec fix: add request retry to python client (#917)
Adds capability to the remote python SDK to retry requests (fixes #911)

This can be configured through environment:
- `LANCE_CLIENT_MAX_RETRIES`= total number of retries. Set to 0 to
disable retries. default = 3
- `LANCE_CLIENT_CONNECT_RETRIES` = number of times to retry request in
case of TCP connect failure. default = 3
- `LANCE_CLIENT_READ_RETRIES` = number of times to retry request in case
of HTTP request failure. default = 3
- `LANCE_CLIENT_RETRY_STATUSES` = http statuses for which the request
will be retried. passed as comma separated list of ints. default `500,
502, 503`
- `LANCE_CLIENT_RETRY_BACKOFF_FACTOR` = controls time between retry
requests. see
[here](23f2287eb5/src/urllib3/util/retry.py (L141-L146)).
default = 0.25

Only read requests will be retried:
- list table names
- query
- describe table
- list table indices

This does not add retry capabilities for writes as it could possibly
cause issues in the case where the retried write isn't idempotent. For
example, in the case where the LB times-out the request but the server
completes the request anyway, we might not want to blindly retry an
insert request.
2024-02-02 11:27:29 -05:00
Weston Pace
cc9473a94a docs: add cleanup_old_versions and compact_files to Table for documentation purposes (#900)
Closes #819
2024-02-01 15:06:00 -08:00
Weston Pace
d77e95a4f4 feat: upgrade to lance 0.9.11 and expose merge_insert (#906)
This adds the python bindings requested in #870 The javascript/rust
bindings will be added in a future PR.
2024-02-01 11:36:29 -08:00
Lei Xu
62f053ac92 ci: bump to new version of python action to use node 20 gIthub action runtime (#909)
Github action is deprecating old node-16 runtime.
2024-02-01 11:36:03 -08:00
JacobLinCool
34e10caad2 fix the repo link on npm, add links for homepage and bug report (#910)
- fix the repo link on npm
- add links for homepage and bug report
2024-01-31 21:07:11 -08:00
QianZhu
f5726e2d0c arrow table/f16 example (#907) 2024-01-31 14:41:28 -08:00
Lance Release
12b4fb42fc Updating package-lock.json 2024-01-31 21:18:24 +00:00
Lance Release
1328cd46f1 Updating package-lock.json 2024-01-31 20:29:38 +00:00
Lance Release
0c940ed9f8 Bump version: 0.4.6 → 0.4.7 2024-01-31 20:29:28 +00:00
Lei Xu
5f59e51583 fix(node): pass AWS credentials to db level operations (#908)
Passed the following tests

```ts
const keyId = process.env.AWS_ACCESS_KEY_ID;
const secretKey = process.env.AWS_SECRET_ACCESS_KEY;
const sessionToken = process.env.AWS_SESSION_TOKEN;
const region = process.env.AWS_REGION;

const db = await lancedb.connect({
  uri: "s3://bucket/path",
  awsCredentials: {
    accessKeyId: keyId,
    secretKey: secretKey,
    sessionToken: sessionToken,
  },
  awsRegion: region,
} as lancedb.ConnectionOptions);

  console.log(await db.createTable("test", [{ vector: [1, 2, 3] }]));
  console.log(await db.tableNames());
  console.log(await db.dropTable("test"))
```
2024-01-31 12:05:01 -08:00
Will Jones
8d0ea29f89 docs: provide AWS S3 cleanup and permissions advice (#903)
Adding some more quick advice for how to setup AWS S3 with LanceDB.

---------

Co-authored-by: Prashanth Rao <35005448+prrao87@users.noreply.github.com>
2024-01-31 09:24:54 -08:00
Abraham Lopez
b9468bb980 chore: update JS/TS example in README (#898)
- The JS/TS library actually expects named parameters via an object in
`.createTable()` rather than individual arguments
- Added example on how to search rows by criteria without a vector
search. TS type of `.search()` currently has the `query` parameter as
non-optional so we have to pass undefined for now.
2024-01-30 11:09:45 -08:00
Lei Xu
a42df158a3 ci: change apple silicon runner to free OSS macos-14 target (#901) 2024-01-30 11:05:42 -08:00
Raghav Dixit
9df6905d86 chore(python): GTE embedding function model name update (#902)
Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-01-30 23:56:29 +05:30
Ayush Chaurasia
3ffed89793 feat(python): Hybrid search & Reranker API (#824)
based on https://github.com/lancedb/lancedb/pull/713
- The Reranker api can be plugged into vector only or fts only search
but this PR doesn't do that (see example -
https://txt.cohere.com/rerank/)


### Default reranker -- `LinearCombinationReranker(weight=0.7,
fill=1.0)`

```
table.search("hello", query_type="hybrid").rerank(normalize="score").to_pandas()
```
### Available rerankers
LinearCombinationReranker
```
from lancedb.rerankers import LinearCombinationReranker

# Same as default 
table.search("hello", query_type="hybrid").rerank(
                                      normalize="score", 
                                      reranker=LinearCombinationReranker()
                                     ).to_pandas()

# with custom params
reranker = LinearCombinationReranker(weight=0.3, fill=1.0)
table.search("hello", query_type="hybrid").rerank(
                                      normalize="score", 
                                      reranker=reranker
                                     ).to_pandas()
```

Cohere Reranker
```
from lancedb.rerankers import CohereReranker

# default model.. English and multi-lingual supported. See docstring for available custom params
table.search("hello", query_type="hybrid").rerank(
                                      normalize="rank",  # score or rank
                                      reranker=CohereReranker()
                                     ).to_pandas()

```

CrossEncoderReranker

```
from lancedb.rerankers import CrossEncoderReranker

table.search("hello", query_type="hybrid").rerank(
                                      normalize="rank", 
                                      reranker=CrossEncoderReranker()
                                     ).to_pandas()

```

## Using custom Reranker
```
from lancedb.reranker import Reranker

class CustomReranker(Reranker):
    def rerank_hybrid(self, vector_result, fts_result):
           combined_res = self.merge_results(vector_results, fts_results) # or use custom combination logic
           # Custom rerank logic here
           
           return combined_res
```

- [x] Expand testing
- [x] Make sure usage makes sense
- [x] Run simple benchmarks for correctness (Seeing weird result from
cohere reranker in the toy example)
- Support diverse rerankers by default:
- [x] Cross encoding
- [x] Cohere
- [x] Reciprocal Rank Fusion

---------

Co-authored-by: Chang She <759245+changhiskhan@users.noreply.github.com>
Co-authored-by: Prashanth Rao <35005448+prrao87@users.noreply.github.com>
2024-01-30 19:10:33 +05:30
Prashanth Rao
f150768739 Fix image bgcolor (#891)
Minor fix to change the background color for an image in the docs. It's
now readable in both light and dark modes (earlier version made it
impossible to read in dark mode).
2024-01-30 16:50:29 +05:30
Ayush Chaurasia
b432ecf2f6 doc: Add documentation chatbot for LanceDB (#890)
<img width="1258" alt="Screenshot 2024-01-29 at 10 05 52 PM"
src="https://github.com/lancedb/lancedb/assets/15766192/7c108fde-e993-415c-ad01-72010fd5fe31">
2024-01-30 11:24:57 +05:30
Raghav Dixit
d1a7257810 feat(python): Embedding fn support for gte-mlx/gte-large (#873)
have added testing and an example in the docstring, will be pushing a
separate PR in recipe repo for rag example

---------

Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
2024-01-30 11:21:57 +05:30
Ayush Chaurasia
5c5e23bbb9 chore(python): Temporarily extend remote connection timeout (#888)
Context - https://etoai.slack.com/archives/C05NC5YSW5V/p1706371205883149
2024-01-29 17:34:33 +05:30
Lei Xu
e5796a4836 doc: fix js example of create index (#886) 2024-01-28 17:02:36 -08:00
Lei Xu
b9c5323265 doc: use snippet for rust code example and make sure rust examples run through CI (#885) 2024-01-28 14:30:30 -08:00
Lei Xu
e41a52863a fix: fix doc build to include the source snippet correctly (#883) 2024-01-28 11:55:58 -08:00
Chang She
13acc8a480 doc(rust): minor fixes for Rust quick start. (#878) 2024-01-28 11:40:52 -08:00
Lei Xu
22b9eceb12 chore: convert all js doc test to use snippet. (#881) 2024-01-28 11:39:25 -08:00
Lei Xu
5f62302614 doc: use code snippet for typescript examples (#880)
The typescript code is in a fully function file, that will be run via the CI.
2024-01-27 22:52:37 -08:00
Ayush Chaurasia
d84e0d1db8 feat(python): Aws Bedrock embeddings integration (#822)
Supports amazon titan, cohere english & cohere multi-lingual base
models.
2024-01-28 02:04:15 +05:30
Lei Xu
ac94b2a420 chore: upgrade lance, pylance and datafusion (#879) 2024-01-27 12:31:38 -08:00
Lei Xu
b49bc113c4 chore: add one rust SDK e2e example (#876)
Co-authored-by: Chang She <759245+changhiskhan@users.noreply.github.com>
2024-01-26 22:41:20 -08:00
Lei Xu
77b5b1cf0e doc: update quick start for full rust example (#872) 2024-01-26 16:19:43 -08:00
Lei Xu
e910809de0 chore: bump github actions to v4 due to GHA warnings of node version deprecation (#874) 2024-01-26 15:52:47 -08:00
Lance Release
90b5b55126 Updating package-lock.json 2024-01-26 23:35:58 +00:00
Lance Release
488e4f8452 Updating package-lock.json 2024-01-26 22:40:46 +00:00
Lance Release
ba6f949515 Bump version: 0.4.5 → 0.4.6 2024-01-26 22:40:36 +00:00
Lei Xu
3dd8522bc9 feat(rust): provide connect and connect_with_options in Rust SDK (#871)
* Bring the feature parity of Rust connect methods.
* A global connect method that can connect to local and remote / cloud
table, as the same as in js/python today.
2024-01-26 11:40:11 -08:00
Lei Xu
e01ef63488 chore(rust): simplified version of optimize (#869)
Consolidate various optimize() into one method, similar to postgres
VACCUM in the process of preparing Rust API for public use
2024-01-26 11:36:04 -08:00
Lei Xu
a6cf24b359 feat(napi): Issue queries as node SDK (#868)
* Query as a fluent API and `AsyncIterator<RecordBatch>`
* Much more docs
* Add tests for auto infer vector search columns with different
dimensions.
2024-01-25 22:14:14 -08:00
Lance Release
9a07c9aad8 Updating package-lock.json 2024-01-25 21:49:36 +00:00
Lance Release
d405798952 Updating package-lock.json 2024-01-25 20:54:55 +00:00
Lance Release
e8a8b92b2a Bump version: 0.4.4 → 0.4.5 2024-01-25 20:54:44 +00:00
Lei Xu
66362c6506 fix: release build for node sdk (#861) 2024-01-25 12:51:32 -08:00
252 changed files with 14721 additions and 5160 deletions

View File

@@ -1,5 +1,5 @@
[bumpversion]
current_version = 0.4.4
current_version = 0.4.11
commit = True
message = Bump version: {current_version} → {new_version}
tag = True
@@ -9,4 +9,4 @@ tag_name = v{new_version}
[bumpversion:file:rust/ffi/node/Cargo.toml]
[bumpversion:file:rust/vectordb/Cargo.toml]
[bumpversion:file:rust/lancedb/Cargo.toml]

40
.cargo/config.toml Normal file
View File

@@ -0,0 +1,40 @@
[profile.release]
lto = "fat"
codegen-units = 1
[profile.release-with-debug]
inherits = "release"
debug = true
# Prioritize compile time over runtime performance
codegen-units = 16
lto = "thin"
[target.'cfg(all())']
rustflags = [
"-Wclippy::all",
"-Wclippy::style",
"-Wclippy::fallible_impl_from",
"-Wclippy::manual_let_else",
"-Wclippy::redundant_pub_crate",
"-Wclippy::string_add_assign",
"-Wclippy::string_add",
"-Wclippy::string_lit_as_bytes",
"-Wclippy::string_to_string",
"-Wclippy::use_self",
"-Dclippy::cargo",
"-Dclippy::dbg_macro",
# not too much we can do to avoid multiple crate versions
"-Aclippy::multiple-crate-versions",
"-Aclippy::wildcard_dependencies",
]
[target.x86_64-unknown-linux-gnu]
rustflags = ["-C", "target-cpu=haswell", "-C", "target-feature=+avx2,+fma,+f16c"]
[target.aarch64-apple-darwin]
rustflags = ["-C", "target-cpu=apple-m1", "-C", "target-feature=+neon,+fp16,+fhm,+dotprod"]
# Not all Windows systems have the C runtime installed, so this avoids library
# not found errors on systems that are missing it.
[target.x86_64-pc-windows-msvc]
rustflags = ["-Ctarget-feature=+crt-static"]

View File

@@ -0,0 +1,58 @@
# We create a composite action to be re-used both for testing and for releasing
name: build-linux-wheel
description: "Build a manylinux wheel for lance"
inputs:
python-minor-version:
description: "8, 9, 10, 11, 12"
required: true
args:
description: "--release"
required: false
default: ""
arm-build:
description: "Build for arm64 instead of x86_64"
# Note: this does *not* mean the host is arm64, since we might be cross-compiling.
required: false
default: "false"
runs:
using: "composite"
steps:
- name: CONFIRM ARM BUILD
shell: bash
run: |
echo "ARM BUILD: ${{ inputs.arm-build }}"
- name: Build x86_64 Manylinux wheel
if: ${{ inputs.arm-build == 'false' }}
uses: PyO3/maturin-action@v1
with:
command: build
working-directory: python
target: x86_64-unknown-linux-gnu
manylinux: "2_17"
args: ${{ inputs.args }}
before-script-linux: |
set -e
yum install -y openssl-devel \
&& curl -L https://github.com/protocolbuffers/protobuf/releases/download/v24.4/protoc-24.4-linux-$(uname -m).zip > /tmp/protoc.zip \
&& unzip /tmp/protoc.zip -d /usr/local \
&& rm /tmp/protoc.zip
- name: Build Arm Manylinux Wheel
if: ${{ inputs.arm-build == 'true' }}
uses: PyO3/maturin-action@v1
with:
command: build
working-directory: python
target: aarch64-unknown-linux-gnu
manylinux: "2_24"
args: ${{ inputs.args }}
before-script-linux: |
set -e
apt install -y unzip
if [ $(uname -m) = "x86_64" ]; then
PROTOC_ARCH="x86_64"
else
PROTOC_ARCH="aarch_64"
fi
curl -L https://github.com/protocolbuffers/protobuf/releases/download/v24.4/protoc-24.4-linux-$PROTOC_ARCH.zip > /tmp/protoc.zip \
&& unzip /tmp/protoc.zip -d /usr/local \
&& rm /tmp/protoc.zip

View File

@@ -0,0 +1,25 @@
# We create a composite action to be re-used both for testing and for releasing
name: build_wheel
description: "Build a lance wheel"
inputs:
python-minor-version:
description: "8, 9, 10, 11"
required: true
args:
description: "--release"
required: false
default: ""
runs:
using: "composite"
steps:
- name: Install macos dependency
shell: bash
run: |
brew install protobuf
- name: Build wheel
uses: PyO3/maturin-action@v1
with:
command: build
args: ${{ inputs.args }}
working-directory: python
interpreter: 3.${{ inputs.python-minor-version }}

View File

@@ -0,0 +1,33 @@
# We create a composite action to be re-used both for testing and for releasing
name: build_wheel
description: "Build a lance wheel"
inputs:
python-minor-version:
description: "8, 9, 10, 11"
required: true
args:
description: "--release"
required: false
default: ""
runs:
using: "composite"
steps:
- name: Install Protoc v21.12
working-directory: C:\
run: |
New-Item -Path 'C:\protoc' -ItemType Directory
Set-Location C:\protoc
Invoke-WebRequest https://github.com/protocolbuffers/protobuf/releases/download/v21.12/protoc-21.12-win64.zip -OutFile C:\protoc\protoc.zip
7z x protoc.zip
Add-Content $env:GITHUB_PATH "C:\protoc\bin"
shell: powershell
- name: Build wheel
uses: PyO3/maturin-action@v1
with:
command: build
args: ${{ inputs.args }}
working-directory: python
- uses: actions/upload-artifact@v3
with:
name: windows-wheels
path: python\target\wheels

View File

@@ -16,7 +16,7 @@ jobs:
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
with:
workspaces: rust
@@ -26,4 +26,4 @@ jobs:
sudo apt install -y protobuf-compiler libssl-dev
- name: Publish the package
run: |
cargo publish -p vectordb --all-features --token ${{ secrets.CARGO_REGISTRY_TOKEN }}
cargo publish -p lancedb --all-features --token ${{ secrets.CARGO_REGISTRY_TOKEN }}

View File

@@ -27,9 +27,9 @@ jobs:
runs-on: ubuntu-22.04
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
- name: Set up Python
uses: actions/setup-python@v4
uses: actions/setup-python@v5
with:
python-version: "3.10"
cache: "pip"
@@ -42,7 +42,7 @@ jobs:
- name: Set up node
uses: actions/setup-node@v3
with:
node-version: ${{ matrix.node-version }}
node-version: 20
cache: 'npm'
cache-dependency-path: node/package-lock.json
- uses: Swatinem/rust-cache@v2
@@ -61,10 +61,10 @@ jobs:
working-directory: node
run: |
npx typedoc --plugin typedoc-plugin-markdown --out ../docs/src/javascript src/index.ts
cp ../docs/src/javascript.md ../docs/src/javascript/javascript.md
- name: Build docs
working-directory: docs
run: |
PYTHONPATH=. mkdocs build -f docs/mkdocs.yml
PYTHONPATH=. mkdocs build
- name: Setup Pages
uses: actions/configure-pages@v2
- name: Upload artifact

View File

@@ -18,24 +18,20 @@ on:
env:
# Disable full debug symbol generation to speed up CI build and keep memory down
# "1" means line tables only, which is useful for panic tracebacks.
RUSTFLAGS: "-C debuginfo=1"
RUSTFLAGS: "-C debuginfo=1 -C target-cpu=native -C target-feature=+f16c,+avx2,+fma"
RUST_BACKTRACE: "1"
jobs:
test-python:
name: Test doc python code
runs-on: ${{ matrix.os }}
strategy:
matrix:
python-minor-version: [ "11" ]
os: ["ubuntu-22.04"]
runs-on: "ubuntu-latest"
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
- name: Set up Python
uses: actions/setup-python@v4
uses: actions/setup-python@v5
with:
python-version: 3.${{ matrix.python-minor-version }}
python-version: 3.11
cache: "pip"
cache-dependency-path: "docs/test/requirements.txt"
- name: Build Python
@@ -52,45 +48,42 @@ jobs:
for d in *; do cd "$d"; echo "$d".py; python "$d".py; cd ..; done
test-node:
name: Test doc nodejs code
runs-on: ${{ matrix.os }}
runs-on: "ubuntu-latest"
timeout-minutes: 45
strategy:
matrix:
node-version: [ "18" ]
os: ["ubuntu-22.04"]
fail-fast: false
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Set up Node
uses: actions/setup-node@v3
uses: actions/setup-node@v4
with:
node-version: ${{ matrix.node-version }}
node-version: 20
- name: Install dependecies needed for ubuntu
if: ${{ matrix.os == 'ubuntu-22.04' }}
run: |
sudo apt install -y protobuf-compiler libssl-dev
- name: Install node dependencies
run: |
cd docs/test
npm install
- name: Rust cache
uses: swatinem/rust-cache@v2
- name: Install LanceDB
- name: Install node dependencies
run: |
cd docs/test/node_modules/vectordb
sudo swapoff -a
sudo fallocate -l 8G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo swapon --show
cd node
npm ci
npm run build-release
npm run tsc
- name: Create test files
run: |
cd docs/test
node md_testing.js
cd ../docs
npm install
- name: Test
env:
LANCEDB_URI: ${{ secrets.LANCEDB_URI }}
LANCEDB_DEV_API_KEY: ${{ secrets.LANCEDB_DEV_API_KEY }}
run: |
cd docs/test/node
for d in *; do cd "$d"; echo "$d".js; node "$d".js; cd ..; done
cd docs
npm t

View File

@@ -26,7 +26,7 @@ jobs:
runs-on: ubuntu-latest
steps:
- name: Check out main
uses: actions/checkout@v3
uses: actions/checkout@v4
with:
ref: main
persist-credentials: false
@@ -37,10 +37,10 @@ jobs:
run: |
git config user.name 'Lance Release'
git config user.email 'lance-dev@lancedb.com'
- name: Set up Python 3.10
uses: actions/setup-python@v4
- name: Set up Python 3.11
uses: actions/setup-python@v5
with:
python-version: "3.10"
python-version: "3.11"
- name: Bump version, create tag and commit
run: |
pip install bump2version

View File

@@ -32,7 +32,7 @@ jobs:
shell: bash
working-directory: node
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
@@ -57,7 +57,7 @@ jobs:
shell: bash
working-directory: node
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
@@ -89,7 +89,7 @@ jobs:
shell: bash
working-directory: node
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
@@ -128,7 +128,7 @@ jobs:
# this one is for dynamodb
DYNAMODB_ENDPOINT: http://localhost:4566
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true

View File

@@ -29,7 +29,7 @@ jobs:
shell: bash
working-directory: nodejs
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
@@ -61,7 +61,7 @@ jobs:
shell: bash
working-directory: nodejs
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
@@ -84,13 +84,13 @@ jobs:
run: npm run test
macos:
timeout-minutes: 30
runs-on: "macos-13"
runs-on: "macos-14"
defaults:
run:
shell: bash
working-directory: nodejs
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true

View File

@@ -15,7 +15,7 @@ jobs:
working-directory: node
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
- uses: actions/setup-node@v3
with:
node-version: 20
@@ -45,13 +45,13 @@ jobs:
runner: macos-13
- arch: aarch64-apple-darwin
# xlarge is implicitly arm64.
runner: macos-13-xlarge
runner: macos-14
runs-on: ${{ matrix.config.runner }}
# Only runs on tags that matches the make-release action
if: startsWith(github.ref, 'refs/tags/v')
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
- name: Install system dependencies
run: brew install protobuf
- name: Install npm dependencies
@@ -66,7 +66,7 @@ jobs:
name: native-darwin
path: |
node/dist/lancedb-vectordb-darwin*.tgz
node-linux:
name: node-linux (${{ matrix.config.arch}}-unknown-linux-gnu
@@ -80,10 +80,25 @@ jobs:
- arch: x86_64
runner: ubuntu-latest
- arch: aarch64
runner: buildjet-4vcpu-ubuntu-2204-arm
# For successful fat LTO builds, we need a large runner to avoid OOM errors.
runner: buildjet-16vcpu-ubuntu-2204-arm
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
# Buildjet aarch64 runners have only 1.5 GB RAM per core, vs 3.5 GB per core for
# x86_64 runners. To avoid OOM errors on ARM, we create a swap file.
- name: Configure aarch64 build
if: ${{ matrix.config.arch == 'aarch64' }}
run: |
free -h
sudo fallocate -l 16G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo "/swapfile swap swap defaults 0 0" >> sudo /etc/fstab
# print info
swapon --show
free -h
- name: Build Linux Artifacts
run: |
bash ci/build_linux_artifacts.sh ${{ matrix.config.arch }}
@@ -104,7 +119,7 @@ jobs:
target: [x86_64-pc-windows-msvc]
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
- name: Install Protoc v21.12
working-directory: C:\
run: |
@@ -154,7 +169,7 @@ jobs:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
with:
ref: main
persist-credentials: false

View File

@@ -2,30 +2,91 @@ name: PyPI Publish
on:
release:
types: [ published ]
types: [published]
jobs:
publish:
runs-on: ubuntu-latest
# Only runs on tags that matches the python-make-release action
if: startsWith(github.ref, 'refs/tags/python-v')
defaults:
run:
shell: bash
working-directory: python
linux:
timeout-minutes: 60
strategy:
matrix:
python-minor-version: ["8"]
platform:
- x86_64
- aarch64
runs-on: "ubuntu-22.04"
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v4
with:
python-version: "3.8"
- name: Build distribution
run: |
ls -la
pip install wheel setuptools --upgrade
python setup.py sdist bdist_wheel
- name: Publish
uses: pypa/gh-action-pypi-publish@v1.8.5
python-version: 3.${{ matrix.python-minor-version }}
- uses: ./.github/workflows/build_linux_wheel
with:
password: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
packages-dir: python/dist
python-minor-version: ${{ matrix.python-minor-version }}
args: "--release --strip"
arm-build: ${{ matrix.platform == 'aarch64' }}
- uses: ./.github/workflows/upload_wheel
with:
token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
repo: "pypi"
mac:
timeout-minutes: 60
runs-on: ${{ matrix.config.runner }}
strategy:
matrix:
python-minor-version: ["8"]
config:
- target: x86_64-apple-darwin
runner: macos-13
- target: aarch64-apple-darwin
runner: macos-14
env:
MACOSX_DEPLOYMENT_TARGET: 10.15
steps:
- uses: actions/checkout@v4
with:
ref: ${{ inputs.ref }}
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v4
with:
python-version: 3.12
- uses: ./.github/workflows/build_mac_wheel
with:
python-minor-version: ${{ matrix.python-minor-version }}
args: "--release --strip --target ${{ matrix.config.target }}"
- uses: ./.github/workflows/upload_wheel
with:
python-minor-version: ${{ matrix.python-minor-version }}
token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
repo: "pypi"
windows:
timeout-minutes: 60
runs-on: windows-latest
strategy:
matrix:
python-minor-version: ["8"]
steps:
- uses: actions/checkout@v4
with:
ref: ${{ inputs.ref }}
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v4
with:
python-version: 3.${{ matrix.python-minor-version }}
- uses: ./.github/workflows/build_windows_wheel
with:
python-minor-version: ${{ matrix.python-minor-version }}
args: "--release --strip"
vcpkg_token: ${{ secrets.VCPKG_GITHUB_PACKAGES }}
- uses: ./.github/workflows/upload_wheel
with:
python-minor-version: ${{ matrix.python-minor-version }}
token: ${{ secrets.LANCEDB_PYPI_API_TOKEN }}
repo: "pypi"

View File

@@ -26,7 +26,7 @@ jobs:
runs-on: ubuntu-latest
steps:
- name: Check out main
uses: actions/checkout@v3
uses: actions/checkout@v4
with:
ref: main
persist-credentials: false
@@ -37,10 +37,10 @@ jobs:
run: |
git config user.name 'Lance Release'
git config user.email 'lance-dev@lancedb.com'
- name: Set up Python 3.10
uses: actions/setup-python@v4
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: "3.10"
python-version: "3.11"
- name: Bump version, create tag and commit
working-directory: python
run: |

View File

@@ -14,49 +14,133 @@ concurrency:
cancel-in-progress: true
jobs:
linux:
lint:
name: "Lint"
timeout-minutes: 30
strategy:
matrix:
python-minor-version: [ "8", "9", "10", "11" ]
runs-on: "ubuntu-22.04"
defaults:
run:
shell: bash
working-directory: python
steps:
- uses: actions/checkout@v3
with:
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v4
with:
python-version: 3.${{ matrix.python-minor-version }}
- name: Install lancedb
run: |
pip install -e .[tests]
pip install tantivy@git+https://github.com/quickwit-oss/tantivy-py#164adc87e1a033117001cf70e38c82a53014d985
pip install pytest pytest-mock ruff
- name: Format check
run: ruff format --check .
- name: Lint
run: ruff .
- name: Run tests
run: pytest -m "not slow" -x -v --durations=30 tests
- name: doctest
run: pytest --doctest-modules lancedb
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: "3.11"
- name: Install ruff
run: |
pip install ruff==0.2.2
- name: Format check
run: ruff format --check .
- name: Lint
run: ruff .
doctest:
name: "Doctest"
timeout-minutes: 30
runs-on: "ubuntu-22.04"
defaults:
run:
shell: bash
working-directory: python
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: "3.11"
cache: "pip"
- name: Install protobuf
run: |
sudo apt update
sudo apt install -y protobuf-compiler
- uses: Swatinem/rust-cache@v2
with:
workspaces: python
- name: Install
run: |
pip install -e .[tests,dev,embeddings]
pip install tantivy@git+https://github.com/quickwit-oss/tantivy-py#164adc87e1a033117001cf70e38c82a53014d985
pip install mlx
- name: Doctest
run: pytest --doctest-modules python/lancedb
linux:
name: "Linux: python-3.${{ matrix.python-minor-version }}"
timeout-minutes: 30
strategy:
matrix:
python-minor-version: ["8", "11"]
runs-on: "ubuntu-22.04"
defaults:
run:
shell: bash
working-directory: python
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Install protobuf
run: |
sudo apt update
sudo apt install -y protobuf-compiler
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: 3.${{ matrix.python-minor-version }}
- uses: Swatinem/rust-cache@v2
with:
workspaces: python
- uses: ./.github/workflows/build_linux_wheel
- uses: ./.github/workflows/run_tests
# Make sure wheels are not included in the Rust cache
- name: Delete wheels
run: rm -rf target/wheels
platform:
name: "Platform: ${{ matrix.config.name }}"
name: "Mac: ${{ matrix.config.name }}"
timeout-minutes: 30
strategy:
matrix:
config:
- name: x86 Mac
- name: x86
runner: macos-13
- name: Arm Mac
runner: macos-13-xlarge
- name: x86 Windows
- name: Arm
runner: macos-14
runs-on: "${{ matrix.config.runner }}"
defaults:
run:
shell: bash
working-directory: python
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: "3.11"
- uses: Swatinem/rust-cache@v2
with:
workspaces: python
- uses: ./.github/workflows/build_mac_wheel
- uses: ./.github/workflows/run_tests
# Make sure wheels are not included in the Rust cache
- name: Delete wheels
run: rm -rf target/wheels
windows:
name: "Windows: ${{ matrix.config.name }}"
timeout-minutes: 30
strategy:
matrix:
config:
- name: x86
runner: windows-latest
runs-on: "${{ matrix.config.runner }}"
defaults:
@@ -64,21 +148,22 @@ jobs:
shell: bash
working-directory: python
steps:
- uses: actions/checkout@v3
with:
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v4
with:
python-version: "3.11"
- name: Install lancedb
run: |
pip install -e .[tests]
pip install tantivy@git+https://github.com/quickwit-oss/tantivy-py#164adc87e1a033117001cf70e38c82a53014d985
pip install pytest pytest-mock
- name: Run tests
run: pytest -m "not slow" -x -v --durations=30 tests
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: "3.11"
- uses: Swatinem/rust-cache@v2
with:
workspaces: python
- uses: ./.github/workflows/build_windows_wheel
- uses: ./.github/workflows/run_tests
# Make sure wheels are not included in the Rust cache
- name: Delete wheels
run: rm -rf target/wheels
pydantic1x:
timeout-minutes: 30
runs-on: "ubuntu-22.04"
@@ -87,21 +172,22 @@ jobs:
shell: bash
working-directory: python
steps:
- uses: actions/checkout@v3
with:
fetch-depth: 0
lfs: true
- name: Set up Python
uses: actions/setup-python@v4
with:
python-version: 3.9
- name: Install lancedb
run: |
pip install "pydantic<2"
pip install -e .[tests]
pip install tantivy@git+https://github.com/quickwit-oss/tantivy-py#164adc87e1a033117001cf70e38c82a53014d985
pip install pytest pytest-mock
- name: Run tests
run: pytest -m "not slow" -x -v --durations=30 tests
- name: doctest
run: pytest --doctest-modules lancedb
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- name: Install dependencies
run: |
sudo apt update
sudo apt install -y protobuf-compiler
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: 3.9
- name: Install lancedb
run: |
pip install "pydantic<2"
pip install -e .[tests]
pip install tantivy@git+https://github.com/quickwit-oss/tantivy-py#164adc87e1a033117001cf70e38c82a53014d985
- name: Run tests
run: pytest -m "not slow" -x -v --durations=30 python/tests

View File

@@ -0,0 +1,37 @@
name: LanceDb Cloud Integration Test
on:
workflow_run:
workflows: [Rust]
types:
- completed
env:
LANCEDB_PROJECT: ${{ secrets.LANCEDB_PROJECT }}
LANCEDB_API_KEY: ${{ secrets.LANCEDB_API_KEY }}
LANCEDB_REGION: ${{ secrets.LANCEDB_REGION }}
jobs:
test:
timeout-minutes: 30
runs-on: ubuntu-22.04
defaults:
run:
shell: bash
working-directory: rust
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
- uses: Swatinem/rust-cache@v2
with:
workspaces: rust
- name: Install dependencies
run: |
sudo apt update
sudo apt install -y protobuf-compiler libssl-dev
- name: Build
run: cargo build --all-features
- name: Run Integration test
run: cargo test --tests -- --ignored

17
.github/workflows/run_tests/action.yml vendored Normal file
View File

@@ -0,0 +1,17 @@
name: run-tests
description: "Install lance wheel and run unit tests"
inputs:
python-minor-version:
required: true
description: "8 9 10 11 12"
runs:
using: "composite"
steps:
- name: Install lancedb
shell: bash
run: |
pip3 install $(ls target/wheels/lancedb-*.whl)[tests,dev]
- name: pytest
shell: bash
run: pytest -m "not slow" -x -v --durations=30 python/python/tests

View File

@@ -32,7 +32,7 @@ jobs:
shell: bash
working-directory: rust
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
@@ -55,7 +55,7 @@ jobs:
shell: bash
working-directory: rust
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
@@ -70,18 +70,20 @@ jobs:
run: cargo build --all-features
- name: Run tests
run: cargo test --all-features
- name: Run examples
run: cargo run --example simple
macos:
timeout-minutes: 30
strategy:
matrix:
mac-runner: [ "macos-13", "macos-13-xlarge" ]
mac-runner: [ "macos-13", "macos-14" ]
runs-on: "${{ matrix.mac-runner }}"
defaults:
run:
shell: bash
working-directory: rust
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
with:
fetch-depth: 0
lfs: true
@@ -99,7 +101,7 @@ jobs:
windows:
runs-on: windows-2022
steps:
- uses: actions/checkout@v3
- uses: actions/checkout@v4
- uses: Swatinem/rust-cache@v2
with:
workspaces: rust
@@ -117,3 +119,4 @@ jobs:
$env:VCPKG_ROOT = $env:VCPKG_INSTALLATION_ROOT
cargo build
cargo test

View File

@@ -8,7 +8,7 @@ jobs:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v3
uses: actions/checkout@v4
with:
ref: main
persist-credentials: false

View File

@@ -0,0 +1,29 @@
name: upload-wheel
description: "Upload wheels to Pypi"
inputs:
os:
required: true
description: "ubuntu-22.04 or macos-13"
repo:
required: false
description: "pypi or testpypi"
default: "pypi"
token:
required: true
description: "release token for the repo"
runs:
using: "composite"
steps:
- name: Install dependencies
shell: bash
run: |
python -m pip install --upgrade pip
pip install twine
- name: Publish wheel
env:
TWINE_USERNAME: __token__
TWINE_PASSWORD: ${{ inputs.token }}
shell: bash
run: twine upload --repository ${{ inputs.repo }} target/wheels/lancedb-*.whl

7
.gitignore vendored
View File

@@ -22,6 +22,11 @@ python/dist
**/.hypothesis
# Compiled Dynamic libraries
*.so
*.dylib
*.dll
## Javascript
*.node
**/node_modules
@@ -34,4 +39,6 @@ dist
## Rust
target
**/sccache.log
Cargo.lock

View File

@@ -5,17 +5,8 @@ repos:
- id: check-yaml
- id: end-of-file-fixer
- id: trailing-whitespace
- repo: https://github.com/psf/black
rev: 22.12.0
hooks:
- id: black
- repo: https://github.com/astral-sh/ruff-pre-commit
# Ruff version.
rev: v0.0.277
rev: v0.2.2
hooks:
- id: ruff
- repo: https://github.com/pycqa/isort
rev: 5.12.0
hooks:
- id: isort
name: isort (python)

View File

@@ -1,29 +1,32 @@
[workspace]
members = ["rust/ffi/node", "rust/vectordb", "nodejs"]
members = ["rust/ffi/node", "rust/lancedb", "nodejs", "python"]
# Python package needs to be built by maturin.
exclude = ["python"]
resolver = "2"
[workspace.package]
edition = "2021"
authors = ["Lance Devs <dev@lancedb.com>"]
authors = ["LanceDB Devs <dev@lancedb.com>"]
license = "Apache-2.0"
repository = "https://github.com/lancedb/lancedb"
description = "Serverless, low-latency vector database for AI applications"
keywords = ["lancedb", "lance", "database", "vector", "search"]
categories = ["database-implementations"]
[workspace.dependencies]
lance = { "version" = "=0.9.9", "features" = ["dynamodb"] }
lance-index = { "version" = "=0.9.9" }
lance-linalg = { "version" = "=0.9.9" }
lance-testing = { "version" = "=0.9.9" }
lance = { "version" = "=0.10.1", "features" = ["dynamodb"] }
lance-index = { "version" = "=0.10.1" }
lance-linalg = { "version" = "=0.10.1" }
lance-testing = { "version" = "=0.10.1" }
# Note that this one does not include pyarrow
arrow = { version = "49.0.0", optional = false }
arrow-array = "49.0"
arrow-data = "49.0"
arrow-ipc = "49.0"
arrow-ord = "49.0"
arrow-schema = "49.0"
arrow-arith = "49.0"
arrow-cast = "49.0"
arrow = { version = "50.0", optional = false }
arrow-array = "50.0"
arrow-data = "50.0"
arrow-ipc = "50.0"
arrow-ord = "50.0"
arrow-schema = "50.0"
arrow-arith = "50.0"
arrow-cast = "50.0"
async-trait = "0"
chrono = "0.4.23"
half = { "version" = "=2.3.1", default-features = false, features = [

View File

@@ -51,12 +51,19 @@ npm install vectordb
const lancedb = require('vectordb');
const db = await lancedb.connect('data/sample-lancedb');
const table = await db.createTable('vectors',
[{ id: 1, vector: [0.1, 0.2], item: "foo", price: 10 },
{ id: 2, vector: [1.1, 1.2], item: "bar", price: 50 }])
const table = await db.createTable({
name: 'vectors',
data: [
{ id: 1, vector: [0.1, 0.2], item: "foo", price: 10 },
{ id: 2, vector: [1.1, 1.2], item: "bar", price: 50 }
]
})
const query = table.search([0.1, 0.3]).limit(2);
const results = await query.execute();
// You can also search for rows by specific criteria without involving a vector search.
const rowsByCriteria = await table.search(undefined).where("price >= 10").execute();
```
**Python**

View File

@@ -13,7 +13,9 @@ docker build \
.
popd
# We turn on memory swap to avoid OOM killer
docker run \
-v $(pwd):/io -w /io \
--memory-swap=-1 \
lancedb-node-manylinux \
bash ci/manylinux_node/build.sh $ARCH

27
dockerfiles/Dockerfile Normal file
View File

@@ -0,0 +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
# 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 && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
RUN apt-get -y update &&\
apt-get -y upgrade && \
apt-get -y install git
# Verify installations
RUN python --version && \
rustc --version && \
protoc --version
RUN pip install tantivy lancedb

View File

@@ -33,3 +33,12 @@ You can run a local server to test the docs prior to deployment by navigating to
cd docs
mkdocs serve
```
### Run doctest for typescript example
```bash
cd lancedb/docs
npm i
npm run build
npm run all
```

View File

@@ -57,6 +57,16 @@ plugins:
- https://arrow.apache.org/docs/objects.inv
- https://pandas.pydata.org/docs/objects.inv
- mkdocs-jupyter
- ultralytics:
verbose: True
enabled: True
default_image: "assets/lancedb_and_lance.png" # Default image for all pages
add_image: True # Automatically add meta image
add_keywords: True # Add page keywords in the header tag
add_share_buttons: True # Add social share buttons
add_authors: False # Display page authors
add_desc: False
add_dates: False
markdown_extensions:
- admonition
@@ -67,7 +77,9 @@ markdown_extensions:
line_spans: __span
pygments_lang_class: true
- pymdownx.inlinehilite
- pymdownx.snippets
- pymdownx.snippets:
base_path: ..
dedent_subsections: true
- pymdownx.superfences
- pymdownx.tabbed:
alternate_style: true
@@ -88,15 +100,18 @@ nav:
- Building an ANN index: ann_indexes.md
- Vector Search: search.md
- Full-text search: fts.md
- Hybrid search:
- Overview: hybrid_search/hybrid_search.md
- Comparing Rerankers: hybrid_search/eval.md
- Airbnb financial data example: notebooks/hybrid_search.ipynb
- Filtering: sql.md
- Versioning & Reproducibility: notebooks/reproducibility.ipynb
- Configuring Storage: guides/storage.md
- 🧬 Managing embeddings:
- Overview: embeddings/index.md
- Explicit management: embeddings/embedding_explicit.md
- Implicit management: embeddings/embedding_functions.md
- Available Functions: embeddings/default_embedding_functions.md
- Custom Embedding Functions: embeddings/api.md
- Embedding functions: embeddings/embedding_functions.md
- Available models: embeddings/default_embedding_functions.md
- User-defined embedding functions: embeddings/custom_embedding_function.md
- "Example: Multi-lingual semantic search": notebooks/multi_lingual_example.ipynb
- "Example: MultiModal CLIP Embeddings": notebooks/DisappearingEmbeddingFunction.ipynb
- 🔌 Integrations:
@@ -129,9 +144,13 @@ nav:
- 💭 FAQs: faq.md
- ⚙️ API reference:
- 🐍 Python: python/python.md
- 👾 JavaScript: javascript/javascript.md
- 👾 JavaScript: javascript/modules.md
- 🦀 Rust: https://docs.rs/vectordb/latest/vectordb/
- ☁️ LanceDB Cloud:
- Overview: cloud/index.md
- API reference:
- 🐍 Python: python/saas-python.md
- 👾 JavaScript: javascript/saas-modules.md
- Quick start: basic.md
@@ -145,15 +164,18 @@ nav:
- Building an ANN index: ann_indexes.md
- Vector Search: search.md
- Full-text search: fts.md
- Hybrid search:
- Overview: hybrid_search/hybrid_search.md
- Comparing Rerankers: hybrid_search/eval.md
- Airbnb financial data example: notebooks/hybrid_search.ipynb
- Filtering: sql.md
- Versioning & Reproducibility: notebooks/reproducibility.ipynb
- Configuring Storage: guides/storage.md
- Managing Embeddings:
- Overview: embeddings/index.md
- Explicit management: embeddings/embedding_explicit.md
- Implicit management: embeddings/embedding_functions.md
- Available Functions: embeddings/default_embedding_functions.md
- Custom Embedding Functions: embeddings/api.md
- Embedding functions: embeddings/embedding_functions.md
- Available models: embeddings/default_embedding_functions.md
- User-defined embedding functions: embeddings/custom_embedding_function.md
- "Example: Multi-lingual semantic search": notebooks/multi_lingual_example.ipynb
- "Example: MultiModal CLIP Embeddings": notebooks/DisappearingEmbeddingFunction.ipynb
- Integrations:
@@ -181,14 +203,20 @@ nav:
- TransformersJS Embedding Search: examples/transformerjs_embedding_search_nodejs.md
- API reference:
- Python: python/python.md
- Javascript: javascript/javascript.md
- Javascript: javascript/modules.md
- LanceDB Cloud:
- Overview: cloud/index.md
- API reference:
- 🐍 Python: python/saas-python.md
- 👾 JavaScript: javascript/saas-modules.md
extra_css:
- styles/global.css
- styles/extra.css
extra_javascript:
- "extra_js/init_ask_ai_widget.js"
extra:
analytics:
provider: google

132
docs/package-lock.json generated Normal file
View File

@@ -0,0 +1,132 @@
{
"name": "lancedb-docs-test",
"version": "1.0.0",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "lancedb-docs-test",
"version": "1.0.0",
"license": "Apache 2",
"dependencies": {
"apache-arrow": "file:../node/node_modules/apache-arrow",
"vectordb": "file:../node"
},
"devDependencies": {
"@types/node": "^20.11.8",
"typescript": "^5.3.3"
}
},
"../node": {
"name": "vectordb",
"version": "0.4.6",
"cpu": [
"x64",
"arm64"
],
"license": "Apache-2.0",
"os": [
"darwin",
"linux",
"win32"
],
"dependencies": {
"@apache-arrow/ts": "^14.0.2",
"@neon-rs/load": "^0.0.74",
"apache-arrow": "^14.0.2",
"axios": "^1.4.0"
},
"devDependencies": {
"@neon-rs/cli": "^0.0.160",
"@types/chai": "^4.3.4",
"@types/chai-as-promised": "^7.1.5",
"@types/mocha": "^10.0.1",
"@types/node": "^18.16.2",
"@types/sinon": "^10.0.15",
"@types/temp": "^0.9.1",
"@types/uuid": "^9.0.3",
"@typescript-eslint/eslint-plugin": "^5.59.1",
"cargo-cp-artifact": "^0.1",
"chai": "^4.3.7",
"chai-as-promised": "^7.1.1",
"eslint": "^8.39.0",
"eslint-config-standard-with-typescript": "^34.0.1",
"eslint-plugin-import": "^2.26.0",
"eslint-plugin-n": "^15.7.0",
"eslint-plugin-promise": "^6.1.1",
"mocha": "^10.2.0",
"openai": "^4.24.1",
"sinon": "^15.1.0",
"temp": "^0.9.4",
"ts-node": "^10.9.1",
"ts-node-dev": "^2.0.0",
"typedoc": "^0.24.7",
"typedoc-plugin-markdown": "^3.15.3",
"typescript": "*",
"uuid": "^9.0.0"
},
"optionalDependencies": {
"@lancedb/vectordb-darwin-arm64": "0.4.6",
"@lancedb/vectordb-darwin-x64": "0.4.6",
"@lancedb/vectordb-linux-arm64-gnu": "0.4.6",
"@lancedb/vectordb-linux-x64-gnu": "0.4.6",
"@lancedb/vectordb-win32-x64-msvc": "0.4.6"
}
},
"../node/node_modules/apache-arrow": {
"version": "14.0.2",
"license": "Apache-2.0",
"dependencies": {
"@types/command-line-args": "5.2.0",
"@types/command-line-usage": "5.0.2",
"@types/node": "20.3.0",
"@types/pad-left": "2.1.1",
"command-line-args": "5.2.1",
"command-line-usage": "7.0.1",
"flatbuffers": "23.5.26",
"json-bignum": "^0.0.3",
"pad-left": "^2.1.0",
"tslib": "^2.5.3"
},
"bin": {
"arrow2csv": "bin/arrow2csv.js"
}
},
"node_modules/@types/node": {
"version": "20.11.8",
"resolved": "https://registry.npmjs.org/@types/node/-/node-20.11.8.tgz",
"integrity": "sha512-i7omyekpPTNdv4Jb/Rgqg0RU8YqLcNsI12quKSDkRXNfx7Wxdm6HhK1awT3xTgEkgxPn3bvnSpiEAc7a7Lpyow==",
"dev": true,
"dependencies": {
"undici-types": "~5.26.4"
}
},
"node_modules/apache-arrow": {
"resolved": "../node/node_modules/apache-arrow",
"link": true
},
"node_modules/typescript": {
"version": "5.3.3",
"resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
"integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
"dev": true,
"bin": {
"tsc": "bin/tsc",
"tsserver": "bin/tsserver"
},
"engines": {
"node": ">=14.17"
}
},
"node_modules/undici-types": {
"version": "5.26.5",
"resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
"integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==",
"dev": true
},
"node_modules/vectordb": {
"resolved": "../node",
"link": true
}
}
}

20
docs/package.json Normal file
View File

@@ -0,0 +1,20 @@
{
"name": "lancedb-docs-test",
"version": "1.0.0",
"description": "auto-generated tests from doc",
"author": "dev@lancedb.com",
"license": "Apache 2",
"dependencies": {
"apache-arrow": "file:../node/node_modules/apache-arrow",
"vectordb": "file:../node"
},
"scripts": {
"build": "tsc -b && cd ../node && npm run build-release",
"example": "npm run build && node",
"test": "npm run build && ls dist/*.js | xargs -n 1 node"
},
"devDependencies": {
"@types/node": "^20.11.8",
"typescript": "^5.3.3"
}
}

View File

@@ -2,4 +2,5 @@ mkdocs==1.5.3
mkdocs-jupyter==0.24.1
mkdocs-material==9.5.3
mkdocstrings[python]==0.20.0
pydantic
pydantic
mkdocs-ultralytics-plugin==0.0.44

View File

@@ -7,7 +7,7 @@ for brute-force scanning of the entire vector space.
A vector index is faster but less accurate than exhaustive search (kNN or flat search).
LanceDB provides many parameters to fine-tune the index's size, the speed of queries, and the accuracy of results.
Currently, LanceDB does *not* automatically create the ANN index.
Currently, LanceDB does _not_ automatically create the ANN index.
LanceDB has optimized code for kNN as well. For many use-cases, datasets under 100K vectors won't require index creation at all.
If you can live with <100ms latency, skipping index creation is a simpler workflow while guaranteeing 100% recall.
@@ -17,16 +17,17 @@ In the future we will look to automatically create and configure the ANN index a
Lance can support multiple index types, the most widely used one is `IVF_PQ`.
* `IVF_PQ`: use **Inverted File Index (IVF)** to first divide the dataset into `N` partitions,
and then use **Product Quantization** to compress vectors in each partition.
* `DiskANN` (**Experimental**): organize the vector as a on-disk graph, where the vertices approximately
represent the nearest neighbors of each vector.
- `IVF_PQ`: use **Inverted File Index (IVF)** to first divide the dataset into `N` partitions,
and then use **Product Quantization** to compress vectors in each partition.
- `DiskANN` (**Experimental**): organize the vector as a on-disk graph, where the vertices approximately
represent the nearest neighbors of each vector.
## Creating an IVF_PQ Index
Lance supports `IVF_PQ` index type by default.
=== "Python"
Creating indexes is done via the [create_index](https://lancedb.github.io/lancedb/python/#lancedb.table.LanceTable.create_index) method.
```python
@@ -46,25 +47,20 @@ Lance supports `IVF_PQ` index type by default.
tbl.create_index(num_partitions=256, num_sub_vectors=96)
```
=== "Javascript"
```javascript
const vectordb = require('vectordb')
const db = await vectordb.connect('data/sample-lancedb')
=== "Typescript"
let data = []
for (let i = 0; i < 10_000; i++) {
data.push({vector: Array(1536).fill(i), id: `${i}`, content: "", longId: `${i}`},)
}
const table = await db.createTable('my_vectors', data)
await table.createIndex({ type: 'ivf_pq', column: 'vector', num_partitions: 256, num_sub_vectors: 96 })
```typescript
--8<--- "docs/src/ann_indexes.ts:import"
--8<-- "docs/src/ann_indexes.ts:ingest"
```
- **metric** (default: "L2"): The distance metric to use. By default it uses euclidean distance "`L2`".
We also support "cosine" and "dot" distance as well.
We also support "cosine" and "dot" distance as well.
- **num_partitions** (default: 256): The number of partitions of the index.
- **num_sub_vectors** (default: 96): The number of sub-vectors (M) that will be created during Product Quantization (PQ).
For D dimensional vector, it will be divided into `M` of `D/M` sub-vectors, each of which is presented by
a single PQ code.
For D dimensional vector, it will be divided into `M` of `D/M` sub-vectors, each of which is presented by
a single PQ code.
<figure markdown>
![IVF PQ](./assets/ivf_pq.png)
@@ -78,7 +74,7 @@ Using GPU for index creation requires [PyTorch>2.0](https://pytorch.org/) being
You can specify the GPU device to train IVF partitions via
- **accelerator**: Specify to ``cuda`` or ``mps`` (on Apple Silicon) to enable GPU training.
- **accelerator**: Specify to `cuda` or `mps` (on Apple Silicon) to enable GPU training.
=== "Linux"
@@ -106,10 +102,9 @@ You can specify the GPU device to train IVF partitions via
Trouble shootings:
If you see ``AssertionError: Torch not compiled with CUDA enabled``, you need to [install
If you see `AssertionError: Torch not compiled with CUDA enabled`, you need to [install
PyTorch with CUDA support](https://pytorch.org/get-started/locally/).
## Querying an ANN Index
Querying vector indexes is done via the [search](https://lancedb.github.io/lancedb/python/#lancedb.table.LanceTable.search) function.
@@ -127,6 +122,7 @@ There are a couple of parameters that can be used to fine-tune the search:
Note: refine_factor is only applicable if an ANN index is present. If specified on a table without an ANN index, it is ignored.
=== "Python"
```python
tbl.search(np.random.random((1536))) \
.limit(2) \
@@ -134,41 +130,35 @@ There are a couple of parameters that can be used to fine-tune the search:
.refine_factor(10) \
.to_pandas()
```
```
```text
vector item _distance
0 [0.44949695, 0.8444449, 0.06281311, 0.23338133... item 1141 103.575333
1 [0.48587373, 0.269207, 0.15095535, 0.65531915,... item 3953 108.393867
```
=== "Javascript"
```javascript
const results_1 = await table
.search(Array(1536).fill(1.2))
.limit(2)
.nprobes(20)
.refineFactor(10)
.execute()
=== "Typescript"
```typescript
--8<-- "docs/src/ann_indexes.ts:search1"
```
The search will return the data requested in addition to the distance of each item.
### Filtering (where clause)
You can further filter the elements returned by a search using a where clause.
=== "Python"
```python
tbl.search(np.random.random((1536))).where("item != 'item 1141'").to_pandas()
```
=== "Javascript"
=== "Typescript"
```javascript
const results_2 = await table
.search(Array(1536).fill(1.2))
.where("id != '1141'")
.limit(2)
.execute()
--8<-- "docs/src/ann_indexes.ts:search2"
```
### Projections (select clause)
@@ -176,23 +166,23 @@ You can further filter the elements returned by a search using a where clause.
You can select the columns returned by the query using a select clause.
=== "Python"
```python
tbl.search(np.random.random((1536))).select(["vector"]).to_pandas()
```
```
vector _distance
```text
vector _distance
0 [0.30928212, 0.022668175, 0.1756372, 0.4911822... 93.971092
1 [0.2525465, 0.01723831, 0.261568, 0.002007689,... 95.173485
...
```
=== "Javascript"
```javascript
const results_3 = await table
.search(Array(1536).fill(1.2))
.select(["id"])
.limit(2)
.execute()
=== "Typescript"
```typescript
--8<-- "docs/src/ann_indexes.ts:search3"
```
## FAQ
@@ -221,4 +211,4 @@ On `SIFT-1M` dataset, our benchmark shows that keeping each partition 1K-4K rows
`num_sub_vectors` specifies how many Product Quantization (PQ) short codes to generate on each vector. Because
PQ is a lossy compression of the original vector, a higher `num_sub_vectors` usually results in
less space distortion, and thus yields better accuracy. However, a higher `num_sub_vectors` also causes heavier I/O and
more PQ computation, and thus, higher latency. `dimension / num_sub_vectors` should be a multiple of 8 for optimum SIMD efficiency.
more PQ computation, and thus, higher latency. `dimension / num_sub_vectors` should be a multiple of 8 for optimum SIMD efficiency.

53
docs/src/ann_indexes.ts Normal file
View File

@@ -0,0 +1,53 @@
// --8<-- [start:import]
import * as vectordb from "vectordb";
// --8<-- [end:import]
(async () => {
// --8<-- [start:ingest]
const db = await vectordb.connect("data/sample-lancedb");
let data = [];
for (let i = 0; i < 10_000; i++) {
data.push({
vector: Array(1536).fill(i),
id: `${i}`,
content: "",
longId: `${i}`,
});
}
const table = await db.createTable("my_vectors", data);
await table.createIndex({
type: "ivf_pq",
column: "vector",
num_partitions: 16,
num_sub_vectors: 48,
});
// --8<-- [end:ingest]
// --8<-- [start:search1]
const results_1 = await table
.search(Array(1536).fill(1.2))
.limit(2)
.nprobes(20)
.refineFactor(10)
.execute();
// --8<-- [end:search1]
// --8<-- [start:search2]
const results_2 = await table
.search(Array(1536).fill(1.2))
.where("id != '1141'")
.limit(2)
.execute();
// --8<-- [end:search2]
// --8<-- [start:search3]
const results_3 = await table
.search(Array(1536).fill(1.2))
.select(["id"])
.limit(2)
.execute();
// --8<-- [end:search3]
console.log("Ann indexes: done");
})();

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@@ -11,43 +11,78 @@
## Installation
=== "Python"
```shell
pip install lancedb
```
=== "Javascript"
=== "Typescript"
```shell
npm install vectordb
```
=== "Rust"
!!! warning "Rust SDK is experimental, might introduce breaking changes in the near future"
```shell
cargo add vectordb
```
!!! info "To use the vectordb create, you first need to install protobuf."
=== "macOS"
```shell
brew install protobuf
```
=== "Ubuntu/Debian"
```shell
sudo apt install -y protobuf-compiler libssl-dev
```
!!! info "Please also make sure you're using the same version of Arrow as in the [vectordb crate](https://github.com/lancedb/lancedb/blob/main/Cargo.toml)"
## How to connect to a database
=== "Python"
```python
import lancedb
uri = "data/sample-lancedb"
db = lancedb.connect(uri)
```
LanceDB will create the directory if it doesn't exist (including parent directories).
=== "Typescript"
If you need a reminder of the uri, use the `db.uri` property.
```typescript
--8<-- "docs/src/basic_legacy.ts:import"
=== "Javascript"
```javascript
const lancedb = require("vectordb");
--8<-- "docs/src/basic_legacy.ts:open_db"
```
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
LanceDB will create the directory if it doesn't exist (including parent directories).
=== "Rust"
If you need a reminder of the uri, you can call `db.uri()`.
```rust
#[tokio::main]
async fn main() -> Result<()> {
--8<-- "rust/vectordb/examples/simple.rs:connect"
}
```
!!! info "See [examples/simple.rs](https://github.com/lancedb/lancedb/tree/main/rust/vectordb/examples/simple.rs) for a full working example."
LanceDB will create the directory if it doesn't exist (including parent directories).
If you need a reminder of the uri, you can call `db.uri()`.
## How to create a table
=== "Python"
```python
tbl = db.create_table("my_table",
data=[{"vector": [3.1, 4.1], "item": "foo", "price": 10.0},
@@ -59,6 +94,7 @@
to the `create_table` method.
You can also pass in a pandas DataFrame directly:
```python
import pandas as pd
df = pd.DataFrame([{"vector": [3.1, 4.1], "item": "foo", "price": 10.0},
@@ -66,19 +102,26 @@
tbl = db.create_table("table_from_df", data=df)
```
=== "Javascript"
```javascript
const tb = await db.createTable(
"myTable",
[{"vector": [3.1, 4.1], "item": "foo", "price": 10.0},
{"vector": [5.9, 26.5], "item": "bar", "price": 20.0}]
)
=== "Typescript"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_table"
```
If the table already exists, LanceDB will raise an error by default.
If you want to overwrite the table, you can pass in `mode="overwrite"`
to the `createTable` function.
=== "Rust"
```rust
use arrow_schema::{DataType, Schema, Field};
use arrow_array::{RecordBatch, RecordBatchIterator};
--8<-- "rust/vectordb/examples/simple.rs:create_table"
```
If the table already exists, LanceDB will raise an error by default.
!!! info "Under the hood, LanceDB is converting the input data into an Apache Arrow table and persisting it to disk in [Lance format](https://www.github.com/lancedb/lance)."
@@ -88,76 +131,145 @@ Sometimes you may not have the data to insert into the table at creation time.
In this case, you can create an empty table and specify the schema.
=== "Python"
```python
import pyarrow as pa
schema = pa.schema([pa.field("vector", pa.list_(pa.float32(), list_size=2))])
tbl = db.create_table("empty_table", schema=schema)
```
=== "Typescript"
```typescript
--8<-- "docs/src/basic_legacy.ts:create_empty_table"
```
=== "Rust"
```rust
--8<-- "rust/vectordb/examples/simple.rs:create_empty_table"
```
## How to open an existing table
Once created, you can open a table using the following code:
=== "Python"
```python
tbl = db.open_table("my_table")
```
If you forget the name of your table, you can always get a listing of all table names:
```python
tbl = db.open_table("my_table")
```
```python
print(db.table_names())
```
=== "Typescript"
```typescript
const tbl = await db.openTable("myTable");
```
=== "Rust"
```rust
--8<-- "rust/vectordb/examples/simple.rs:open_with_existing_file"
```
If you forget the name of your table, you can always get a listing of all table names:
=== "Python"
```python
print(db.table_names())
```
=== "Javascript"
```javascript
const tbl = await db.openTable("myTable");
```
If you forget the name of your table, you can always get a listing of all table names:
```javascript
console.log(await db.tableNames());
```
```javascript
console.log(await db.tableNames());
```
=== "Rust"
```rust
--8<-- "rust/vectordb/examples/simple.rs:list_names"
```
## How to add data to a table
After a table has been created, you can always add more data to it using
=== "Python"
```python
# Option 1: Add a list of dicts to a table
data = [{"vector": [1.3, 1.4], "item": "fizz", "price": 100.0},
{"vector": [9.5, 56.2], "item": "buzz", "price": 200.0}]
tbl.add(data)
```python
# Option 2: Add a pandas DataFrame to a table
df = pd.DataFrame(data)
tbl.add(data)
```
# Option 1: Add a list of dicts to a table
data = [{"vector": [1.3, 1.4], "item": "fizz", "price": 100.0},
{"vector": [9.5, 56.2], "item": "buzz", "price": 200.0}]
tbl.add(data)
=== "Javascript"
```javascript
await tbl.add([{vector: [1.3, 1.4], item: "fizz", price: 100.0},
{vector: [9.5, 56.2], item: "buzz", price: 200.0}])
```
# Option 2: Add a pandas DataFrame to a table
df = pd.DataFrame(data)
tbl.add(data)
```
=== "Typescript"
```typescript
--8<-- "docs/src/basic_legacy.ts:add"
```
=== "Rust"
```rust
--8<-- "rust/vectordb/examples/simple.rs:add"
```
## How to search for (approximate) nearest neighbors
Once you've embedded the query, you can find its nearest neighbors using the following code:
=== "Python"
```python
tbl.search([100, 100]).limit(2).to_pandas()
```
This returns a pandas DataFrame with the results.
```python
tbl.search([100, 100]).limit(2).to_pandas()
```
=== "Javascript"
```javascript
const query = await tbl.search([100, 100]).limit(2).execute();
```
This returns a pandas DataFrame with the results.
=== "Typescript"
```typescript
--8<-- "docs/src/basic_legacy.ts:search"
```
=== "Rust"
```rust
use futures::TryStreamExt;
--8<-- "rust/vectordb/examples/simple.rs:search"
```
By default, LanceDB runs a brute-force scan over dataset to find the K nearest neighbours (KNN).
For tables with more than 50K vectors, creating an ANN index is recommended to speed up search performance.
=== "Python"
```py
tbl.create_index()
```
=== "Typescript"
```{.typescript .ignore}
--8<-- "docs/src/basic_legacy.ts:create_index"
```
=== "Rust"
```rust
--8<-- "rust/vectordb/examples/simple.rs:create_index"
```
Check [Approximate Nearest Neighbor (ANN) Indexes](/ann_indices.md) section for more details.
## How to delete rows from a table
@@ -166,20 +278,27 @@ which rows to delete, provide a filter that matches on the metadata columns.
This can delete any number of rows that match the filter.
=== "Python"
```python
tbl.delete('item = "fizz"')
```
=== "Javascript"
```javascript
await tbl.delete('item = "fizz"')
```
```python
tbl.delete('item = "fizz"')
```
=== "Typescript"
```typescript
--8<-- "docs/src/basic_legacy.ts:delete"
```
=== "Rust"
```rust
--8<-- "rust/vectordb/examples/simple.rs:delete"
```
The deletion predicate is a SQL expression that supports the same expressions
as the `where()` clause on a search. They can be as simple or complex as needed.
To see what expressions are supported, see the [SQL filters](sql.md) section.
=== "Python"
Read more: [lancedb.table.Table.delete][]
@@ -193,6 +312,7 @@ To see what expressions are supported, see the [SQL filters](sql.md) section.
Use the `drop_table()` method on the database to remove a table.
=== "Python"
```python
db.drop_table("my_table")
```
@@ -201,13 +321,20 @@ Use the `drop_table()` method on the database to remove a table.
By default, if the table does not exist an exception is raised. To suppress this,
you can pass in `ignore_missing=True`.
=== "JavaScript"
```javascript
await db.dropTable('myTable')
=== "Typescript"
```typescript
--8<-- "docs/src/basic_legacy.ts:drop_table"
```
This permanently removes the table and is not recoverable, unlike deleting rows.
If the table does not exist an exception is raised.
If the table does not exist an exception is raised.
=== "Rust"
```rust
--8<-- "rust/vectordb/examples/simple.rs:drop_table"
```
!!! note "Bundling `vectordb` apps with Webpack"

92
docs/src/basic_legacy.ts Normal file
View File

@@ -0,0 +1,92 @@
// --8<-- [start:import]
import * as lancedb from "vectordb";
import { Schema, Field, Float32, FixedSizeList, Int32, Float16 } from "apache-arrow";
// --8<-- [end:import]
import * as fs from "fs";
import { Table as ArrowTable, Utf8 } from "apache-arrow";
const example = async () => {
fs.rmSync("data/sample-lancedb", { recursive: true, force: true });
// --8<-- [start:open_db]
const lancedb = require("vectordb");
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
// --8<-- [end:open_db]
// --8<-- [start:create_table]
const tbl = await db.createTable(
"myTable",
[
{ vector: [3.1, 4.1], item: "foo", price: 10.0 },
{ vector: [5.9, 26.5], item: "bar", price: 20.0 },
],
{ writeMode: lancedb.WriteMode.Overwrite }
);
// --8<-- [end:create_table]
// --8<-- [start:add]
const newData = Array.from({ length: 500 }, (_, i) => ({
vector: [i, i + 1],
item: "fizz",
price: i * 0.1,
}));
await tbl.add(newData);
// --8<-- [end:add]
// --8<-- [start:create_index]
await tbl.createIndex({
type: "ivf_pq",
num_partitions: 2,
num_sub_vectors: 2,
});
// --8<-- [end:create_index]
// --8<-- [start:create_empty_table]
const schema = new Schema([
new Field("id", new Int32()),
new Field("name", new Utf8()),
]);
const empty_tbl = await db.createTable({ name: "empty_table", schema });
// --8<-- [end:create_empty_table]
// --8<-- [start:create_f16_table]
const dim = 16
const total = 10
const f16_schema = new Schema([
new Field('id', new Int32()),
new Field(
'vector',
new FixedSizeList(dim, new Field('item', new Float16(), true)),
false
)
])
const data = lancedb.makeArrowTable(
Array.from(Array(total), (_, i) => ({
id: i,
vector: Array.from(Array(dim), Math.random)
})),
{ f16_schema }
)
const table = await db.createTable('f16_tbl', data)
// --8<-- [end:create_f16_table]
// --8<-- [start:search]
const query = await tbl.search([100, 100]).limit(2).execute();
// --8<-- [end:search]
console.log(query);
// --8<-- [start:delete]
await tbl.delete('item = "fizz"');
// --8<-- [end:delete]
// --8<-- [start:drop_table]
await db.dropTable("myTable");
// --8<-- [end:drop_table]
};
async function main() {
await example();
console.log("Basic example: done");
}
main();

View File

@@ -17,6 +17,7 @@ Let's implement `SentenceTransformerEmbeddings` class. All you need to do is imp
```python
from lancedb.embeddings import register
from lancedb.util import attempt_import_or_raise
@register("sentence-transformers")
class SentenceTransformerEmbeddings(TextEmbeddingFunction):
@@ -81,7 +82,7 @@ class OpenClipEmbeddings(EmbeddingFunction):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
open_clip = self.safe_import("open_clip", "open-clip") # EmbeddingFunction util to import external libs and raise if not found
open_clip = attempt_import_or_raise("open_clip", "open-clip") # EmbeddingFunction util to import external libs and raise if not found
model, _, preprocess = open_clip.create_model_and_transforms(
self.name, pretrained=self.pretrained
)
@@ -109,14 +110,14 @@ class OpenClipEmbeddings(EmbeddingFunction):
if isinstance(query, str):
return [self.generate_text_embeddings(query)]
else:
PIL = self.safe_import("PIL", "pillow")
PIL = attempt_import_or_raise("PIL", "pillow")
if isinstance(query, PIL.Image.Image):
return [self.generate_image_embedding(query)]
else:
raise TypeError("OpenClip supports str or PIL Image as query")
def generate_text_embeddings(self, text: str) -> np.ndarray:
torch = self.safe_import("torch")
torch = attempt_import_or_raise("torch")
text = self.sanitize_input(text)
text = self._tokenizer(text)
text.to(self.device)
@@ -175,7 +176,7 @@ class OpenClipEmbeddings(EmbeddingFunction):
The image to embed. If the image is a str, it is treated as a uri.
If the image is bytes, it is treated as the raw image bytes.
"""
torch = self.safe_import("torch")
torch = attempt_import_or_raise("torch")
# TODO handle retry and errors for https
image = self._to_pil(image)
image = self._preprocess(image).unsqueeze(0)
@@ -183,7 +184,7 @@ class OpenClipEmbeddings(EmbeddingFunction):
return self._encode_and_normalize_image(image)
def _to_pil(self, image: Union[str, bytes]):
PIL = self.safe_import("PIL", "pillow")
PIL = attempt_import_or_raise("PIL", "pillow")
if isinstance(image, bytes):
return PIL.Image.open(io.BytesIO(image))
if isinstance(image, PIL.Image.Image):

View File

@@ -9,6 +9,9 @@ Contains the text embedding functions registered by default.
### Sentence transformers
Allows you to set parameters when registering a `sentence-transformers` object.
!!! info
Sentence transformer embeddings are normalized by default. It is recommended to use normalized embeddings for similarity search.
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| `name` | `str` | `all-MiniLM-L6-v2` | The name of the model |
@@ -119,7 +122,7 @@ texts = [{"text": "Capitalism has been dominant in the Western world since the e
tbl.add(texts)
```
## Gemini Embedding Function
### Gemini Embeddings
With Google's Gemini, you can represent text (words, sentences, and blocks of text) in a vectorized form, making it easier to compare and contrast embeddings. For example, two texts that share a similar subject matter or sentiment should have similar embeddings, which can be identified through mathematical comparison techniques such as cosine similarity. For more on how and why you should use embeddings, refer to the Embeddings guide.
The Gemini Embedding Model API supports various task types:
@@ -155,6 +158,51 @@ tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
```
### AWS Bedrock Text Embedding Functions
AWS Bedrock supports multiple base models for generating text embeddings. You need to setup the AWS credentials to use this embedding function.
You can do so by using `awscli` and also add your session_token:
```shell
aws configure
aws configure set aws_session_token "<your_session_token>"
```
to ensure that the credentials are set up correctly, you can run the following command:
```shell
aws sts get-caller-identity
```
Supported Embedding modelIDs are:
* `amazon.titan-embed-text-v1`
* `cohere.embed-english-v3`
* `cohere.embed-multilingual-v3`
Supported paramters (to be passed in `create` method) are:
| Parameter | Type | Default Value | Description |
|---|---|---|---|
| **name** | str | "amazon.titan-embed-text-v1" | The model ID of the bedrock model to use. Supported base models for Text Embeddings: amazon.titan-embed-text-v1, cohere.embed-english-v3, cohere.embed-multilingual-v3 |
| **region** | str | "us-east-1" | Optional name of the AWS Region in which the service should be called (e.g., "us-east-1"). |
| **profile_name** | str | None | Optional name of the AWS profile to use for calling the Bedrock service. If not specified, the default profile will be used. |
| **assumed_role** | str | None | Optional ARN of an AWS IAM role to assume for calling the Bedrock service. If not specified, the current active credentials will be used. |
| **role_session_name** | str | "lancedb-embeddings" | Optional name of the AWS IAM role session to use for calling the Bedrock service. If not specified, a "lancedb-embeddings" name will be used. |
| **runtime** | bool | True | Optional choice of getting different client to perform operations with the Amazon Bedrock service. |
| **max_retries** | int | 7 | Optional number of retries to perform when a request fails. |
Usage Example:
```python
model = get_registry().get("bedrock-text").create()
class TextModel(LanceModel):
text: str = model.SourceField()
vector: Vector(model.ndims()) = model.VectorField()
df = pd.DataFrame({"text": ["hello world", "goodbye world"]})
db = lancedb.connect("tmp_path")
tbl = db.create_table("test", schema=TextModel, mode="overwrite")
tbl.add(df)
rs = tbl.search("hello").limit(1).to_pandas()
```
## Multi-modal embedding functions
Multi-modal embedding functions allow you to query your table using both images and text.

View File

@@ -1,141 +0,0 @@
In this workflow, you define your own embedding function and pass it as a callable to LanceDB, invoking it in your code to generate the embeddings. Let's look at some examples.
### Hugging Face
!!! note
Currently, the Hugging Face method is only supported in the Python SDK.
=== "Python"
The most popular open source option is to use the [sentence-transformers](https://www.sbert.net/)
library, which can be installed via pip.
```bash
pip install sentence-transformers
```
The example below shows how to use the `paraphrase-albert-small-v2` model to generate embeddings
for a given document.
```python
from sentence_transformers import SentenceTransformer
name="paraphrase-albert-small-v2"
model = SentenceTransformer(name)
# used for both training and querying
def embed_func(batch):
return [model.encode(sentence) for sentence in batch]
```
### OpenAI
Another popular alternative is to use an external API like OpenAI's [embeddings API](https://platform.openai.com/docs/guides/embeddings/what-are-embeddings).
=== "Python"
```python
import openai
import os
# Configuring the environment variable OPENAI_API_KEY
if "OPENAI_API_KEY" not in os.environ:
# OR set the key here as a variable
openai.api_key = "sk-..."
# verify that the API key is working
assert len(openai.Model.list()["data"]) > 0
def embed_func(c):
rs = openai.Embedding.create(input=c, engine="text-embedding-ada-002")
return [record["embedding"] for record in rs["data"]]
```
=== "JavaScript"
```javascript
const lancedb = require("vectordb");
// You need to provide an OpenAI API key
const apiKey = "sk-..."
// The embedding function will create embeddings for the 'text' column
const embedding = new lancedb.OpenAIEmbeddingFunction('text', apiKey)
```
## Applying an embedding function to data
=== "Python"
Using an embedding function, you can apply it to raw data
to generate embeddings for each record.
Say you have a pandas DataFrame with a `text` column that you want embedded,
you can use the `with_embeddings` function to generate embeddings and add them to
an existing table.
```python
import pandas as pd
from lancedb.embeddings import with_embeddings
df = pd.DataFrame(
[
{"text": "pepperoni"},
{"text": "pineapple"}
]
)
data = with_embeddings(embed_func, df)
# The output is used to create / append to a table
# db.create_table("my_table", data=data)
```
If your data is in a different column, you can specify the `column` kwarg to `with_embeddings`.
By default, LanceDB calls the function with batches of 1000 rows. This can be configured
using the `batch_size` parameter to `with_embeddings`.
LanceDB automatically wraps the function with retry and rate-limit logic to ensure the OpenAI
API call is reliable.
=== "JavaScript"
Using an embedding function, you can apply it to raw data
to generate embeddings for each record.
Simply pass the embedding function created above and LanceDB will use it to generate
embeddings for your data.
```javascript
const db = await lancedb.connect("data/sample-lancedb");
const data = [
{ text: "pepperoni"},
{ text: "pineapple"}
]
const table = await db.createTable("vectors", data, embedding)
```
## Querying using an embedding function
!!! warning
At query time, you **must** use the same embedding function you used to vectorize your data.
If you use a different embedding function, the embeddings will not reside in the same vector
space and the results will be nonsensical.
=== "Python"
```python
query = "What's the best pizza topping?"
query_vector = embed_func([query])[0]
results = (
tbl.search(query_vector)
.limit(10)
.to_pandas()
)
```
The above snippet returns a pandas DataFrame with the 10 closest vectors to the query.
=== "JavaScript"
```javascript
const results = await table
.search("What's the best pizza topping?")
.limit(10)
.execute()
```
The above snippet returns an array of records with the top 10 nearest neighbors to the query.

View File

@@ -3,61 +3,126 @@ Representing multi-modal data as vector embeddings is becoming a standard practi
For this purpose, LanceDB introduces an **embedding functions API**, that allow you simply set up once, during the configuration stage of your project. After this, the table remembers it, effectively making the embedding functions *disappear in the background* so you don't have to worry about manually passing callables, and instead, simply focus on the rest of your data engineering pipeline.
!!! warning
Using the implicit embeddings management approach means that you can forget about the manually passing around embedding
functions in your code, as long as you don't intend to change it at a later time. If your embedding function changes,
you'll have to re-configure your table with the new embedding function and regenerate the embeddings.
Using the embedding function registry means that you don't have to explicitly generate the embeddings yourself.
However, if your embedding function changes, you'll have to re-configure your table with the new embedding function
and regenerate the embeddings. In the future, we plan to support the ability to change the embedding function via
table metadata and have LanceDB automatically take care of regenerating the embeddings.
## 1. Define the embedding function
We have some pre-defined embedding functions in the global registry, with more coming soon. Here's let's an implementation of CLIP as example.
```
registry = EmbeddingFunctionRegistry.get_instance()
clip = registry.get("open-clip").create()
```
You can also define your own embedding function by implementing the `EmbeddingFunction` abstract base interface. It subclasses Pydantic Model which can be utilized to write complex schemas simply as we'll see next!
=== "Python"
In the LanceDB python SDK, we define a global embedding function registry with
many different embedding models and even more coming soon.
Here's let's an implementation of CLIP as example.
```python
from lancedb.embeddings import get_registry
registry = get_registry()
clip = registry.get("open-clip").create()
```
You can also define your own embedding function by implementing the `EmbeddingFunction`
abstract base interface. It subclasses Pydantic Model which can be utilized to write complex schemas simply as we'll see next!
=== "JavaScript""
In the TypeScript SDK, the choices are more limited. For now, only the OpenAI
embedding function is available.
```javascript
const lancedb = require("vectordb");
// You need to provide an OpenAI API key
const apiKey = "sk-..."
// The embedding function will create embeddings for the 'text' column
const embedding = new lancedb.OpenAIEmbeddingFunction('text', apiKey)
```
## 2. Define the data model or schema
The embedding function defined above abstracts away all the details about the models and dimensions required to define the schema. You can simply set a field as **source** or **vector** column. Here's how:
```python
class Pets(LanceModel):
vector: Vector(clip.ndims) = clip.VectorField()
image_uri: str = clip.SourceField()
```
=== "Python"
The embedding function defined above abstracts away all the details about the models and dimensions required to define the schema. You can simply set a field as **source** or **vector** column. Here's how:
`VectorField` tells LanceDB to use the clip embedding function to generate query embeddings for the `vector` column and `SourceField` ensures that when adding data, we automatically use the specified embedding function to encode `image_uri`.
```python
class Pets(LanceModel):
vector: Vector(clip.ndims) = clip.VectorField()
image_uri: str = clip.SourceField()
```
## 3. Create LanceDB table
Now that we have chosen/defined our embedding function and the schema, we can create the table:
`VectorField` tells LanceDB to use the clip embedding function to generate query embeddings for the `vector` column and `SourceField` ensures that when adding data, we automatically use the specified embedding function to encode `image_uri`.
```python
db = lancedb.connect("~/lancedb")
table = db.create_table("pets", schema=Pets)
=== "JavaScript"
```
For the TypeScript SDK, a schema can be inferred from input data, or an explicit
Arrow schema can be provided.
That's it! We've provided all the information needed to embed the source and query inputs. We can now forget about the model and dimension details and start to build our VectorDB pipeline.
## 3. Create table and add data
## 4. Ingest lots of data and query your table
Any new or incoming data can just be added and it'll be vectorized automatically.
Now that we have chosen/defined our embedding function and the schema,
we can create the table and ingest data without needing to explicitly generate
the embeddings at all:
```python
table.add([{"image_uri": u} for u in uris])
```
=== "Python"
```python
db = lancedb.connect("~/lancedb")
table = db.create_table("pets", schema=Pets)
Our OpenCLIP query embedding function supports querying via both text and images:
table.add([{"image_uri": u} for u in uris])
```
```python
result = table.search("dog")
```
=== "JavaScript"
Let's query an image:
```javascript
const db = await lancedb.connect("data/sample-lancedb");
const data = [
{ text: "pepperoni"},
{ text: "pineapple"}
]
```python
p = Path("path/to/images/samoyed_100.jpg")
query_image = Image.open(p)
table.search(query_image)
```
const table = await db.createTable("vectors", data, embedding)
```
## 4. Querying your table
Not only can you forget about the embeddings during ingestion, you also don't
need to worry about it when you query the table:
=== "Python"
Our OpenCLIP query embedding function supports querying via both text and images:
```python
results = (
table.search("dog")
.limit(10)
.to_pandas()
)
```
Or we can search using an image:
```python
p = Path("path/to/images/samoyed_100.jpg")
query_image = Image.open(p)
results = (
table.search(query_image)
.limit(10)
.to_pandas()
)
```
Both of the above snippet returns a pandas DataFrame with the 10 closest vectors to the query.
=== "JavaScript"
```javascript
const results = await table
.search("What's the best pizza topping?")
.limit(10)
.execute()
```
The above snippet returns an array of records with the top 10 nearest neighbors to the query.
---
@@ -100,4 +165,5 @@ rs[2].image
![](../assets/dog_clip_output.png)
Now that you have the basic idea about implicit management via embedding functions, let's dive deeper into a [custom API](./api.md) that you can use to implement your own embedding functions.
Now that you have the basic idea about LanceDB embedding functions and the embedding function registry,
let's dive deeper into defining your own [custom functions](./custom_embedding_function.md).

View File

@@ -1,8 +1,14 @@
Due to the nature of vector embeddings, they can be used to represent any kind of data, from text to images to audio. This makes them a very powerful tool for machine learning practitioners. However, there's no one-size-fits-all solution for generating embeddings - there are many different libraries and APIs (both commercial and open source) that can be used to generate embeddings from structured/unstructured data.
Due to the nature of vector embeddings, they can be used to represent any kind of data, from text to images to audio.
This makes them a very powerful tool for machine learning practitioners.
However, there's no one-size-fits-all solution for generating embeddings - there are many different libraries and APIs
(both commercial and open source) that can be used to generate embeddings from structured/unstructured data.
LanceDB supports 2 methods of vectorizing your raw data into embeddings.
LanceDB supports 3 methods of working with embeddings.
1. **Explicit**: By manually calling LanceDB's `with_embedding` function to vectorize your data via an `embed_func` of your choice
2. **Implicit**: Allow LanceDB to embed the data and queries in the background as they come in, by using the table's `EmbeddingRegistry` information
1. You can manually generate embeddings for the data and queries. This is done outside of LanceDB.
2. You can use the built-in [embedding functions](./embedding_functions.md) to embed the data and queries in the background.
3. For python users, you can define your own [custom embedding function](./custom_embedding_function.md)
that extends the default embedding functions.
See the [explicit](embedding_explicit.md) and [implicit](embedding_functions.md) embedding sections for more details.
For python users, there is also a legacy [with_embeddings API](./legacy.md).
It is retained for compatibility and will be removed in a future version.

View File

@@ -0,0 +1,99 @@
The legacy `with_embeddings` API is for Python only and is deprecated.
### Hugging Face
The most popular open source option is to use the [sentence-transformers](https://www.sbert.net/)
library, which can be installed via pip.
```bash
pip install sentence-transformers
```
The example below shows how to use the `paraphrase-albert-small-v2` model to generate embeddings
for a given document.
```python
from sentence_transformers import SentenceTransformer
name="paraphrase-albert-small-v2"
model = SentenceTransformer(name)
# used for both training and querying
def embed_func(batch):
return [model.encode(sentence) for sentence in batch]
```
### OpenAI
Another popular alternative is to use an external API like OpenAI's [embeddings API](https://platform.openai.com/docs/guides/embeddings/what-are-embeddings).
```python
import openai
import os
# Configuring the environment variable OPENAI_API_KEY
if "OPENAI_API_KEY" not in os.environ:
# OR set the key here as a variable
openai.api_key = "sk-..."
client = openai.OpenAI()
def embed_func(c):
rs = client.embeddings.create(input=c, model="text-embedding-ada-002")
return [record.embedding for record in rs["data"]]
```
## Applying an embedding function to data
Using an embedding function, you can apply it to raw data
to generate embeddings for each record.
Say you have a pandas DataFrame with a `text` column that you want embedded,
you can use the `with_embeddings` function to generate embeddings and add them to
an existing table.
```python
import pandas as pd
from lancedb.embeddings import with_embeddings
df = pd.DataFrame(
[
{"text": "pepperoni"},
{"text": "pineapple"}
]
)
data = with_embeddings(embed_func, df)
# The output is used to create / append to a table
tbl = db.create_table("my_table", data=data)
```
If your data is in a different column, you can specify the `column` kwarg to `with_embeddings`.
By default, LanceDB calls the function with batches of 1000 rows. This can be configured
using the `batch_size` parameter to `with_embeddings`.
LanceDB automatically wraps the function with retry and rate-limit logic to ensure the OpenAI
API call is reliable.
## Querying using an embedding function
!!! warning
At query time, you **must** use the same embedding function you used to vectorize your data.
If you use a different embedding function, the embeddings will not reside in the same vector
space and the results will be nonsensical.
=== "Python"
```python
query = "What's the best pizza topping?"
query_vector = embed_func([query])[0]
results = (
tbl.search(query_vector)
.limit(10)
.to_pandas()
)
```
The above snippet returns a pandas DataFrame with the 10 closest vectors to the query.

View File

@@ -1,6 +1,5 @@
import pickle
import re
import sys
import zipfile
from pathlib import Path
@@ -79,7 +78,10 @@ def qanda_langchain(query):
download_docs()
docs = store_docs()
text_splitter = RecursiveCharacterTextSplitter(chunk_size=1000, chunk_overlap=200,)
text_splitter = RecursiveCharacterTextSplitter(
chunk_size=1000,
chunk_overlap=200,
)
documents = text_splitter.split_documents(docs)
embeddings = OpenAIEmbeddings()

View File

@@ -0,0 +1,11 @@
document.addEventListener("DOMContentLoaded", function () {
var script = document.createElement("script");
script.src = "https://widget.kapa.ai/kapa-widget.bundle.js";
script.setAttribute("data-website-id", "c5881fae-cec0-490b-b45e-d83d131d4f25");
script.setAttribute("data-project-name", "LanceDB");
script.setAttribute("data-project-color", "#000000");
script.setAttribute("data-project-logo", "https://avatars.githubusercontent.com/u/108903835?s=200&v=4");
script.setAttribute("data-modal-example-questions","Help me create an IVF_PQ index,How do I do an exhaustive search?,How do I create a LanceDB table?,Can I use my own embedding function?");
script.async = true;
document.head.appendChild(script);
});

View File

@@ -69,3 +69,19 @@ MinIO supports an S3 compatible API. In order to connect to a MinIO instance, yo
- Set the envvar `AWS_ENDPOINT` to the URL of your MinIO API
- Set the envvars `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY` with your MinIO credential
- Call `lancedb.connect("s3://minio_bucket_name")`
### Where can I find benchmarks for LanceDB?
Refer to this [post](https://blog.lancedb.com/benchmarking-lancedb-92b01032874a) for recent benchmarks.
### How much data can LanceDB practically manage without effecting performance?
We target good performance on ~10-50 billion rows and ~10-30 TB of data.
### Does LanceDB support concurrent operations?
LanceDB can handle concurrent reads very well, and can scale horizontally. The main constraint is how well the [storage layer](https://lancedb.github.io/lancedb/concepts/storage/) you've chosen scales. For writes, we support concurrent writing, though too many concurrent writers can lead to failing writes as there is a limited number of times a writer retries a commit
!!! info "Multiprocessing with LanceDB"
For multiprocessing you should probably not use ```fork``` as lance is multi-threaded internally and ```fork``` and multi-thread do not work well.[Refer to this discussion](https://discuss.python.org/t/concerns-regarding-deprecation-of-fork-with-alive-threads/33555)

View File

@@ -68,6 +68,82 @@ Alternatively, if you are using AWS SSO, you can use the `AWS_PROFILE` and `AWS_
You can see a full list of environment variables [here](https://docs.rs/object_store/latest/object_store/aws/struct.AmazonS3Builder.html#method.from_env).
!!! tip "Automatic cleanup for failed writes"
LanceDB uses [multi-part uploads](https://docs.aws.amazon.com/AmazonS3/latest/userguide/mpuoverview.html) when writing data to S3 in order to maximize write speed. LanceDB will abort these uploads when it shuts down gracefully, such as when cancelled by keyboard interrupt. However, in the rare case that LanceDB crashes, it is possible that some data will be left lingering in your account. To cleanup this data, we recommend (as AWS themselves do) that you setup a lifecycle rule to delete in-progress uploads after 7 days. See the AWS guide:
**[Configuring a bucket lifecycle configuration to delete incomplete multipart uploads](https://docs.aws.amazon.com/AmazonS3/latest/userguide/mpu-abort-incomplete-mpu-lifecycle-config.html)**
#### AWS IAM Permissions
If a bucket is private, then an IAM policy must be specified to allow access to it. For many development scenarios, using broad permissions such as a PowerUser account is more than sufficient for working with LanceDB. However, in many production scenarios, you may wish to have as narrow as possible permissions.
For **read and write access**, LanceDB will need a policy such as:
```json
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:GetObject",
"s3:DeleteObject",
],
"Resource": "arn:aws:s3:::<bucket>/<prefix>/*"
},
{
"Effect": "Allow",
"Action": [
"s3:ListBucket",
"s3:GetBucketLocation"
],
"Resource": "arn:aws:s3:::<bucket>",
"Condition": {
"StringLike": {
"s3:prefix": [
"<prefix>/*"
]
}
}
}
]
}
```
For **read-only access**, LanceDB will need a policy such as:
```json
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:GetObject",
],
"Resource": "arn:aws:s3:::<bucket>/<prefix>/*"
},
{
"Effect": "Allow",
"Action": [
"s3:ListBucket",
"s3:GetBucketLocation"
],
"Resource": "arn:aws:s3:::<bucket>",
"Condition": {
"StringLike": {
"s3:prefix": [
"<prefix>/*"
]
}
}
}
]
}
```
#### S3-compatible stores
LanceDB can also connect to S3-compatible stores, such as MinIO. To do so, you must specify two environment variables: `AWS_ENDPOINT` and `AWS_DEFAULT_REGION`. `AWS_ENDPOINT` should be the URL of the S3-compatible store, and `AWS_DEFAULT_REGION` should be the region to use.

View File

@@ -16,9 +16,22 @@ This guide will show how to create tables, insert data into them, and update the
db = lancedb.connect("./.lancedb")
```
=== "Javascript"
Initialize a VectorDB connection and create a table using one of the many methods listed below.
```javascript
const lancedb = require("vectordb");
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
LanceDB allows ingesting data from various sources - `dict`, `list[dict]`, `pd.DataFrame`, `pa.Table` or a `Iterator[pa.RecordBatch]`. Let's take a look at some of the these.
### From list of tuples or dictionaries
### From list of tuples or dictionaries
=== "Python"
```python
import lancedb
@@ -32,7 +45,6 @@ This guide will show how to create tables, insert data into them, and update the
db["my_table"].head()
```
!!! info "Note"
If the table already exists, LanceDB will raise an error by default.
@@ -51,6 +63,27 @@ This guide will show how to create tables, insert data into them, and update the
db.create_table("name", data, mode="overwrite")
```
=== "Javascript"
You can create a LanceDB table in JavaScript using an array of JSON records as follows.
```javascript
const tb = await db.createTable("my_table", [{
"vector": [3.1, 4.1],
"item": "foo",
"price": 10.0
}, {
"vector": [5.9, 26.5],
"item": "bar",
"price": 20.0
}]);
```
!!! info "Note"
If the table already exists, LanceDB will raise an error by default. If you want to overwrite the table, you need to specify the `WriteMode` in the createTable function.
```javascript
const table = await con.createTable(tableName, data, { writeMode: WriteMode.Overwrite })
```
### From a Pandas DataFrame
```python
@@ -67,7 +100,9 @@ This guide will show how to create tables, insert data into them, and update the
db["my_table"].head()
```
!!! info "Note"
Data is converted to Arrow before being written to disk. For maximum control over how data is saved, either provide the PyArrow schema to convert to or else provide a PyArrow Table directly.
Data is converted to Arrow before being written to disk. For maximum control over how data is saved, either provide the PyArrow schema to convert to or else provide a PyArrow Table directly.
The **`vector`** column needs to be a [Vector](../python/pydantic.md#vector-field) (defined as [pyarrow.FixedSizeList](https://arrow.apache.org/docs/python/generated/pyarrow.list_.html)) type.
```python
custom_schema = pa.schema([
@@ -79,7 +114,7 @@ This guide will show how to create tables, insert data into them, and update the
table = db.create_table("my_table", data, schema=custom_schema)
```
### From a Polars DataFrame
### From a Polars DataFrame
LanceDB supports [Polars](https://pola.rs/), a modern, fast DataFrame library
written in Rust. Just like in Pandas, the Polars integration is enabled by PyArrow
@@ -97,26 +132,44 @@ This guide will show how to create tables, insert data into them, and update the
table = db.create_table("pl_table", data=data)
```
### From PyArrow Tables
You can also create LanceDB tables directly from PyArrow tables
### From an Arrow Table
=== "Python"
You can also create LanceDB tables directly from Arrow tables.
LanceDB supports float16 data type!
```python
table = pa.Table.from_arrays(
[
pa.array([[3.1, 4.1, 5.1, 6.1], [5.9, 26.5, 4.7, 32.8]],
pa.list_(pa.float32(), 4)),
pa.array(["foo", "bar"]),
pa.array([10.0, 20.0]),
],
["vector", "item", "price"],
)
import pyarrows as pa
import numpy as np
dim = 16
total = 2
schema = pa.schema(
[
pa.field("vector", pa.list_(pa.float16(), dim)),
pa.field("text", pa.string())
]
)
data = pa.Table.from_arrays(
[
pa.array([np.random.randn(dim).astype(np.float16) for _ in range(total)],
pa.list_(pa.float16(), dim)),
pa.array(["foo", "bar"])
],
["vector", "text"],
)
tbl = db.create_table("f16_tbl", data, schema=schema)
```
db = lancedb.connect("db")
=== "Javascript"
You can also create LanceDB tables directly from Arrow tables.
LanceDB supports Float16 data type!
tbl = db.create_table("my_table", table)
```javascript
--8<-- "docs/src/basic_legacy.ts:create_f16_table"
```
### From Pydantic Models
When you create an empty table without data, you must specify the table schema.
LanceDB supports creating tables by specifying a PyArrow schema or a specialized
Pydantic model called `LanceModel`.
@@ -261,37 +314,6 @@ This guide will show how to create tables, insert data into them, and update the
You can also use iterators of other types like Pandas DataFrame or Pylists directly in the above example.
=== "JavaScript"
Initialize a VectorDB connection and create a table using one of the many methods listed below.
```javascript
const lancedb = require("vectordb");
const uri = "data/sample-lancedb";
const db = await lancedb.connect(uri);
```
You can create a LanceDB table in JavaScript using an array of JSON records as follows.
```javascript
const tb = await db.createTable("my_table", [{
"vector": [3.1, 4.1],
"item": "foo",
"price": 10.0
}, {
"vector": [5.9, 26.5],
"item": "bar",
"price": 20.0
}]);
```
!!! info "Note"
If the table already exists, LanceDB will raise an error by default. If you want to overwrite the table, you need to specify the `WriteMode` in the createTable function.
```javascript
const table = await con.createTable(tableName, data, { writeMode: WriteMode.Overwrite })
```
## Open existing tables
=== "Python"
@@ -614,6 +636,70 @@ The `values` parameter is used to provide the new values for the columns as lite
When rows are updated, they are moved out of the index. The row will still show up in ANN queries, but the query will not be as fast as it would be if the row was in the index. If you update a large proportion of rows, consider rebuilding the index afterwards.
## Consistency
In LanceDB OSS, users can set the `read_consistency_interval` parameter on connections to achieve different levels of read consistency. This parameter determines how frequently the database synchronizes with the underlying storage system to check for updates made by other processes. If another process updates a table, the database will not see the changes until the next synchronization.
There are three possible settings for `read_consistency_interval`:
1. **Unset (default)**: The database does not check for updates to tables made by other processes. This provides the best query performance, but means that clients may not see the most up-to-date data. This setting is suitable for applications where the data does not change during the lifetime of the table reference.
2. **Zero seconds (Strong consistency)**: The database checks for updates on every read. This provides the strongest consistency guarantees, ensuring that all clients see the latest committed data. However, it has the most overhead. This setting is suitable when consistency matters more than having high QPS.
3. **Custom interval (Eventual consistency)**: The database checks for updates at a custom interval, such as every 5 seconds. This provides eventual consistency, allowing for some lag between write and read operations. Performance wise, this is a middle ground between strong consistency and no consistency check. This setting is suitable for applications where immediate consistency is not critical, but clients should see updated data eventually.
!!! tip "Consistency in LanceDB Cloud"
This is only tune-able in LanceDB OSS. In LanceDB Cloud, readers are always eventually consistent.
=== "Python"
To set strong consistency, use `timedelta(0)`:
```python
from datetime import timedelta
db = lancedb.connect("./.lancedb",. read_consistency_interval=timedelta(0))
table = db.open_table("my_table")
```
For eventual consistency, use a custom `timedelta`:
```python
from datetime import timedelta
db = lancedb.connect("./.lancedb", read_consistency_interval=timedelta(seconds=5))
table = db.open_table("my_table")
```
By default, a `Table` will never check for updates from other writers. To manually check for updates you can use `checkout_latest`:
```python
db = lancedb.connect("./.lancedb")
table = db.open_table("my_table")
# (Other writes happen to my_table from another process)
# Check for updates
table.checkout_latest()
```
=== "JavaScript/Typescript"
To set strong consistency, use `0`:
```javascript
const db = await lancedb.connect({ uri: "./.lancedb", readConsistencyInterval: 0 });
const table = await db.openTable("my_table");
```
For eventual consistency, specify the update interval as seconds:
```javascript
const db = await lancedb.connect({ uri: "./.lancedb", readConsistencyInterval: 5 });
const table = await db.openTable("my_table");
```
<!-- Node doesn't yet support the version time travel: https://github.com/lancedb/lancedb/issues/1007
Once it does, we can show manual consistency check for Node as well.
-->
## What's next?
Learn the best practices on creating an ANN index and getting the most out of it.

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@@ -0,0 +1,49 @@
# Hybrid Search
Hybrid Search is a broad (often misused) term. It can mean anything from combining multiple methods for searching, to applying ranking methods to better sort the results. In this blog, we use the definition of "hybrid search" to mean using a combination of keyword-based and vector search.
## The challenge of (re)ranking search results
Once you have a group of the most relevant search results from multiple search sources, you'd likely standardize the score and rank them accordingly. This process can also be seen as another independent step-reranking.
There are two approaches for reranking search results from multiple sources.
* <b>Score-based</b>: Calculate final relevance scores based on a weighted linear combination of individual search algorithm scores. Example-Weighted linear combination of semantic search & keyword-based search results.
* <b>Relevance-based</b>: Discards the existing scores and calculates the relevance of each search result-query pair. Example-Cross Encoder models
Even though there are many strategies for reranking search results, none works for all cases. Moreover, evaluating them itself is a challenge. Also, reranking can be dataset, application specific so it's hard to generalize.
### Example evaluation of hybrid search with Reranking
Here's some evaluation numbers from experiment comparing these re-rankers on about 800 queries. It is modified version of an evaluation script from [llama-index](https://github.com/run-llama/finetune-embedding/blob/main/evaluate.ipynb) that measures hit-rate at top-k.
<b> With OpenAI ada2 embedding </b>
Vector Search baseline - `0.64`
| Reranker | Top-3 | Top-5 | Top-10 |
| --- | --- | --- | --- |
| Linear Combination | `0.73` | `0.74` | `0.85` |
| Cross Encoder | `0.71` | `0.70` | `0.77` |
| Cohere | `0.81` | `0.81` | `0.85` |
| ColBERT | `0.68` | `0.68` | `0.73` |
<p>
<img src="https://github.com/AyushExel/assets/assets/15766192/d57b1780-ef27-414c-a5c3-73bee7808a45">
</p>
<b> With OpenAI embedding-v3-small </b>
Vector Search baseline - `0.59`
| Reranker | Top-3 | Top-5 | Top-10 |
| --- | --- | --- | --- |
| Linear Combination | `0.68` | `0.70` | `0.84` |
| Cross Encoder | `0.72` | `0.72` | `0.79` |
| Cohere | `0.79` | `0.79` | `0.84` |
| ColBERT | `0.70` | `0.70` | `0.76` |
<p>
<img src="https://github.com/AyushExel/assets/assets/15766192/259adfd2-6ec6-4df6-a77d-1456598970dd">
</p>
### Conclusion
The results show that the reranking methods are able to improve the search results. However, the improvement is not consistent across all rerankers. The choice of reranker depends on the dataset and the application. It is also important to note that the reranking methods are not a replacement for the search methods. They are complementary and should be used together to get the best results. The speed to recall tradeoff is also an important factor to consider when choosing the reranker.

View File

@@ -0,0 +1,242 @@
# Hybrid Search
LanceDB supports both semantic and keyword-based search (also termed full-text search, or FTS). In real world applications, it is often useful to combine these two approaches to get the best best results. For example, you may want to search for a document that is semantically similar to a query document, but also contains a specific keyword. This is an example of *hybrid search*, a search algorithm that combines multiple search techniques.
## Hybrid search in LanceDB
You can perform hybrid search in LanceDB by combining the results of semantic and full-text search via a reranking algorithm of your choice. LanceDB provides multiple rerankers out of the box. However, you can always write a custom reranker if your use case need more sophisticated logic .
```python
import os
import lancedb
import openai
from lancedb.embeddings import get_registry
from lancedb.pydantic import LanceModel, Vector
db = lancedb.connect("~/.lancedb")
# Ingest embedding function in LanceDB table
# Configuring the environment variable OPENAI_API_KEY
if "OPENAI_API_KEY" not in os.environ:
# OR set the key here as a variable
openai.api_key = "sk-..."
embeddings = get_registry().get("openai").create()
class Documents(LanceModel):
vector: Vector(embeddings.ndims()) = embeddings.VectorField()
text: str = embeddings.SourceField()
table = db.create_table("documents", schema=Documents)
data = [
{ "text": "rebel spaceships striking from a hidden base"},
{ "text": "have won their first victory against the evil Galactic Empire"},
{ "text": "during the battle rebel spies managed to steal secret plans"},
{ "text": "to the Empire's ultimate weapon the Death Star"}
]
# ingest docs with auto-vectorization
table.add(data)
# Create a fts index before the hybrid search
table.create_fts_index("text")
# hybrid search with default re-ranker
results = table.search("flower moon", query_type="hybrid").to_pandas()
```
By default, LanceDB uses `LinearCombinationReranker(weight=0.7)` to combine and rerank the results of semantic and full-text search. You can customize the hyperparameters as needed or write your own custom reranker. Here's how you can use any of the available rerankers:
### `rerank()` arguments
* `normalize`: `str`, default `"score"`:
The method to normalize the scores. Can be "rank" or "score". If "rank", the scores are converted to ranks and then normalized. If "score", the scores are normalized directly.
* `reranker`: `Reranker`, default `LinearCombinationReranker(weight=0.7)`.
The reranker to use. If not specified, the default reranker is used.
## Available Rerankers
LanceDB provides a number of re-rankers out of the box. You can use any of these re-rankers by passing them to the `rerank()` method. Here's a list of available re-rankers:
### Linear Combination Reranker
This is the default re-ranker used by LanceDB. It combines the results of semantic and full-text search using a linear combination of the scores. The weights for the linear combination can be specified. It defaults to 0.7, i.e, 70% weight for semantic search and 30% weight for full-text search.
```python
from lancedb.rerankers import LinearCombinationReranker
reranker = LinearCombinationReranker(weight=0.3) # Use 0.3 as the weight for vector search
results = table.search("rebel", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `weight`: `float`, default `0.7`:
The weight to use for the semantic search score. The weight for the full-text search score is `1 - weights`.
* `fill`: `float`, default `1.0`:
The score to give to results that are only in one of the two result sets.This is treated as penalty, so a higher value means a lower score.
TODO: We should just hardcode this-- its pretty confusing as we invert scores to calculate final score
* `return_score` : str, default `"relevance"`
options are "relevance" or "all"
The type of score to return. If "relevance", will return only the `_relevance_score. If "all", will return all scores from the vector and FTS search along with the relevance score.
### Cohere Reranker
This re-ranker uses the [Cohere](https://cohere.ai/) API to combine the results of semantic and full-text search. You can use this re-ranker by passing `CohereReranker()` to the `rerank()` method. Note that you'll need to set the `COHERE_API_KEY` environment variable to use this re-ranker.
```python
from lancedb.rerankers import CohereReranker
reranker = CohereReranker()
results = table.search("vampire weekend", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `model_name` : str, default `"rerank-english-v2.0"`
The name of the cross encoder model to use. Available cohere models are:
- rerank-english-v2.0
- rerank-multilingual-v2.0
* `column` : str, default `"text"`
The name of the column to use as input to the cross encoder model.
* `top_n` : str, default `None`
The number of results to return. If None, will return all results.
!!! Note
Only returns `_relevance_score`. Does not support `return_score = "all"`.
### Cross Encoder Reranker
This reranker uses the [Sentence Transformers](https://www.sbert.net/) library to combine the results of semantic and full-text search. You can use it by passing `CrossEncoderReranker()` to the `rerank()` method.
```python
from lancedb.rerankers import CrossEncoderReranker
reranker = CrossEncoderReranker()
results = table.search("harmony hall", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `model` : str, default `"cross-encoder/ms-marco-TinyBERT-L-6"`
The name of the cross encoder model to use. Available cross encoder models can be found [here](https://www.sbert.net/docs/pretrained_cross-encoders.html)
* `column` : str, default `"text"`
The name of the column to use as input to the cross encoder model.
* `device` : str, default `None`
The device to use for the cross encoder model. If None, will use "cuda" if available, otherwise "cpu".
!!! Note
Only returns `_relevance_score`. Does not support `return_score = "all"`.
### ColBERT Reranker
This reranker uses the ColBERT model to combine the results of semantic and full-text search. You can use it by passing `ColbertrReranker()` to the `rerank()` method.
ColBERT reranker model calculates relevance of given docs against the query and don't take existing fts and vector search scores into account, so it currently only supports `return_score="relevance"`. By default, it looks for `text` column to rerank the results. But you can specify the column name to use as input to the cross encoder model as described below.
```python
from lancedb.rerankers import ColbertReranker
reranker = ColbertReranker()
results = table.search("harmony hall", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `model_name` : `str`, default `"colbert-ir/colbertv2.0"`
The name of the cross encoder model to use.
* `column` : `str`, default `"text"`
The name of the column to use as input to the cross encoder model.
* `return_score` : `str`, default `"relevance"`
options are `"relevance"` or `"all"`. Only `"relevance"` is supported for now.
!!! Note
Only returns `_relevance_score`. Does not support `return_score = "all"`.
### OpenAI Reranker
This reranker uses the OpenAI API to combine the results of semantic and full-text search. You can use it by passing `OpenaiReranker()` to the `rerank()` method.
!!! Note
This prompts chat model to rerank results which is not a dedicated reranker model. This should be treated as experimental.
!!! Tip
- You might run out of token limit so set the search `limits` based on your token limit.
- It is recommended to use gpt-4-turbo-preview, the default model, older models might lead to undesired behaviour
```python
from lancedb.rerankers import OpenaiReranker
reranker = OpenaiReranker()
results = table.search("harmony hall", query_type="hybrid").rerank(reranker=reranker).to_pandas()
```
### Arguments
----------------
* `model_name` : `str`, default `"gpt-4-turbo-preview"`
The name of the cross encoder model to use.
* `column` : `str`, default `"text"`
The name of the column to use as input to the cross encoder model.
* `return_score` : `str`, default `"relevance"`
options are "relevance" or "all". Only "relevance" is supported for now.
* `api_key` : `str`, default `None`
The API key to use. If None, will use the OPENAI_API_KEY environment variable.
## Building Custom Rerankers
You can build your own custom reranker by subclassing the `Reranker` class and implementing the `rerank_hybrid()` method. Here's an example of a custom reranker that combines the results of semantic and full-text search using a linear combination of the scores.
The `Reranker` base interface comes with a `merge_results()` method that can be used to combine the results of semantic and full-text search. This is a vanilla merging algorithm that simply concatenates the results and removes the duplicates without taking the scores into consideration. It only keeps the first copy of the row encountered. This works well in cases that don't require the scores of semantic and full-text search to combine the results. If you want to use the scores or want to support `return_score="all"`, you'll need to implement your own merging algorithm.
```python
from lancedb.rerankers import Reranker
import pyarrow as pa
class MyReranker(Reranker):
def __init__(self, param1, param2, ..., return_score="relevance"):
super().__init__(return_score)
self.param1 = param1
self.param2 = param2
def rerank_hybrid(self, query: str, vector_results: pa.Table, fts_results: pa.Table):
# Use the built-in merging function
combined_result = self.merge_results(vector_results, fts_results)
# Do something with the combined results
# ...
# Return the combined results
return combined_result
```
### Example of a Custom Reranker
For the sake of simplicity let's build custom reranker that just enchances the Cohere Reranker by accepting a filter query, and accept other CohereReranker params as kwags.
```python
from typing import List, Union
import pandas as pd
from lancedb.rerankers import CohereReranker
class MofidifiedCohereReranker(CohereReranker):
def __init__(self, filters: Union[str, List[str]], **kwargs):
super().__init__(**kwargs)
filters = filters if isinstance(filters, list) else [filters]
self.filters = filters
def rerank_hybrid(self, query: str, vector_results: pa.Table, fts_results: pa.Table)-> pa.Table:
combined_result = super().rerank_hybrid(query, vector_results, fts_results)
df = combined_result.to_pandas()
for filter in self.filters:
df = df.query("not text.str.contains(@filter)")
return pa.Table.from_pandas(df)
```
!!! tip
The `vector_results` and `fts_results` are pyarrow tables. You can convert them to pandas dataframes using `to_pandas()` method and perform any operations you want. After you are done, you can convert the dataframe back to pyarrow table using `pa.Table.from_pandas()` method and return it.

View File

@@ -1,62 +0,0 @@
# Javascript API Reference
This section contains the API reference for LanceDB Javascript API.
## Installation
```bash
npm install vectordb
```
This will download the appropriate native library for your platform. We currently
support:
* Linux (x86_64 and aarch64)
* MacOS (Intel and ARM/M1/M2)
* Windows (x86_64 only)
We do not yet support musl-based Linux (such as Alpine Linux) or arch64 Windows.
## Usage
### Basic Example
Connect to a local directory
```javascript
const lancedb = require('vectordb');
//connect to a local database
const db = await lancedb.connect('data/sample-lancedb');
```
Connect to LancdDB cloud
```javascript
connect to LanceDB Cloud
const db = await lancedb.connect({
uri: "db://my-database",
apiKey: "sk_...",
region: "us-east-1"
});
```
Create a table followed by a search
```javascript
const table = await db.createTable("my_table",
[{ id: 1, vector: [0.1, 1.0], item: "foo", price: 10.0 },
{ id: 2, vector: [3.9, 0.5], item: "bar", price: 20.0 }])
const results = await table.search([0.1, 0.3]).limit(20).execute();
console.log(results);
```
The [examples](./examples) folder contains complete examples.
## Table of contents
### Connection
Connect to a LanceDB database.
- [Connection](interfaces/Connection.md)
### Table
A Table is a collection of Records in a LanceDB Database.
- [Table](interfaces/Table.md)
### Query
The LanceDB Query
- [Query](classes/Query.md)

View File

@@ -38,4 +38,4 @@ A [WriteMode](../enums/WriteMode.md) to use on this operation
#### Defined in
[index.ts:1070](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1070)
[index.ts:1019](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1019)

View File

@@ -46,7 +46,7 @@ A connection to a LanceDB database.
#### Defined in
[index.ts:496](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L496)
[index.ts:489](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L489)
## Properties
@@ -56,7 +56,7 @@ A connection to a LanceDB database.
#### Defined in
[index.ts:494](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L494)
[index.ts:487](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L487)
___
@@ -74,7 +74,7 @@ ___
#### Defined in
[index.ts:493](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L493)
[index.ts:486](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L486)
## Accessors
@@ -92,7 +92,7 @@ ___
#### Defined in
[index.ts:501](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L501)
[index.ts:494](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L494)
## Methods
@@ -113,7 +113,7 @@ Creates a new Table, optionally initializing it with new data.
| Name | Type |
| :------ | :------ |
| `name` | `string` \| [`CreateTableOptions`](../interfaces/CreateTableOptions.md)\<`T`\> |
| `data?` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] |
| `data?` | `Record`\<`string`, `unknown`\>[] |
| `optsOrEmbedding?` | [`WriteOptions`](../interfaces/WriteOptions.md) \| [`EmbeddingFunction`](../interfaces/EmbeddingFunction.md)\<`T`\> |
| `opt?` | [`WriteOptions`](../interfaces/WriteOptions.md) |
@@ -127,7 +127,7 @@ Creates a new Table, optionally initializing it with new data.
#### Defined in
[index.ts:549](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L549)
[index.ts:542](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L542)
___
@@ -158,7 +158,7 @@ ___
#### Defined in
[index.ts:583](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L583)
[index.ts:576](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L576)
___
@@ -184,7 +184,7 @@ Drop an existing table.
#### Defined in
[index.ts:637](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L637)
[index.ts:630](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L630)
___
@@ -210,7 +210,7 @@ Open a table in the database.
#### Defined in
[index.ts:517](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L517)
[index.ts:510](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L510)
**openTable**\<`T`\>(`name`, `embeddings`): `Promise`\<[`Table`](../interfaces/Table.md)\<`T`\>\>
@@ -239,7 +239,7 @@ Connection.openTable
#### Defined in
[index.ts:525](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L525)
[index.ts:518](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L518)
**openTable**\<`T`\>(`name`, `embeddings?`): `Promise`\<[`Table`](../interfaces/Table.md)\<`T`\>\>
@@ -266,7 +266,7 @@ Connection.openTable
#### Defined in
[index.ts:529](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L529)
[index.ts:522](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L522)
___
@@ -286,4 +286,4 @@ Get the names of all tables in the database.
#### Defined in
[index.ts:508](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L508)
[index.ts:501](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L501)

View File

@@ -74,7 +74,7 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
#### Defined in
[index.ts:649](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L649)
[index.ts:642](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L642)
**new LocalTable**\<`T`\>(`tbl`, `name`, `options`, `embeddings`)
@@ -95,7 +95,7 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
#### Defined in
[index.ts:656](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L656)
[index.ts:649](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L649)
## Properties
@@ -105,7 +105,7 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
#### Defined in
[index.ts:646](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L646)
[index.ts:639](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L639)
___
@@ -115,7 +115,7 @@ ___
#### Defined in
[index.ts:645](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L645)
[index.ts:638](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L638)
___
@@ -125,7 +125,7 @@ ___
#### Defined in
[index.ts:644](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L644)
[index.ts:637](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L637)
___
@@ -143,7 +143,7 @@ ___
#### Defined in
[index.ts:647](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L647)
[index.ts:640](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L640)
___
@@ -153,7 +153,7 @@ ___
#### Defined in
[index.ts:643](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L643)
[index.ts:636](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L636)
___
@@ -179,7 +179,7 @@ Creates a filter query to find all rows matching the specified criteria
#### Defined in
[index.ts:695](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L695)
[index.ts:688](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L688)
## Accessors
@@ -197,7 +197,7 @@ Creates a filter query to find all rows matching the specified criteria
#### Defined in
[index.ts:675](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L675)
[index.ts:668](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L668)
___
@@ -215,7 +215,7 @@ ___
#### Defined in
[index.ts:875](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L875)
[index.ts:849](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L849)
## Methods
@@ -229,7 +229,7 @@ Insert records into this Table.
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
| `data` | `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
#### Returns
@@ -243,7 +243,7 @@ The number of rows added to the table
#### Defined in
[index.ts:703](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L703)
[index.ts:696](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L696)
___
@@ -257,7 +257,7 @@ ___
#### Defined in
[index.ts:887](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L887)
[index.ts:861](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L861)
___
@@ -267,8 +267,6 @@ ___
Clean up old versions of the table, freeing disk space.
Note: this API is not yet available on LanceDB Cloud
#### Parameters
| Name | Type | Description |
@@ -282,7 +280,7 @@ Note: this API is not yet available on LanceDB Cloud
#### Defined in
[index.ts:833](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L833)
[index.ts:808](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L808)
___
@@ -295,8 +293,6 @@ Run the compaction process on the table.
This can be run after making several small appends to optimize the table
for faster reads.
Note: this API is not yet available on LanceDB Cloud
#### Parameters
| Name | Type | Description |
@@ -311,7 +307,7 @@ Metrics about the compaction operation.
#### Defined in
[index.ts:857](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L857)
[index.ts:831](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L831)
___
@@ -331,7 +327,7 @@ Returns the number of rows in this table.
#### Defined in
[index.ts:773](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L773)
[index.ts:749](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L749)
___
@@ -361,7 +357,7 @@ VectorIndexParams.
#### Defined in
[index.ts:758](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L758)
[index.ts:734](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L734)
___
@@ -396,7 +392,7 @@ await table.createScalarIndex('my_col')
#### Defined in
[index.ts:766](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L766)
[index.ts:742](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L742)
___
@@ -422,7 +418,7 @@ Delete rows from this table.
#### Defined in
[index.ts:782](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L782)
[index.ts:758](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L758)
___
@@ -444,7 +440,7 @@ Creates a filter query to find all rows matching the specified criteria
#### Defined in
[index.ts:691](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L691)
[index.ts:684](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L684)
___
@@ -458,7 +454,7 @@ ___
#### Defined in
[index.ts:880](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L880)
[index.ts:854](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L854)
___
@@ -484,7 +480,7 @@ Get statistics about an index.
#### Defined in
[index.ts:871](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L871)
[index.ts:845](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L845)
___
@@ -504,7 +500,7 @@ List the indicies on this table.
#### Defined in
[index.ts:867](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L867)
[index.ts:841](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L841)
___
@@ -518,7 +514,7 @@ Insert records into this Table, replacing its contents.
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table Type Table is ArrowTable |
| `data` | `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
#### Returns
@@ -532,7 +528,7 @@ The number of rows added to the table
#### Defined in
[index.ts:732](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L732)
[index.ts:716](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L716)
___
@@ -558,7 +554,7 @@ Creates a search query to find the nearest neighbors of the given search term
#### Defined in
[index.ts:683](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L683)
[index.ts:676](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L676)
___
@@ -584,4 +580,4 @@ Update rows in this table.
#### Defined in
[index.ts:795](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L795)
[index.ts:771](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L771)

View File

@@ -1,56 +0,0 @@
[vectordb](../README.md) / [Exports](../modules.md) / MakeArrowTableOptions
# Class: MakeArrowTableOptions
Options to control the makeArrowTable call.
## Table of contents
### Constructors
- [constructor](MakeArrowTableOptions.md#constructor)
### Properties
- [schema](MakeArrowTableOptions.md#schema)
- [vectorColumns](MakeArrowTableOptions.md#vectorcolumns)
## Constructors
### constructor
**new MakeArrowTableOptions**(`values?`)
#### Parameters
| Name | Type |
| :------ | :------ |
| `values?` | `Partial`\<[`MakeArrowTableOptions`](MakeArrowTableOptions.md)\> |
#### Defined in
[arrow.ts:56](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/arrow.ts#L56)
## Properties
### schema
`Optional` **schema**: `Schema`\<`any`\>
Provided schema.
#### Defined in
[arrow.ts:49](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/arrow.ts#L49)
___
### vectorColumns
**vectorColumns**: `Record`\<`string`, `VectorColumnOptions`\>
Vector columns
#### Defined in
[arrow.ts:52](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/arrow.ts#L52)

View File

@@ -40,7 +40,7 @@ An embedding function that automatically creates vector representation for a giv
#### Defined in
[embedding/openai.ts:22](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/embedding/openai.ts#L22)
[embedding/openai.ts:21](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L21)
## Properties
@@ -50,17 +50,17 @@ An embedding function that automatically creates vector representation for a giv
#### Defined in
[embedding/openai.ts:20](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/embedding/openai.ts#L20)
[embedding/openai.ts:19](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L19)
___
### \_openai
`Private` `Readonly` **\_openai**: `OpenAI`
`Private` `Readonly` **\_openai**: `any`
#### Defined in
[embedding/openai.ts:19](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/embedding/openai.ts#L19)
[embedding/openai.ts:18](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L18)
___
@@ -76,7 +76,7 @@ The name of the column that will be used as input for the Embedding Function.
#### Defined in
[embedding/openai.ts:56](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/embedding/openai.ts#L56)
[embedding/openai.ts:50](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L50)
## Methods
@@ -102,4 +102,4 @@ Creates a vector representation for the given values.
#### Defined in
[embedding/openai.ts:43](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/embedding/openai.ts#L43)
[embedding/openai.ts:38](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/openai.ts#L38)

View File

@@ -65,7 +65,7 @@ A builder for nearest neighbor queries for LanceDB.
#### Defined in
[query.ts:38](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L38)
[query.ts:38](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L38)
## Properties
@@ -75,7 +75,7 @@ A builder for nearest neighbor queries for LanceDB.
#### Defined in
[query.ts:36](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L36)
[query.ts:36](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L36)
___
@@ -85,7 +85,7 @@ ___
#### Defined in
[query.ts:33](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L33)
[query.ts:33](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L33)
___
@@ -95,7 +95,7 @@ ___
#### Defined in
[query.ts:29](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L29)
[query.ts:29](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L29)
___
@@ -105,7 +105,7 @@ ___
#### Defined in
[query.ts:34](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L34)
[query.ts:34](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L34)
___
@@ -115,7 +115,7 @@ ___
#### Defined in
[query.ts:31](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L31)
[query.ts:31](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L31)
___
@@ -125,7 +125,7 @@ ___
#### Defined in
[query.ts:35](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L35)
[query.ts:35](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L35)
___
@@ -135,7 +135,7 @@ ___
#### Defined in
[query.ts:26](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L26)
[query.ts:26](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L26)
___
@@ -145,7 +145,7 @@ ___
#### Defined in
[query.ts:28](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L28)
[query.ts:28](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L28)
___
@@ -155,7 +155,7 @@ ___
#### Defined in
[query.ts:30](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L30)
[query.ts:30](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L30)
___
@@ -165,7 +165,7 @@ ___
#### Defined in
[query.ts:32](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L32)
[query.ts:32](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L32)
___
@@ -175,7 +175,7 @@ ___
#### Defined in
[query.ts:27](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L27)
[query.ts:27](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L27)
___
@@ -201,7 +201,7 @@ A filter statement to be applied to this query.
#### Defined in
[query.ts:87](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L87)
[query.ts:87](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L87)
## Methods
@@ -223,7 +223,7 @@ Execute the query and return the results as an Array of Objects
#### Defined in
[query.ts:115](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L115)
[query.ts:115](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L115)
___
@@ -245,7 +245,7 @@ A filter statement to be applied to this query.
#### Defined in
[query.ts:82](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L82)
[query.ts:82](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L82)
___
@@ -259,7 +259,7 @@ ___
#### Defined in
[query.ts:143](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L143)
[query.ts:142](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L142)
___
@@ -281,7 +281,7 @@ Sets the number of results that will be returned
#### Defined in
[query.ts:55](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L55)
[query.ts:55](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L55)
___
@@ -307,7 +307,7 @@ MetricType for the different options
#### Defined in
[query.ts:102](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L102)
[query.ts:102](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L102)
___
@@ -329,7 +329,7 @@ The number of probes used. A higher number makes search more accurate but also s
#### Defined in
[query.ts:73](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L73)
[query.ts:73](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L73)
___
@@ -349,7 +349,7 @@ ___
#### Defined in
[query.ts:107](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L107)
[query.ts:107](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L107)
___
@@ -371,7 +371,7 @@ Refine the results by reading extra elements and re-ranking them in memory.
#### Defined in
[query.ts:64](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L64)
[query.ts:64](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L64)
___
@@ -393,4 +393,4 @@ Return only the specified columns.
#### Defined in
[query.ts:93](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/query.ts#L93)
[query.ts:93](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/query.ts#L93)

View File

@@ -1,224 +0,0 @@
[vectordb](../README.md) / [Exports](../modules.md) / RemoteConnection
# Class: RemoteConnection
Remote connection.
## Implements
- [`Connection`](../interfaces/Connection.md)
## Table of contents
### Constructors
- [constructor](RemoteConnection.md#constructor)
### Properties
- [\_client](RemoteConnection.md#_client)
- [\_dbName](RemoteConnection.md#_dbname)
### Accessors
- [uri](RemoteConnection.md#uri)
### Methods
- [createTable](RemoteConnection.md#createtable)
- [dropTable](RemoteConnection.md#droptable)
- [openTable](RemoteConnection.md#opentable)
- [tableNames](RemoteConnection.md#tablenames)
## Constructors
### constructor
**new RemoteConnection**(`opts`)
#### Parameters
| Name | Type |
| :------ | :------ |
| `opts` | [`ConnectionOptions`](../interfaces/ConnectionOptions.md) |
#### Defined in
[remote/index.ts:48](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L48)
## Properties
### \_client
`Private` `Readonly` **\_client**: `HttpLancedbClient`
#### Defined in
[remote/index.ts:45](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L45)
___
### \_dbName
`Private` `Readonly` **\_dbName**: `string`
#### Defined in
[remote/index.ts:46](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L46)
## Accessors
### uri
`get` **uri**(): `string`
#### Returns
`string`
#### Implementation of
[Connection](../interfaces/Connection.md).[uri](../interfaces/Connection.md#uri)
#### Defined in
[remote/index.ts:75](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L75)
## Methods
### createTable
**createTable**\<`T`\>(`nameOrOpts`, `data?`, `optsOrEmbedding?`, `opt?`): `Promise`\<[`Table`](../interfaces/Table.md)\<`T`\>\>
Creates a new Table, optionally initializing it with new data.
#### Type parameters
| Name |
| :------ |
| `T` |
#### Parameters
| Name | Type |
| :------ | :------ |
| `nameOrOpts` | `string` \| [`CreateTableOptions`](../interfaces/CreateTableOptions.md)\<`T`\> |
| `data?` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] |
| `optsOrEmbedding?` | [`WriteOptions`](../interfaces/WriteOptions.md) \| [`EmbeddingFunction`](../interfaces/EmbeddingFunction.md)\<`T`\> |
| `opt?` | [`WriteOptions`](../interfaces/WriteOptions.md) |
#### Returns
`Promise`\<[`Table`](../interfaces/Table.md)\<`T`\>\>
#### Implementation of
[Connection](../interfaces/Connection.md).[createTable](../interfaces/Connection.md#createtable)
#### Defined in
[remote/index.ts:107](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L107)
___
### dropTable
**dropTable**(`name`): `Promise`\<`void`\>
Drop an existing table.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table to drop. |
#### Returns
`Promise`\<`void`\>
#### Implementation of
[Connection](../interfaces/Connection.md).[dropTable](../interfaces/Connection.md#droptable)
#### Defined in
[remote/index.ts:175](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L175)
___
### openTable
**openTable**(`name`): `Promise`\<[`Table`](../interfaces/Table.md)\<`number`[]\>\>
Open a table in the database.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
#### Returns
`Promise`\<[`Table`](../interfaces/Table.md)\<`number`[]\>\>
#### Implementation of
[Connection](../interfaces/Connection.md).[openTable](../interfaces/Connection.md#opentable)
#### Defined in
[remote/index.ts:91](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L91)
**openTable**\<`T`\>(`name`, `embeddings`): `Promise`\<[`Table`](../interfaces/Table.md)\<`T`\>\>
#### Type parameters
| Name |
| :------ |
| `T` |
#### Parameters
| Name | Type |
| :------ | :------ |
| `name` | `string` |
| `embeddings` | [`EmbeddingFunction`](../interfaces/EmbeddingFunction.md)\<`T`\> |
#### Returns
`Promise`\<[`Table`](../interfaces/Table.md)\<`T`\>\>
#### Implementation of
Connection.openTable
#### Defined in
[remote/index.ts:92](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L92)
___
### tableNames
**tableNames**(`pageToken?`, `limit?`): `Promise`\<`string`[]\>
#### Parameters
| Name | Type | Default value |
| :------ | :------ | :------ |
| `pageToken` | `string` | `''` |
| `limit` | `number` | `10` |
#### Returns
`Promise`\<`string`[]\>
#### Implementation of
[Connection](../interfaces/Connection.md).[tableNames](../interfaces/Connection.md#tablenames)
#### Defined in
[remote/index.ts:80](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L80)

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@@ -1,470 +0,0 @@
[vectordb](../README.md) / [Exports](../modules.md) / RemoteTable
# Class: RemoteTable\<T\>
A LanceDB Table is the collection of Records. Each Record has one or more vector fields.
## Type parameters
| Name | Type |
| :------ | :------ |
| `T` | `number`[] |
## Implements
- [`Table`](../interfaces/Table.md)\<`T`\>
## Table of contents
### Constructors
- [constructor](RemoteTable.md#constructor)
### Properties
- [\_client](RemoteTable.md#_client)
- [\_embeddings](RemoteTable.md#_embeddings)
- [\_name](RemoteTable.md#_name)
### Accessors
- [name](RemoteTable.md#name)
- [schema](RemoteTable.md#schema)
### Methods
- [add](RemoteTable.md#add)
- [countRows](RemoteTable.md#countrows)
- [createIndex](RemoteTable.md#createindex)
- [createScalarIndex](RemoteTable.md#createscalarindex)
- [delete](RemoteTable.md#delete)
- [indexStats](RemoteTable.md#indexstats)
- [listIndices](RemoteTable.md#listindices)
- [overwrite](RemoteTable.md#overwrite)
- [search](RemoteTable.md#search)
- [update](RemoteTable.md#update)
## Constructors
### constructor
**new RemoteTable**\<`T`\>(`client`, `name`)
#### Type parameters
| Name | Type |
| :------ | :------ |
| `T` | `number`[] |
#### Parameters
| Name | Type |
| :------ | :------ |
| `client` | `HttpLancedbClient` |
| `name` | `string` |
#### Defined in
[remote/index.ts:234](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L234)
**new RemoteTable**\<`T`\>(`client`, `name`, `embeddings`)
#### Type parameters
| Name | Type |
| :------ | :------ |
| `T` | `number`[] |
#### Parameters
| Name | Type |
| :------ | :------ |
| `client` | `HttpLancedbClient` |
| `name` | `string` |
| `embeddings` | [`EmbeddingFunction`](../interfaces/EmbeddingFunction.md)\<`T`\> |
#### Defined in
[remote/index.ts:235](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L235)
## Properties
### \_client
`Private` `Readonly` **\_client**: `HttpLancedbClient`
#### Defined in
[remote/index.ts:230](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L230)
___
### \_embeddings
`Private` `Optional` `Readonly` **\_embeddings**: [`EmbeddingFunction`](../interfaces/EmbeddingFunction.md)\<`T`\>
#### Defined in
[remote/index.ts:231](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L231)
___
### \_name
`Private` `Readonly` **\_name**: `string`
#### Defined in
[remote/index.ts:232](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L232)
## Accessors
### name
`get` **name**(): `string`
#### Returns
`string`
#### Implementation of
[Table](../interfaces/Table.md).[name](../interfaces/Table.md#name)
#### Defined in
[remote/index.ts:250](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L250)
___
### schema
`get` **schema**(): `Promise`\<`any`\>
#### Returns
`Promise`\<`any`\>
#### Implementation of
[Table](../interfaces/Table.md).[schema](../interfaces/Table.md#schema)
#### Defined in
[remote/index.ts:254](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L254)
## Methods
### add
**add**(`data`): `Promise`\<`number`\>
Insert records into this Table.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
#### Returns
`Promise`\<`number`\>
The number of rows added to the table
#### Implementation of
[Table](../interfaces/Table.md).[add](../interfaces/Table.md#add)
#### Defined in
[remote/index.ts:273](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L273)
___
### countRows
**countRows**(): `Promise`\<`number`\>
Returns the number of rows in this table.
#### Returns
`Promise`\<`number`\>
#### Implementation of
[Table](../interfaces/Table.md).[countRows](../interfaces/Table.md#countrows)
#### Defined in
[remote/index.ts:372](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L372)
___
### createIndex
**createIndex**(`indexParams`): `Promise`\<`void`\>
Create an ANN index on this Table vector index.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `indexParams` | [`IvfPQIndexConfig`](../interfaces/IvfPQIndexConfig.md) | The parameters of this Index, |
#### Returns
`Promise`\<`void`\>
**`See`**
VectorIndexParams.
#### Implementation of
[Table](../interfaces/Table.md).[createIndex](../interfaces/Table.md#createindex)
#### Defined in
[remote/index.ts:326](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L326)
___
### createScalarIndex
**createScalarIndex**(`column`, `replace`): `Promise`\<`void`\>
Create a scalar index on this Table for the given column
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `column` | `string` | The column to index |
| `replace` | `boolean` | If false, fail if an index already exists on the column Scalar indices, like vector indices, can be used to speed up scans. A scalar index can speed up scans that contain filter expressions on the indexed column. For example, the following scan will be faster if the column `my_col` has a scalar index: ```ts const con = await lancedb.connect('./.lancedb'); const table = await con.openTable('images'); const results = await table.where('my_col = 7').execute(); ``` Scalar indices can also speed up scans containing a vector search and a prefilter: ```ts const con = await lancedb.connect('././lancedb'); const table = await con.openTable('images'); const results = await table.search([1.0, 2.0]).where('my_col != 7').prefilter(true); ``` Scalar indices can only speed up scans for basic filters using equality, comparison, range (e.g. `my_col BETWEEN 0 AND 100`), and set membership (e.g. `my_col IN (0, 1, 2)`) Scalar indices can be used if the filter contains multiple indexed columns and the filter criteria are AND'd or OR'd together (e.g. `my_col < 0 AND other_col> 100`) Scalar indices may be used if the filter contains non-indexed columns but, depending on the structure of the filter, they may not be usable. For example, if the column `not_indexed` does not have a scalar index then the filter `my_col = 0 OR not_indexed = 1` will not be able to use any scalar index on `my_col`. |
#### Returns
`Promise`\<`void`\>
**`Examples`**
```ts
const con = await lancedb.connect('././lancedb')
const table = await con.openTable('images')
await table.createScalarIndex('my_col')
```
#### Implementation of
[Table](../interfaces/Table.md).[createScalarIndex](../interfaces/Table.md#createscalarindex)
#### Defined in
[remote/index.ts:368](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L368)
___
### delete
▸ **delete**(`filter`): `Promise`\<`void`\>
Delete rows from this table.
This can be used to delete a single row, many rows, all rows, or
sometimes no rows (if your predicate matches nothing).
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `filter` | `string` | A filter in the same format used by a sql WHERE clause. The filter must not be empty. |
#### Returns
`Promise`\<`void`\>
**`Examples`**
```ts
const con = await lancedb.connect("./.lancedb")
const data = [
{id: 1, vector: [1, 2]},
{id: 2, vector: [3, 4]},
{id: 3, vector: [5, 6]},
];
const tbl = await con.createTable("my_table", data)
await tbl.delete("id = 2")
await tbl.countRows() // Returns 2
```
If you have a list of values to delete, you can combine them into a
stringified list and use the `IN` operator:
```ts
const to_remove = [1, 5];
await tbl.delete(`id IN (${to_remove.join(",")})`)
await tbl.countRows() // Returns 1
```
#### Implementation of
[Table](../interfaces/Table.md).[delete](../interfaces/Table.md#delete)
#### Defined in
[remote/index.ts:377](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L377)
___
### indexStats
▸ **indexStats**(`indexUuid`): `Promise`\<[`IndexStats`](../interfaces/IndexStats.md)\>
Get statistics about an index.
#### Parameters
| Name | Type |
| :------ | :------ |
| `indexUuid` | `string` |
#### Returns
`Promise`\<[`IndexStats`](../interfaces/IndexStats.md)\>
#### Implementation of
[Table](../interfaces/Table.md).[indexStats](../interfaces/Table.md#indexstats)
#### Defined in
[remote/index.ts:414](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L414)
___
### listIndices
▸ **listIndices**(): `Promise`\<[`VectorIndex`](../interfaces/VectorIndex.md)[]\>
List the indicies on this table.
#### Returns
`Promise`\<[`VectorIndex`](../interfaces/VectorIndex.md)[]\>
#### Implementation of
[Table](../interfaces/Table.md).[listIndices](../interfaces/Table.md#listindices)
#### Defined in
[remote/index.ts:403](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L403)
___
### overwrite
▸ **overwrite**(`data`): `Promise`\<`number`\>
Insert records into this Table, replacing its contents.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
#### Returns
`Promise`\<`number`\>
The number of rows added to the table
#### Implementation of
[Table](../interfaces/Table.md).[overwrite](../interfaces/Table.md#overwrite)
#### Defined in
[remote/index.ts:300](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L300)
___
### search
▸ **search**(`query`): [`Query`](Query.md)\<`T`\>
Creates a search query to find the nearest neighbors of the given search term
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `query` | `T` | The query search term |
#### Returns
[`Query`](Query.md)\<`T`\>
#### Implementation of
[Table](../interfaces/Table.md).[search](../interfaces/Table.md#search)
#### Defined in
[remote/index.ts:269](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L269)
___
### update
▸ **update**(`args`): `Promise`\<`void`\>
Update rows in this table.
This can be used to update a single row, many rows, all rows, or
sometimes no rows (if your predicate matches nothing).
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `args` | [`UpdateArgs`](../interfaces/UpdateArgs.md) \| [`UpdateSqlArgs`](../interfaces/UpdateSqlArgs.md) | see [UpdateArgs](../interfaces/UpdateArgs.md) and [UpdateSqlArgs](../interfaces/UpdateSqlArgs.md) for more details |
#### Returns
`Promise`\<`void`\>
**`Examples`**
```ts
const con = await lancedb.connect("./.lancedb")
const data = [
{id: 1, vector: [3, 3], name: 'Ye'},
{id: 2, vector: [4, 4], name: 'Mike'},
];
const tbl = await con.createTable("my_table", data)
await tbl.update({
where: "id = 2",
values: { vector: [2, 2], name: "Michael" },
})
let results = await tbl.search([1, 1]).execute();
// Returns [
// {id: 2, vector: [2, 2], name: 'Michael'}
// {id: 1, vector: [3, 3], name: 'Ye'}
// ]
```
#### Implementation of
[Table](../interfaces/Table.md).[update](../interfaces/Table.md#update)
#### Defined in
[remote/index.ts:383](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/remote/index.ts#L383)

View File

@@ -22,7 +22,7 @@ Cosine distance
#### Defined in
[index.ts:1092](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1092)
[index.ts:1041](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1041)
___
@@ -34,7 +34,7 @@ Dot product
#### Defined in
[index.ts:1097](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1097)
[index.ts:1046](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1046)
___
@@ -46,4 +46,4 @@ Euclidean distance
#### Defined in
[index.ts:1087](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1087)
[index.ts:1036](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1036)

View File

@@ -22,7 +22,7 @@ Append new data to the table.
#### Defined in
[index.ts:1058](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1058)
[index.ts:1007](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1007)
___
@@ -34,7 +34,7 @@ Create a new [Table](../interfaces/Table.md).
#### Defined in
[index.ts:1054](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1054)
[index.ts:1003](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1003)
___
@@ -46,4 +46,4 @@ Overwrite the existing [Table](../interfaces/Table.md) if presented.
#### Defined in
[index.ts:1056](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1056)
[index.ts:1005](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1005)

View File

@@ -18,7 +18,7 @@
#### Defined in
[index.ts:57](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L57)
[index.ts:54](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L54)
___
@@ -28,7 +28,7 @@ ___
#### Defined in
[index.ts:59](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L59)
[index.ts:56](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L56)
___
@@ -38,4 +38,4 @@ ___
#### Defined in
[index.ts:61](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L61)
[index.ts:58](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L58)

View File

@@ -19,7 +19,7 @@ The number of bytes removed from disk.
#### Defined in
[index.ts:904](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L904)
[index.ts:878](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L878)
___
@@ -31,4 +31,4 @@ The number of old table versions removed.
#### Defined in
[index.ts:908](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L908)
[index.ts:882](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L882)

View File

@@ -22,7 +22,7 @@ fragments added.
#### Defined in
[index.ts:959](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L959)
[index.ts:933](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L933)
___
@@ -35,7 +35,7 @@ file.
#### Defined in
[index.ts:954](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L954)
[index.ts:928](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L928)
___
@@ -47,7 +47,7 @@ The number of new fragments that were created.
#### Defined in
[index.ts:949](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L949)
[index.ts:923](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L923)
___
@@ -59,4 +59,4 @@ The number of fragments that were removed.
#### Defined in
[index.ts:945](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L945)
[index.ts:919](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L919)

View File

@@ -24,7 +24,7 @@ Default is true.
#### Defined in
[index.ts:927](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L927)
[index.ts:901](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L901)
___
@@ -38,7 +38,7 @@ the deleted rows. Default is 10%.
#### Defined in
[index.ts:933](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L933)
[index.ts:907](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L907)
___
@@ -50,7 +50,7 @@ The maximum number of rows per group. Defaults to 1024.
#### Defined in
[index.ts:921](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L921)
[index.ts:895](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L895)
___
@@ -63,7 +63,7 @@ the number of cores on the machine.
#### Defined in
[index.ts:938](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L938)
[index.ts:912](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L912)
___
@@ -77,4 +77,4 @@ Defaults to 1024 * 1024.
#### Defined in
[index.ts:917](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L917)
[index.ts:891](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L891)

View File

@@ -9,7 +9,6 @@ Connection could be local against filesystem or remote against a server.
## Implemented by
- [`LocalConnection`](../classes/LocalConnection.md)
- [`RemoteConnection`](../classes/RemoteConnection.md)
## Table of contents
@@ -32,7 +31,7 @@ Connection could be local against filesystem or remote against a server.
#### Defined in
[index.ts:188](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L188)
[index.ts:183](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L183)
## Methods
@@ -60,7 +59,7 @@ Creates a new Table, optionally initializing it with new data.
#### Defined in
[index.ts:212](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L212)
[index.ts:207](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L207)
**createTable**(`name`, `data`): `Promise`\<[`Table`](Table.md)\<`number`[]\>\>
@@ -71,7 +70,7 @@ Creates a new Table and initialize it with new data.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `data` | `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
#### Returns
@@ -79,7 +78,7 @@ Creates a new Table and initialize it with new data.
#### Defined in
[index.ts:226](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L226)
[index.ts:221](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L221)
**createTable**(`name`, `data`, `options`): `Promise`\<[`Table`](Table.md)\<`number`[]\>\>
@@ -90,7 +89,7 @@ Creates a new Table and initialize it with new data.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `data` | `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `options` | [`WriteOptions`](WriteOptions.md) | The write options to use when creating the table. |
#### Returns
@@ -99,7 +98,7 @@ Creates a new Table and initialize it with new data.
#### Defined in
[index.ts:238](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L238)
[index.ts:233](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L233)
**createTable**\<`T`\>(`name`, `data`, `embeddings`): `Promise`\<[`Table`](Table.md)\<`T`\>\>
@@ -116,7 +115,7 @@ Creates a new Table and initialize it with new data.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `data` | `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `embeddings` | [`EmbeddingFunction`](EmbeddingFunction.md)\<`T`\> | An embedding function to use on this table |
#### Returns
@@ -125,7 +124,7 @@ Creates a new Table and initialize it with new data.
#### Defined in
[index.ts:251](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L251)
[index.ts:246](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L246)
**createTable**\<`T`\>(`name`, `data`, `embeddings`, `options`): `Promise`\<[`Table`](Table.md)\<`T`\>\>
@@ -142,7 +141,7 @@ Creates a new Table and initialize it with new data.
| Name | Type | Description |
| :------ | :------ | :------ |
| `name` | `string` | The name of the table. |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `data` | `Record`\<`string`, `unknown`\>[] | Non-empty Array of Records to be inserted into the table |
| `embeddings` | [`EmbeddingFunction`](EmbeddingFunction.md)\<`T`\> | An embedding function to use on this table |
| `options` | [`WriteOptions`](WriteOptions.md) | The write options to use when creating the table. |
@@ -152,7 +151,7 @@ Creates a new Table and initialize it with new data.
#### Defined in
[index.ts:264](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L264)
[index.ts:259](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L259)
___
@@ -174,7 +173,7 @@ Drop an existing table.
#### Defined in
[index.ts:275](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L275)
[index.ts:270](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L270)
___
@@ -203,7 +202,7 @@ Open a table in the database.
#### Defined in
[index.ts:198](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L198)
[index.ts:193](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L193)
___
@@ -217,4 +216,4 @@ ___
#### Defined in
[index.ts:190](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L190)
[index.ts:185](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L185)

View File

@@ -19,13 +19,9 @@
`Optional` **apiKey**: `string`
API key for the remote connections
Can also be passed by setting environment variable `LANCEDB_API_KEY`
#### Defined in
[index.ts:88](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L88)
[index.ts:81](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L81)
___
@@ -39,7 +35,7 @@ If not provided, LanceDB will use the default credentials provider chain.
#### Defined in
[index.ts:78](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L78)
[index.ts:75](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L75)
___
@@ -51,7 +47,7 @@ AWS region to connect to. Default is defaultAwsRegion.
#### Defined in
[index.ts:81](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L81)
[index.ts:78](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L78)
___
@@ -59,13 +55,13 @@ ___
`Optional` **hostOverride**: `string`
Override the host URL for the remote connection.
Override the host URL for the remote connections.
This is useful for local testing.
#### Defined in
[index.ts:98](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L98)
[index.ts:91](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L91)
___
@@ -77,7 +73,7 @@ Region to connect
#### Defined in
[index.ts:91](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L91)
[index.ts:84](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L84)
___
@@ -89,8 +85,8 @@ LanceDB database URI.
- `/path/to/database` - local database
- `s3://bucket/path/to/database` or `gs://bucket/path/to/database` - database on cloud storage
- `db://host:port` - remote database (LanceDB cloud)
- `db://host:port` - remote database (SaaS)
#### Defined in
[index.ts:72](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L72)
[index.ts:69](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L69)

View File

@@ -26,7 +26,7 @@
#### Defined in
[index.ts:121](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L121)
[index.ts:116](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L116)
___
@@ -36,7 +36,7 @@ ___
#### Defined in
[index.ts:127](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L127)
[index.ts:122](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L122)
___
@@ -46,7 +46,7 @@ ___
#### Defined in
[index.ts:118](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L118)
[index.ts:113](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L113)
___
@@ -56,7 +56,7 @@ ___
#### Defined in
[index.ts:124](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L124)
[index.ts:119](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L119)
___
@@ -66,4 +66,4 @@ ___
#### Defined in
[index.ts:130](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L130)
[index.ts:125](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L125)

View File

@@ -45,7 +45,7 @@ Creates a vector representation for the given values.
#### Defined in
[embedding/embedding_function.ts:27](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/embedding/embedding_function.ts#L27)
[embedding/embedding_function.ts:27](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/embedding_function.ts#L27)
___
@@ -57,4 +57,4 @@ The name of the column that will be used as input for the Embedding Function.
#### Defined in
[embedding/embedding_function.ts:22](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/embedding/embedding_function.ts#L22)
[embedding/embedding_function.ts:22](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/embedding/embedding_function.ts#L22)

View File

@@ -17,7 +17,7 @@
#### Defined in
[index.ts:485](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L485)
[index.ts:478](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L478)
___
@@ -27,4 +27,4 @@ ___
#### Defined in
[index.ts:486](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L486)
[index.ts:479](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L479)

View File

@@ -29,7 +29,7 @@ The column to be indexed
#### Defined in
[index.ts:968](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L968)
[index.ts:942](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L942)
___
@@ -41,7 +41,7 @@ Cache size of the index
#### Defined in
[index.ts:1042](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1042)
[index.ts:991](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L991)
___
@@ -49,11 +49,11 @@ ___
`Optional` **index\_name**: `string`
Note: this parameter is not supported on LanceDB Cloud
A unique name for the index
#### Defined in
[index.ts:976](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L976)
[index.ts:947](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L947)
___
@@ -61,11 +61,11 @@ ___
`Optional` **max\_iters**: `number`
Note: this parameter is not yet supported on LanceDB Cloud
The max number of iterations for kmeans training.
#### Defined in
[index.ts:997](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L997)
[index.ts:962](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L962)
___
@@ -73,11 +73,11 @@ ___
`Optional` **max\_opq\_iters**: `number`
Note: this parameter is not yet supported on LanceDB Cloud
Max number of iterations to train OPQ, if `use_opq` is true.
#### Defined in
[index.ts:1029](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1029)
[index.ts:981](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L981)
___
@@ -89,7 +89,7 @@ Metric type, L2 or Cosine
#### Defined in
[index.ts:981](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L981)
[index.ts:952](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L952)
___
@@ -97,11 +97,11 @@ ___
`Optional` **num\_bits**: `number`
Note: this parameter is not yet supported on LanceDB Cloud
The number of bits to present one PQ centroid.
#### Defined in
[index.ts:1021](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1021)
[index.ts:976](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L976)
___
@@ -109,11 +109,11 @@ ___
`Optional` **num\_partitions**: `number`
Note: this parameter is not yet supported on LanceDB Cloud
The number of partitions this index
#### Defined in
[index.ts:989](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L989)
[index.ts:957](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L957)
___
@@ -121,11 +121,11 @@ ___
`Optional` **num\_sub\_vectors**: `number`
Note: this parameter is not yet supported on LanceDB Cloud
Number of subvectors to build PQ code
#### Defined in
[index.ts:1013](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1013)
[index.ts:972](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L972)
___
@@ -133,11 +133,11 @@ ___
`Optional` **replace**: `boolean`
Note: this parameter is not yet supported on LanceDB Cloud
Replace an existing index with the same name if it exists.
#### Defined in
[index.ts:1037](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1037)
[index.ts:986](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L986)
___
@@ -147,7 +147,7 @@ ___
#### Defined in
[index.ts:1044](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1044)
[index.ts:993](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L993)
___
@@ -155,8 +155,8 @@ ___
• `Optional` **use\_opq**: `boolean`
Note: this parameter is not yet supported on LanceDB Cloud
Train as optimized product quantization.
#### Defined in
[index.ts:1005](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1005)
[index.ts:967](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L967)

View File

@@ -13,7 +13,6 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
## Implemented by
- [`LocalTable`](../classes/LocalTable.md)
- [`RemoteTable`](../classes/RemoteTable.md)
## Table of contents
@@ -36,7 +35,7 @@ A LanceDB Table is the collection of Records. Each Record has one or more vector
### add
**add**: (`data`: `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[]) => `Promise`\<`number`\>
**add**: (`data`: `Record`\<`string`, `unknown`\>[]) => `Promise`\<`number`\>
#### Type declaration
@@ -48,7 +47,7 @@ Insert records into this Table.
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
| `data` | `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
##### Returns
@@ -58,7 +57,7 @@ The number of rows added to the table
#### Defined in
[index.ts:296](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L296)
[index.ts:291](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L291)
___
@@ -78,7 +77,7 @@ Returns the number of rows in this table.
#### Defined in
[index.ts:368](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L368)
[index.ts:361](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L361)
___
@@ -108,7 +107,7 @@ VectorIndexParams.
#### Defined in
[index.ts:313](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L313)
[index.ts:306](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L306)
___
@@ -143,7 +142,7 @@ await table.createScalarIndex('my_col')
#### Defined in
[index.ts:363](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L363)
[index.ts:356](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L356)
___
@@ -195,7 +194,7 @@ await tbl.countRows() // Returns 1
#### Defined in
[index.ts:402](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L402)
[index.ts:395](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L395)
___
@@ -221,7 +220,7 @@ Get statistics about an index.
#### Defined in
[index.ts:445](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L445)
[index.ts:438](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L438)
___
@@ -241,7 +240,7 @@ List the indicies on this table.
#### Defined in
[index.ts:440](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L440)
[index.ts:433](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L433)
___
@@ -251,13 +250,13 @@ ___
#### Defined in
[index.ts:282](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L282)
[index.ts:277](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L277)
___
### overwrite
• **overwrite**: (`data`: `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[]) => `Promise`\<`number`\>
• **overwrite**: (`data`: `Record`\<`string`, `unknown`\>[]) => `Promise`\<`number`\>
#### Type declaration
@@ -269,7 +268,7 @@ Insert records into this Table, replacing its contents.
| Name | Type | Description |
| :------ | :------ | :------ |
| `data` | `Table`\<`any`\> \| `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
| `data` | `Record`\<`string`, `unknown`\>[] | Records to be inserted into the Table |
##### Returns
@@ -279,7 +278,7 @@ The number of rows added to the table
#### Defined in
[index.ts:304](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L304)
[index.ts:299](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L299)
___
@@ -289,7 +288,7 @@ ___
#### Defined in
[index.ts:447](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L447)
[index.ts:440](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L440)
___
@@ -315,7 +314,7 @@ Creates a search query to find the nearest neighbors of the given search term
#### Defined in
[index.ts:288](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L288)
[index.ts:283](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L283)
___
@@ -366,4 +365,4 @@ let results = await tbl.search([1, 1]).execute();
#### Defined in
[index.ts:435](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L435)
[index.ts:428](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L428)

View File

@@ -20,7 +20,7 @@ new values to set
#### Defined in
[index.ts:461](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L461)
[index.ts:454](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L454)
___
@@ -33,4 +33,4 @@ in which case all rows will be updated.
#### Defined in
[index.ts:455](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L455)
[index.ts:448](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L448)

View File

@@ -20,7 +20,7 @@ new values to set as SQL expressions.
#### Defined in
[index.ts:475](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L475)
[index.ts:468](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L468)
___
@@ -33,4 +33,4 @@ in which case all rows will be updated.
#### Defined in
[index.ts:469](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L469)
[index.ts:462](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L462)

View File

@@ -18,7 +18,7 @@
#### Defined in
[index.ts:479](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L479)
[index.ts:472](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L472)
___
@@ -28,7 +28,7 @@ ___
#### Defined in
[index.ts:480](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L480)
[index.ts:473](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L473)
___
@@ -38,4 +38,4 @@ ___
#### Defined in
[index.ts:481](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L481)
[index.ts:474](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L474)

View File

@@ -24,4 +24,4 @@ A [WriteMode](../enums/WriteMode.md) to use on this operation
#### Defined in
[index.ts:1066](https://github.com/lancedb/lancedb/blob/5228ca4/node/src/index.ts#L1066)
[index.ts:1015](https://github.com/lancedb/lancedb/blob/c89d5e6/node/src/index.ts#L1015)

View File

@@ -290,7 +290,7 @@
"from lancedb.pydantic import LanceModel, Vector\n",
"\n",
"class Pets(LanceModel):\n",
" vector: Vector(clip.ndims) = clip.VectorField()\n",
" vector: Vector(clip.ndims()) = clip.VectorField()\n",
" image_uri: str = clip.SourceField()\n",
"\n",
" @property\n",
@@ -360,7 +360,7 @@
" table = db.create_table(\"pets\", schema=Pets)\n",
" # use a sampling of 1000 images\n",
" p = Path(\"~/Downloads/images\").expanduser()\n",
" uris = [str(f) for f in p.iterdir()]\n",
" uris = [str(f) for f in p.glob(\"*.jpg\")]\n",
" uris = sample(uris, 1000)\n",
" table.add(pd.DataFrame({\"image_uri\": uris}))"
]
@@ -543,7 +543,7 @@
],
"source": [
"from PIL import Image\n",
"p = Path(\"/Users/changshe/Downloads/images/samoyed_100.jpg\")\n",
"p = Path(\"~/Downloads/images/samoyed_100.jpg\").expanduser()\n",
"query_image = Image.open(p)\n",
"query_image"
]

View File

@@ -23,10 +23,8 @@ from multiprocessing import Pool
import lance
import pyarrow as pa
from datasets import load_dataset
from PIL import Image
from transformers import CLIPModel, CLIPProcessor, CLIPTokenizerFast
import lancedb
MODEL_ID = "openai/clip-vit-base-patch32"

File diff suppressed because it is too large Load Diff

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@@ -13,7 +13,7 @@
},
{
"cell_type": "code",
"execution_count": 50,
"execution_count": 2,
"id": "c1b4e34b-a49c-471d-a343-a5940bb5138a",
"metadata": {},
"outputs": [],
@@ -23,7 +23,7 @@
},
{
"cell_type": "code",
"execution_count": 1,
"execution_count": 3,
"id": "4e5a8d07-d9a1-48c1-913a-8e0629289579",
"metadata": {},
"outputs": [],
@@ -44,7 +44,7 @@
},
{
"cell_type": "code",
"execution_count": 2,
"execution_count": 4,
"id": "5df12f66-8d99-43ad-8d0b-22189ec0a6b9",
"metadata": {},
"outputs": [
@@ -62,7 +62,7 @@
"long: [[-122.7,-74.1]]"
]
},
"execution_count": 2,
"execution_count": 4,
"metadata": {},
"output_type": "execute_result"
}
@@ -90,7 +90,7 @@
},
{
"cell_type": "code",
"execution_count": 3,
"execution_count": 5,
"id": "f4d87ae9-0ccb-48eb-b31d-bb8f2370e47e",
"metadata": {},
"outputs": [
@@ -108,7 +108,7 @@
"long: [[-122.7,-74.1]]"
]
},
"execution_count": 3,
"execution_count": 5,
"metadata": {},
"output_type": "execute_result"
}
@@ -135,10 +135,17 @@
},
{
"cell_type": "code",
"execution_count": 8,
"execution_count": 6,
"id": "25f34bcf-fca0-4431-8601-eac95d1bd347",
"metadata": {},
"outputs": [
{
"name": "stderr",
"output_type": "stream",
"text": [
"[2024-01-31T18:59:33Z WARN lance::dataset] No existing dataset at /Users/qian/Work/LanceDB/lancedb/docs/src/notebooks/.lancedb/table3.lance, it will be created\n"
]
},
{
"data": {
"text/plain": [
@@ -148,7 +155,7 @@
"long: float"
]
},
"execution_count": 8,
"execution_count": 6,
"metadata": {},
"output_type": "execute_result"
}
@@ -171,45 +178,51 @@
"id": "4df51925-7ca2-4005-9c72-38b3d26240c6",
"metadata": {},
"source": [
"### From PyArrow Tables\n",
"### From an Arrow Table\n",
"\n",
"You can also create LanceDB tables directly from pyarrow tables"
"You can also create LanceDB tables directly from pyarrow tables. LanceDB supports float16 type."
]
},
{
"cell_type": "code",
"execution_count": 12,
"execution_count": 7,
"id": "90a880f6-be43-4c9d-ba65-0b05197c0f6f",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"vector: fixed_size_list<item: float>[2]\n",
" child 0, item: float\n",
"item: string\n",
"price: double"
"vector: fixed_size_list<item: halffloat>[16]\n",
" child 0, item: halffloat\n",
"text: string"
]
},
"execution_count": 12,
"execution_count": 7,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"table = pa.Table.from_arrays(\n",
" [\n",
" pa.array([[3.1, 4.1], [5.9, 26.5]],\n",
" pa.list_(pa.float32(), 2)),\n",
" pa.array([\"foo\", \"bar\"]),\n",
" pa.array([10.0, 20.0]),\n",
" ],\n",
" [\"vector\", \"item\", \"price\"],\n",
" )\n",
"import numpy as np\n",
"\n",
"db = lancedb.connect(\"db\")\n",
"dim = 16\n",
"total = 2\n",
"schema = pa.schema(\n",
" [\n",
" pa.field(\"vector\", pa.list_(pa.float16(), dim)),\n",
" pa.field(\"text\", pa.string())\n",
" ]\n",
")\n",
"data = pa.Table.from_arrays(\n",
" [\n",
" pa.array([np.random.randn(dim).astype(np.float16) for _ in range(total)],\n",
" pa.list_(pa.float16(), dim)),\n",
" pa.array([\"foo\", \"bar\"])\n",
" ],\n",
" [\"vector\", \"text\"],\n",
")\n",
"\n",
"tbl = db.create_table(\"test1\", table, mode=\"overwrite\")\n",
"tbl = db.create_table(\"f16_tbl\", data, schema=schema)\n",
"tbl.schema"
]
},
@@ -225,7 +238,7 @@
},
{
"cell_type": "code",
"execution_count": 13,
"execution_count": 8,
"id": "d81121d7-e4b7-447c-a48c-974b6ebb464a",
"metadata": {},
"outputs": [
@@ -240,7 +253,7 @@
"imdb_id: int64 not null"
]
},
"execution_count": 13,
"execution_count": 8,
"metadata": {},
"output_type": "execute_result"
}
@@ -282,7 +295,7 @@
},
{
"cell_type": "code",
"execution_count": 14,
"execution_count": 9,
"id": "bc247142-4e3c-41a2-b94c-8e00d2c2a508",
"metadata": {},
"outputs": [
@@ -292,7 +305,7 @@
"LanceTable(table4)"
]
},
"execution_count": 14,
"execution_count": 9,
"metadata": {},
"output_type": "execute_result"
}
@@ -333,7 +346,7 @@
},
{
"cell_type": "code",
"execution_count": 16,
"execution_count": 10,
"id": "25ad3523-e0c9-4c28-b3df-38189c4e0e5f",
"metadata": {},
"outputs": [
@@ -346,7 +359,7 @@
"price: double not null"
]
},
"execution_count": 16,
"execution_count": 10,
"metadata": {},
"output_type": "execute_result"
}
@@ -385,7 +398,7 @@
},
{
"cell_type": "code",
"execution_count": 17,
"execution_count": 11,
"id": "2814173a-eacc-4dd8-a64d-6312b44582cc",
"metadata": {},
"outputs": [],
@@ -411,7 +424,7 @@
},
{
"cell_type": "code",
"execution_count": 18,
"execution_count": 12,
"id": "df9e13c0-41f6-437f-9dfa-2fd71d3d9c45",
"metadata": {},
"outputs": [
@@ -421,7 +434,7 @@
"['table6', 'table4', 'table5', 'movielens_small']"
]
},
"execution_count": 18,
"execution_count": 12,
"metadata": {},
"output_type": "execute_result"
}
@@ -432,7 +445,7 @@
},
{
"cell_type": "code",
"execution_count": 20,
"execution_count": 13,
"id": "9343f5ad-6024-42ee-ac2f-6c1471df8679",
"metadata": {},
"outputs": [
@@ -541,7 +554,7 @@
"9 [5.9, 26.5] bar 20.0"
]
},
"execution_count": 20,
"execution_count": 13,
"metadata": {},
"output_type": "execute_result"
}
@@ -564,7 +577,7 @@
},
{
"cell_type": "code",
"execution_count": 21,
"execution_count": 14,
"id": "8a56250f-73a1-4c26-a6ad-5c7a0ce3a9ab",
"metadata": {},
"outputs": [],
@@ -590,7 +603,7 @@
},
{
"cell_type": "code",
"execution_count": 22,
"execution_count": 15,
"id": "030c7057-b98e-4e2f-be14-b8c1f927f83c",
"metadata": {},
"outputs": [],
@@ -621,7 +634,7 @@
},
{
"cell_type": "code",
"execution_count": 24,
"execution_count": 16,
"id": "e7a17de2-08d2-41b7-bd05-f63d1045ab1f",
"metadata": {},
"outputs": [
@@ -629,16 +642,16 @@
"name": "stdout",
"output_type": "stream",
"text": [
"32\n"
"22\n"
]
},
{
"data": {
"text/plain": [
"17"
"12"
]
},
"execution_count": 24,
"execution_count": 16,
"metadata": {},
"output_type": "execute_result"
}
@@ -661,7 +674,7 @@
},
{
"cell_type": "code",
"execution_count": 30,
"execution_count": 17,
"id": "fe3310bd-08f4-4a22-a63b-b3127d22f9f7",
"metadata": {},
"outputs": [
@@ -681,25 +694,20 @@
"8 [3.1, 4.1] foo 10.0\n",
"9 [3.1, 4.1] foo 10.0\n",
"10 [3.1, 4.1] foo 10.0\n",
"11 [3.1, 4.1] foo 10.0\n",
"12 [3.1, 4.1] foo 10.0\n",
"13 [3.1, 4.1] foo 10.0\n",
"14 [3.1, 4.1] foo 10.0\n",
"15 [3.1, 4.1] foo 10.0\n",
"16 [3.1, 4.1] foo 10.0\n"
"11 [3.1, 4.1] foo 10.0\n"
]
},
{
"ename": "OSError",
"evalue": "LanceError(IO): Error during planning: column foo does not exist",
"evalue": "LanceError(IO): Error during planning: column foo does not exist, /Users/runner/work/lance/lance/rust/lance-core/src/error.rs:212:23",
"output_type": "error",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[0;31mOSError\u001b[0m Traceback (most recent call last)",
"Cell \u001b[0;32mIn[30], line 4\u001b[0m\n\u001b[1;32m 2\u001b[0m to_remove \u001b[38;5;241m=\u001b[39m \u001b[38;5;124m\"\u001b[39m\u001b[38;5;124m, \u001b[39m\u001b[38;5;124m\"\u001b[39m\u001b[38;5;241m.\u001b[39mjoin(\u001b[38;5;28mstr\u001b[39m(v) \u001b[38;5;28;01mfor\u001b[39;00m v \u001b[38;5;129;01min\u001b[39;00m to_remove)\n\u001b[1;32m 3\u001b[0m \u001b[38;5;28mprint\u001b[39m(tbl\u001b[38;5;241m.\u001b[39mto_pandas())\n\u001b[0;32m----> 4\u001b[0m \u001b[43mtbl\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mdelete\u001b[49m\u001b[43m(\u001b[49m\u001b[38;5;124;43mf\u001b[39;49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[38;5;124;43mitem IN (\u001b[39;49m\u001b[38;5;132;43;01m{\u001b[39;49;00m\u001b[43mto_remove\u001b[49m\u001b[38;5;132;43;01m}\u001b[39;49;00m\u001b[38;5;124;43m)\u001b[39;49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[43m)\u001b[49m\n\u001b[1;32m 5\u001b[0m tbl\u001b[38;5;241m.\u001b[39mto_pandas()\n",
"File \u001b[0;32m~/Documents/lancedb/lancedb/python/lancedb/table.py:610\u001b[0m, in \u001b[0;36mLanceTable.delete\u001b[0;34m(self, where)\u001b[0m\n\u001b[1;32m 609\u001b[0m \u001b[38;5;28;01mdef\u001b[39;00m \u001b[38;5;21mdelete\u001b[39m(\u001b[38;5;28mself\u001b[39m, where: \u001b[38;5;28mstr\u001b[39m):\n\u001b[0;32m--> 610\u001b[0m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43m_dataset\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mdelete\u001b[49m\u001b[43m(\u001b[49m\u001b[43mwhere\u001b[49m\u001b[43m)\u001b[49m\n",
"File \u001b[0;32m~/Documents/lancedb/lancedb/env/lib/python3.11/site-packages/lance/dataset.py:489\u001b[0m, in \u001b[0;36mLanceDataset.delete\u001b[0;34m(self, predicate)\u001b[0m\n\u001b[1;32m 487\u001b[0m \u001b[38;5;28;01mif\u001b[39;00m \u001b[38;5;28misinstance\u001b[39m(predicate, pa\u001b[38;5;241m.\u001b[39mcompute\u001b[38;5;241m.\u001b[39mExpression):\n\u001b[1;32m 488\u001b[0m predicate \u001b[38;5;241m=\u001b[39m \u001b[38;5;28mstr\u001b[39m(predicate)\n\u001b[0;32m--> 489\u001b[0m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43m_ds\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mdelete\u001b[49m\u001b[43m(\u001b[49m\u001b[43mpredicate\u001b[49m\u001b[43m)\u001b[49m\n",
"\u001b[0;31mOSError\u001b[0m: LanceError(IO): Error during planning: column foo does not exist"
"Cell \u001b[0;32mIn[17], line 4\u001b[0m\n\u001b[1;32m 2\u001b[0m to_remove \u001b[38;5;241m=\u001b[39m \u001b[38;5;124m\"\u001b[39m\u001b[38;5;124m, \u001b[39m\u001b[38;5;124m\"\u001b[39m\u001b[38;5;241m.\u001b[39mjoin(\u001b[38;5;28mstr\u001b[39m(v) \u001b[38;5;28;01mfor\u001b[39;00m v \u001b[38;5;129;01min\u001b[39;00m to_remove)\n\u001b[1;32m 3\u001b[0m \u001b[38;5;28mprint\u001b[39m(tbl\u001b[38;5;241m.\u001b[39mto_pandas())\n\u001b[0;32m----> 4\u001b[0m \u001b[43mtbl\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mdelete\u001b[49m\u001b[43m(\u001b[49m\u001b[38;5;124;43mf\u001b[39;49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[38;5;124;43mitem IN (\u001b[39;49m\u001b[38;5;132;43;01m{\u001b[39;49;00m\u001b[43mto_remove\u001b[49m\u001b[38;5;132;43;01m}\u001b[39;49;00m\u001b[38;5;124;43m)\u001b[39;49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[43m)\u001b[49m\n",
"File \u001b[0;32m~/Work/LanceDB/lancedb/docs/doc-venv/lib/python3.11/site-packages/lancedb/table.py:872\u001b[0m, in \u001b[0;36mLanceTable.delete\u001b[0;34m(self, where)\u001b[0m\n\u001b[1;32m 871\u001b[0m \u001b[38;5;28;01mdef\u001b[39;00m \u001b[38;5;21mdelete\u001b[39m(\u001b[38;5;28mself\u001b[39m, where: \u001b[38;5;28mstr\u001b[39m):\n\u001b[0;32m--> 872\u001b[0m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43m_dataset\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mdelete\u001b[49m\u001b[43m(\u001b[49m\u001b[43mwhere\u001b[49m\u001b[43m)\u001b[49m\n",
"File \u001b[0;32m~/Work/LanceDB/lancedb/docs/doc-venv/lib/python3.11/site-packages/lance/dataset.py:596\u001b[0m, in \u001b[0;36mLanceDataset.delete\u001b[0;34m(self, predicate)\u001b[0m\n\u001b[1;32m 594\u001b[0m \u001b[38;5;28;01mif\u001b[39;00m \u001b[38;5;28misinstance\u001b[39m(predicate, pa\u001b[38;5;241m.\u001b[39mcompute\u001b[38;5;241m.\u001b[39mExpression):\n\u001b[1;32m 595\u001b[0m predicate \u001b[38;5;241m=\u001b[39m \u001b[38;5;28mstr\u001b[39m(predicate)\n\u001b[0;32m--> 596\u001b[0m \u001b[38;5;28;43mself\u001b[39;49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43m_ds\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mdelete\u001b[49m\u001b[43m(\u001b[49m\u001b[43mpredicate\u001b[49m\u001b[43m)\u001b[49m\n",
"\u001b[0;31mOSError\u001b[0m: LanceError(IO): Error during planning: column foo does not exist, /Users/runner/work/lance/lance/rust/lance-core/src/error.rs:212:23"
]
}
],
@@ -712,7 +720,7 @@
},
{
"cell_type": "code",
"execution_count": 43,
"execution_count": null,
"id": "87d5bc21-847f-4c81-b56e-f6dbe5d05aac",
"metadata": {},
"outputs": [],
@@ -729,7 +737,7 @@
},
{
"cell_type": "code",
"execution_count": 44,
"execution_count": null,
"id": "9cba4519-eb3a-4941-ab7e-873d762e750f",
"metadata": {},
"outputs": [],
@@ -742,7 +750,7 @@
},
{
"cell_type": "code",
"execution_count": 46,
"execution_count": null,
"id": "5bdc9801-d5ed-4871-92d0-88b27108e788",
"metadata": {},
"outputs": [
@@ -817,7 +825,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.11.4"
"version": "3.11.7"
}
},
"nbformat": 4,

View File

@@ -1,6 +1,9 @@
# DuckDB
LanceDB is very well-integrated with [DuckDB](https://duckdb.org/), an in-process SQL OLAP database. This integration is done via [Arrow](https://duckdb.org/docs/guides/python/sql_on_arrow) .
In Python, LanceDB tables can also be queried with [DuckDB](https://duckdb.org/), an in-process SQL OLAP database. This means you can write complex SQL queries to analyze your data in LanceDB.
This integration is done via [Apache Arrow](https://duckdb.org/docs/guides/python/sql_on_arrow), which provides zero-copy data sharing between LanceDB and DuckDB. DuckDB is capable of passing down column selections and basic filters to LanceDB, reducing the amount of data that needs to be scanned to perform your query. Finally, the integration allows streaming data from LanceDB tables, allowing you to aggregate tables that won't fit into memory. All of this uses the same mechanism described in DuckDB's blog post *[DuckDB quacks Arrow](https://duckdb.org/2021/12/03/duck-arrow.html)*.
We can demonstrate this by first installing `duckdb` and `lancedb`.
@@ -19,14 +22,15 @@ data = [
{"vector": [5.9, 26.5], "item": "bar", "price": 20.0}
]
table = db.create_table("pd_table", data=data)
arrow_table = table.to_arrow()
```
DuckDB can directly query the `pyarrow.Table` object:
To query the table, first call `to_lance` to convert the table to a "dataset", which is an object that can be queried by DuckDB. Then all you need to do is reference that dataset by the same name in your SQL query.
```python
import duckdb
arrow_table = table.to_lance()
duckdb.query("SELECT * FROM arrow_table")
```

View File

@@ -58,6 +58,8 @@ pip install lancedb
::: lancedb.schema.vector
::: lancedb.merge.LanceMergeInsertBuilder
## Integrations
### Pydantic

View File

@@ -0,0 +1,20 @@
# Python API Reference (SaaS)
This section contains the API reference for the SaaS Python API.
## Installation
```shell
pip install lancedb
```
## Connection
::: lancedb.connect
::: lancedb.remote.db.RemoteDBConnection
## Table
::: lancedb.remote.table.RemoteTable

View File

@@ -2,27 +2,26 @@
A vector search finds the approximate or exact nearest neighbors to a given query vector.
* In a recommendation system or search engine, you can find similar records to
the one you searched.
* In LLM and other AI applications,
each data point can be represented by [embeddings generated from existing models](embeddings/index.md),
following which the search returns the most relevant features.
- In a recommendation system or search engine, you can find similar records to
the one you searched.
- In LLM and other AI applications,
each data point can be represented by [embeddings generated from existing models](embeddings/index.md),
following which the search returns the most relevant features.
## Distance metrics
Distance metrics are a measure of the similarity between a pair of vectors.
Currently, LanceDB supports the following metrics:
| Metric | Description |
| ----------- | ------------------------------------ |
| `l2` | [Euclidean / L2 distance](https://en.wikipedia.org/wiki/Euclidean_distance) |
| `cosine` | [Cosine Similarity](https://en.wikipedia.org/wiki/Cosine_similarity)|
| `dot` | [Dot Production](https://en.wikipedia.org/wiki/Dot_product) |
| Metric | Description |
| -------- | --------------------------------------------------------------------------- |
| `l2` | [Euclidean / L2 distance](https://en.wikipedia.org/wiki/Euclidean_distance) |
| `cosine` | [Cosine Similarity](https://en.wikipedia.org/wiki/Cosine_similarity) |
| `dot` | [Dot Production](https://en.wikipedia.org/wiki/Dot_product) |
## Exhaustive search (kNN)
If you do not create a vector index, LanceDB exhaustively scans the *entire* vector space
If you do not create a vector index, LanceDB exhaustively scans the _entire_ vector space
and compute the distance to every vector in order to find the exact nearest neighbors. This is effectively a kNN search.
<!-- Setup Code
@@ -38,22 +37,9 @@ data = [{"vector": row, "item": f"item {i}"}
db.create_table("my_vectors", data=data)
```
-->
<!-- Setup Code
```javascript
const vectordb_setup = require('vectordb')
const db_setup = await vectordb_setup.connect('data/sample-lancedb')
let data = []
for (let i = 0; i < 10_000; i++) {
data.push({vector: Array(1536).fill(i), id: `${i}`, content: "", longId: `${i}`},)
}
await db_setup.createTable('my_vectors', data)
```
-->
=== "Python"
```python
import lancedb
import numpy as np
@@ -70,17 +56,12 @@ await db_setup.createTable('my_vectors', data)
=== "JavaScript"
```javascript
const vectordb = require('vectordb')
const db = await vectordb.connect('data/sample-lancedb')
--8<-- "docs/src/search_legacy.ts:import"
const tbl = await db.openTable("my_vectors")
const results_1 = await tbl.search(Array(1536).fill(1.2))
.limit(10)
.execute()
--8<-- "docs/src/search_legacy.ts:search1"
```
By default, `l2` will be used as metric type. You can specify the metric type as
By default, `l2` will be used as metric type. You can specify the metric type as
`cosine` or `dot` if required.
=== "Python"
@@ -92,20 +73,16 @@ By default, `l2` will be used as metric type. You can specify the metric type as
.to_list()
```
=== "JavaScript"
```javascript
const results_2 = await tbl.search(Array(1536).fill(1.2))
.metricType("cosine")
.limit(10)
.execute()
--8<-- "docs/src/search_legacy.ts:search2"
```
## Approximate nearest neighbor (ANN) search
To perform scalable vector retrieval with acceptable latencies, it's common to build a vector index.
While the exhaustive search is guaranteed to always return 100% recall, the approximate nature of
While the exhaustive search is guaranteed to always return 100% recall, the approximate nature of
an ANN search means that using an index often involves a trade-off between recall and latency.
See the [IVF_PQ index](./concepts/index_ivfpq.md.md) for a deeper description of how `IVF_PQ`
@@ -117,7 +94,9 @@ LanceDB returns vector search results via different formats commonly used in pyt
Let's create a LanceDB table with a nested schema:
=== "Python"
```python
from datetime import datetime
import lancedb
from lancedb.pydantic import LanceModel, Vector
@@ -153,7 +132,7 @@ Let's create a LanceDB table with a nested schema:
### As a PyArrow table
Using `to_arrow()` we can get the results back as a pyarrow Table.
This result table has the same columns as the LanceDB table, with
This result table has the same columns as the LanceDB table, with
the addition of an `_distance` column for vector search or a `score`
column for full text search.
@@ -169,11 +148,11 @@ Let's create a LanceDB table with a nested schema:
tbl.search(np.random.randn(1536)).to_pandas()
```
While other formats like Arrow/Pydantic/Python dicts have a natural
way to handle nested schemas, pandas can only store nested data as a
While other formats like Arrow/Pydantic/Python dicts have a natural
way to handle nested schemas, pandas can only store nested data as a
python dict column, which makes it difficult to support nested references.
So for convenience, you can also tell LanceDB to flatten a nested schema
when creating the pandas dataframe.
So for convenience, you can also tell LanceDB to flatten a nested schema
when creating the pandas dataframe.
```python
tbl.search(np.random.randn(1536)).to_pandas(flatten=True)

41
docs/src/search_legacy.ts Normal file
View File

@@ -0,0 +1,41 @@
// --8<-- [start:import]
import * as lancedb from "vectordb";
// --8<-- [end:import]
import * as fs from "fs";
async function setup() {
fs.rmSync("data/sample-lancedb", { recursive: true, force: true });
const db = await lancedb.connect("data/sample-lancedb");
let data = [];
for (let i = 0; i < 10_000; i++) {
data.push({
vector: Array(1536).fill(i),
id: `${i}`,
content: "",
longId: `${i}`,
});
}
await db.createTable("my_vectors", data);
}
async () => {
await setup();
// --8<-- [start:search1]
const db = await lancedb.connect("data/sample-lancedb");
const tbl = await db.openTable("my_vectors");
const results_1 = await tbl.search(Array(1536).fill(1.2)).limit(10).execute();
// --8<-- [end:search1]
// --8<-- [start:search2]
const results_2 = await tbl
.search(Array(1536).fill(1.2))
.metricType(lancedb.MetricType.Cosine)
.limit(10)
.execute();
// --8<-- [end:search2]
console.log("search: done");
};

View File

@@ -8,7 +8,7 @@ option that performs the filter prior to vector search. This can be useful to na
the search space on a very large dataset to reduce query latency.
<!-- Setup Code
```python
```python
import lancedb
import numpy as np
uri = "data/sample-lancedb"
@@ -21,7 +21,7 @@ tbl = db.create_table("my_vectors", data=data)
```
-->
<!-- Setup Code
```javascript
```javascript
const vectordb = require('vectordb')
const db = await vectordb.connect('data/sample-lancedb')
@@ -34,6 +34,7 @@ const tbl = await db.createTable('myVectors', data)
-->
=== "Python"
```py
result = (
tbl.search([0.5, 0.2])
@@ -44,12 +45,9 @@ const tbl = await db.createTable('myVectors', data)
```
=== "JavaScript"
```javascript
let result = await tbl.search(Array(1536).fill(0.5))
.limit(1)
.filter("id = 10")
.prefilter(true)
.execute()
--8<-- "docs/src/sql_legacy.ts:search"
```
## SQL filters
@@ -60,14 +58,14 @@ It can be used during vector search, update, and deletion operations.
Currently, Lance supports a growing list of SQL expressions.
* ``>``, ``>=``, ``<``, ``<=``, ``=``
* ``AND``, ``OR``, ``NOT``
* ``IS NULL``, ``IS NOT NULL``
* ``IS TRUE``, ``IS NOT TRUE``, ``IS FALSE``, ``IS NOT FALSE``
* ``IN``
* ``LIKE``, ``NOT LIKE``
* ``CAST``
* ``regexp_match(column, pattern)``
- `>`, `>=`, `<`, `<=`, `=`
- `AND`, `OR`, `NOT`
- `IS NULL`, `IS NOT NULL`
- `IS TRUE`, `IS NOT TRUE`, `IS FALSE`, `IS NOT FALSE`
- `IN`
- `LIKE`, `NOT LIKE`
- `CAST`
- `regexp_match(column, pattern)`
For example, the following filter string is acceptable:
@@ -82,29 +80,27 @@ For example, the following filter string is acceptable:
=== "Javascript"
```javascript
await tbl.search(Array(1536).fill(0))
.where("(item IN ('item 0', 'item 2')) AND (id > 10)")
.execute()
--8<-- "docs/src/sql_legacy.ts:vec_search"
```
If your column name contains special characters or is a [SQL Keyword](https://docs.rs/sqlparser/latest/sqlparser/keywords/index.html),
you can use backtick (`` ` ``) to escape it. For nested fields, each segment of the
path must be wrapped in backticks.
=== "SQL"
```sql
`CUBE` = 10 AND `column name with space` IS NOT NULL
AND `nested with space`.`inner with space` < 2
```
!!! warning
Field names containing periods (``.``) are not supported.
!!!warning "Field names containing periods (`.`) are not supported."
Literals for dates, timestamps, and decimals can be written by writing the string
value after the type name. For example
=== "SQL"
```sql
date_col = date '2021-01-01'
and timestamp_col = timestamp '2021-01-01 00:00:00'
@@ -114,49 +110,47 @@ value after the type name. For example
For timestamp columns, the precision can be specified as a number in the type
parameter. Microsecond precision (6) is the default.
| SQL | Time unit |
|------------------|--------------|
| ``timestamp(0)`` | Seconds |
| ``timestamp(3)`` | Milliseconds |
| ``timestamp(6)`` | Microseconds |
| ``timestamp(9)`` | Nanoseconds |
| SQL | Time unit |
| -------------- | ------------ |
| `timestamp(0)` | Seconds |
| `timestamp(3)` | Milliseconds |
| `timestamp(6)` | Microseconds |
| `timestamp(9)` | Nanoseconds |
LanceDB internally stores data in [Apache Arrow](https://arrow.apache.org/) format.
The mapping from SQL types to Arrow types is:
| SQL type | Arrow type |
|----------|------------|
| ``boolean`` | ``Boolean`` |
| ``tinyint`` / ``tinyint unsigned`` | ``Int8`` / ``UInt8`` |
| ``smallint`` / ``smallint unsigned`` | ``Int16`` / ``UInt16`` |
| ``int`` or ``integer`` / ``int unsigned`` or ``integer unsigned`` | ``Int32`` / ``UInt32`` |
| ``bigint`` / ``bigint unsigned`` | ``Int64`` / ``UInt64`` |
| ``float`` | ``Float32`` |
| ``double`` | ``Float64`` |
| ``decimal(precision, scale)`` | ``Decimal128`` |
| ``date`` | ``Date32`` |
| ``timestamp`` | ``Timestamp`` [^1] |
| ``string`` | ``Utf8`` |
| ``binary`` | ``Binary`` |
| SQL type | Arrow type |
| --------------------------------------------------------- | ------------------ |
| `boolean` | `Boolean` |
| `tinyint` / `tinyint unsigned` | `Int8` / `UInt8` |
| `smallint` / `smallint unsigned` | `Int16` / `UInt16` |
| `int` or `integer` / `int unsigned` or `integer unsigned` | `Int32` / `UInt32` |
| `bigint` / `bigint unsigned` | `Int64` / `UInt64` |
| `float` | `Float32` |
| `double` | `Float64` |
| `decimal(precision, scale)` | `Decimal128` |
| `date` | `Date32` |
| `timestamp` | `Timestamp` [^1] |
| `string` | `Utf8` |
| `binary` | `Binary` |
[^1]: See precision mapping in previous table.
## Filtering without Vector Search
You can also filter your data without search.
=== "Python"
```python
tbl.search().where("id = 10").limit(10).to_arrow()
```
```python
tbl.search().where("id = 10").limit(10).to_arrow()
```
=== "JavaScript"
```javascript
await tbl.where('id = 10').limit(10).execute()
```
!!! warning
If your table is large, this could potentially return a very large
amount of data. Please be sure to use a `limit` clause unless
you're sure you want to return the whole result set.
```javascript
--8<---- "docs/src/sql_legacy.ts:sql_search"
```
!!!warning "If your table is large, this could potentially return a very large amount of data. Please be sure to use a `limit` clause unless you're sure you want to return the whole result set."

38
docs/src/sql_legacy.ts Normal file
View File

@@ -0,0 +1,38 @@
import * as vectordb from "vectordb";
(async () => {
const db = await vectordb.connect("data/sample-lancedb");
let data = [];
for (let i = 0; i < 10_000; i++) {
data.push({
vector: Array(1536).fill(i),
id: i,
item: `item ${i}`,
strId: `${i}`,
});
}
const tbl = await db.createTable("myVectors", data);
// --8<-- [start:search]
let result = await tbl
.search(Array(1536).fill(0.5))
.limit(1)
.filter("id = 10")
.prefilter(true)
.execute();
// --8<-- [end:search]
// --8<-- [start:vec_search]
await tbl
.search(Array(1536).fill(0))
.where("(item IN ('item 0', 'item 2')) AND (id > 10)")
.execute();
// --8<-- [end:vec_search]
// --8<-- [start:sql_search]
await tbl.filter("id = 10").limit(10).execute();
// --8<-- [end:sql_search]
console.log("SQL search: done");
})();

View File

@@ -1,55 +0,0 @@
const glob = require("glob");
const fs = require("fs");
const path = require("path");
const globString = "../src/**/*.md";
const excludedGlobs = [
"../src/fts.md",
"../src/embedding.md",
"../src/examples/*.md",
"../src/guides/tables.md",
"../src/guides/storage.md",
"../src/embeddings/*.md",
];
const nodePrefix = "javascript";
const nodeFile = ".js";
const nodeFolder = "node";
const asyncPrefix = "(async () => {\n";
const asyncSuffix = "})();";
function* yieldLines(lines, prefix, suffix) {
let inCodeBlock = false;
for (const line of lines) {
if (line.trim().startsWith(prefix + nodePrefix)) {
inCodeBlock = true;
} else if (inCodeBlock && line.trim().startsWith(suffix)) {
inCodeBlock = false;
yield "\n";
} else if (inCodeBlock) {
yield line;
}
}
}
const files = glob.sync(globString, { recursive: true });
const excludedFiles = glob.sync(excludedGlobs, { recursive: true });
for (const file of files.filter((file) => !excludedFiles.includes(file))) {
const lines = [];
const data = fs.readFileSync(file, "utf-8");
const fileLines = data.split("\n");
for (const line of yieldLines(fileLines, "```", "```")) {
lines.push(line);
}
if (lines.length > 0) {
const fileName = path.basename(file, ".md");
const outPath = path.join(nodeFolder, fileName, `${fileName}${nodeFile}`);
console.log(outPath)
fs.mkdirSync(path.dirname(outPath), { recursive: true });
fs.writeFileSync(outPath, asyncPrefix + "\n" + lines.join("\n") + asyncSuffix);
}
}

View File

@@ -14,6 +14,7 @@ excluded_globs = [
"../src/concepts/*.md",
"../src/ann_indexes.md",
"../src/basic.md",
"../src/hybrid_search/hybrid_search.md",
]
python_prefix = "py"
@@ -48,6 +49,7 @@ def yield_lines(lines: Iterator[str], prefix: str, suffix: str):
if not skip_test:
yield line[strip_length:]
for file in filter(lambda file: file not in excluded_files, files):
with open(file, "r") as f:
lines = list(yield_lines(iter(f), "```", "```"))

View File

@@ -1,13 +0,0 @@
{
"name": "lancedb-docs-test",
"version": "1.0.0",
"description": "",
"author": "",
"license": "ISC",
"dependencies": {
"fs": "^0.0.1-security",
"glob": "^10.2.7",
"path": "^0.12.7",
"vectordb": "https://gitpkg.now.sh/lancedb/lancedb/node?main"
}
}

17
docs/tsconfig.json Normal file
View File

@@ -0,0 +1,17 @@
{
"include": [
"src/*.ts",
],
"compilerOptions": {
"target": "es2022",
"module": "nodenext",
"declaration": true,
"outDir": "./dist",
"strict": true,
"allowJs": true,
"resolveJsonModule": true,
},
"exclude": [
"./dist/*",
]
}

74
node/package-lock.json generated
View File

@@ -1,12 +1,12 @@
{
"name": "vectordb",
"version": "0.4.4",
"version": "0.4.11",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "vectordb",
"version": "0.4.4",
"version": "0.4.11",
"cpu": [
"x64",
"arm64"
@@ -53,11 +53,11 @@
"uuid": "^9.0.0"
},
"optionalDependencies": {
"@lancedb/vectordb-darwin-arm64": "0.4.4",
"@lancedb/vectordb-darwin-x64": "0.4.4",
"@lancedb/vectordb-linux-arm64-gnu": "0.4.4",
"@lancedb/vectordb-linux-x64-gnu": "0.4.4",
"@lancedb/vectordb-win32-x64-msvc": "0.4.4"
"@lancedb/vectordb-darwin-arm64": "0.4.11",
"@lancedb/vectordb-darwin-x64": "0.4.11",
"@lancedb/vectordb-linux-arm64-gnu": "0.4.11",
"@lancedb/vectordb-linux-x64-gnu": "0.4.11",
"@lancedb/vectordb-win32-x64-msvc": "0.4.11"
}
},
"node_modules/@75lb/deep-merge": {
@@ -328,6 +328,66 @@
"@jridgewell/sourcemap-codec": "^1.4.10"
}
},
"node_modules/@lancedb/vectordb-darwin-arm64": {
"version": "0.4.11",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-darwin-arm64/-/vectordb-darwin-arm64-0.4.11.tgz",
"integrity": "sha512-JDOKmFnuJPFkA7ZmrzBJolROwSjWr7yMvAbi40uLBc25YbbVezodd30u2EFtIwWwtk1GqNYRZ49FZOElKYeC/Q==",
"cpu": [
"arm64"
],
"optional": true,
"os": [
"darwin"
]
},
"node_modules/@lancedb/vectordb-darwin-x64": {
"version": "0.4.11",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-darwin-x64/-/vectordb-darwin-x64-0.4.11.tgz",
"integrity": "sha512-iy6r+8tp2v1EFgJV52jusXtxgO6NY6SkpOdX41xPqN2mQWMkfUAR9Xtks1mgknjPOIKH4MRc8ZS0jcW/UWmilQ==",
"cpu": [
"x64"
],
"optional": true,
"os": [
"darwin"
]
},
"node_modules/@lancedb/vectordb-linux-arm64-gnu": {
"version": "0.4.11",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-linux-arm64-gnu/-/vectordb-linux-arm64-gnu-0.4.11.tgz",
"integrity": "sha512-5K6IVcTMuH0SZBjlqB5Gg39WC889FpTwIWKufxzQMMXrzxo5J3lKUHVoR28RRlNhDF2d9kZXBEyCpIfDFsV9iQ==",
"cpu": [
"arm64"
],
"optional": true,
"os": [
"linux"
]
},
"node_modules/@lancedb/vectordb-linux-x64-gnu": {
"version": "0.4.11",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-linux-x64-gnu/-/vectordb-linux-x64-gnu-0.4.11.tgz",
"integrity": "sha512-hF9ZChsdqKqqnivOzd9mE7lC3PmhZadXtwThi2RrsPiOLoEaGDfmr6Ni3amVQnB3bR8YEJtTxdQxe0NC4uW/8g==",
"cpu": [
"x64"
],
"optional": true,
"os": [
"linux"
]
},
"node_modules/@lancedb/vectordb-win32-x64-msvc": {
"version": "0.4.11",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-win32-x64-msvc/-/vectordb-win32-x64-msvc-0.4.11.tgz",
"integrity": "sha512-0+9ut1ccKoqIyGxsVixwx3771Z+DXpl5WfSmOeA8kf3v3jlOg2H+0YUahiXLDid2ju+yeLPrAUYm7A1gKHVhew==",
"cpu": [
"x64"
],
"optional": true,
"os": [
"win32"
]
},
"node_modules/@neon-rs/cli": {
"version": "0.0.160",
"resolved": "https://registry.npmjs.org/@neon-rs/cli/-/cli-0.0.160.tgz",

View File

@@ -1,12 +1,12 @@
{
"name": "vectordb",
"version": "0.4.4",
"version": "0.4.11",
"description": " Serverless, low-latency vector database for AI applications",
"main": "dist/index.js",
"types": "dist/index.d.ts",
"scripts": {
"tsc": "tsc -b",
"build": "cargo-cp-artifact --artifact cdylib vectordb-node index.node -- cargo build --message-format=json && tsc -b",
"build": "npm run tsc && cargo-cp-artifact --artifact cdylib lancedb-node index.node -- cargo build --message-format=json",
"build-release": "npm run build -- --release",
"test": "npm run tsc && mocha -recursive dist/test",
"integration-test": "npm run tsc && mocha -recursive dist/integration_test",
@@ -17,7 +17,11 @@
},
"repository": {
"type": "git",
"url": "https://github.com/lancedb/lancedb/node"
"url": "https://github.com/lancedb/lancedb.git"
},
"homepage": "https://lancedb.github.io/lancedb/",
"bugs": {
"url": "https://github.com/lancedb/lancedb/issues"
},
"keywords": [
"data-format",
@@ -57,11 +61,13 @@
"uuid": "^9.0.0"
},
"dependencies": {
"@apache-arrow/ts": "^14.0.2",
"@neon-rs/load": "^0.0.74",
"apache-arrow": "^14.0.2",
"axios": "^1.4.0"
},
"peerDependencies": {
"@apache-arrow/ts": "^14.0.2",
"apache-arrow": "^14.0.2"
},
"os": [
"darwin",
"linux",
@@ -81,10 +87,10 @@
}
},
"optionalDependencies": {
"@lancedb/vectordb-darwin-arm64": "0.4.4",
"@lancedb/vectordb-darwin-x64": "0.4.4",
"@lancedb/vectordb-linux-arm64-gnu": "0.4.4",
"@lancedb/vectordb-linux-x64-gnu": "0.4.4",
"@lancedb/vectordb-win32-x64-msvc": "0.4.4"
"@lancedb/vectordb-darwin-arm64": "0.4.11",
"@lancedb/vectordb-darwin-x64": "0.4.11",
"@lancedb/vectordb-linux-arm64-gnu": "0.4.11",
"@lancedb/vectordb-linux-x64-gnu": "0.4.11",
"@lancedb/vectordb-win32-x64-msvc": "0.4.11"
}
}
}

View File

@@ -14,8 +14,6 @@
import {
Field,
type FixedSizeListBuilder,
Float32,
makeBuilder,
RecordBatchFileWriter,
Utf8,
@@ -26,14 +24,19 @@ import {
Table as ArrowTable,
RecordBatchStreamWriter,
List,
Float64,
RecordBatch,
makeData,
Struct,
type Float
type Float,
DataType,
Binary,
Float32
} from 'apache-arrow'
import { type EmbeddingFunction } from './index'
/*
* Options to control how a column should be converted to a vector array
*/
export class VectorColumnOptions {
/** Vector column type. */
type: Float = new Float32()
@@ -45,14 +48,50 @@ export class VectorColumnOptions {
/** Options to control the makeArrowTable call. */
export class MakeArrowTableOptions {
/** Provided schema. */
/*
* Schema of the data.
*
* If this is not provided then the data type will be inferred from the
* JS type. Integer numbers will become int64, floating point numbers
* will become float64 and arrays will become variable sized lists with
* the data type inferred from the first element in the array.
*
* The schema must be specified if there are no records (e.g. to make
* an empty table)
*/
schema?: Schema
/** Vector columns */
/*
* Mapping from vector column name to expected type
*
* Lance expects vector columns to be fixed size list arrays (i.e. tensors)
* However, `makeArrowTable` will not infer this by default (it creates
* variable size list arrays). This field can be used to indicate that a column
* should be treated as a vector column and converted to a fixed size list.
*
* The keys should be the names of the vector columns. The value specifies the
* expected data type of the vector columns.
*
* If `schema` is provided then this field is ignored.
*
* By default, the column named "vector" will be assumed to be a float32
* vector column.
*/
vectorColumns: Record<string, VectorColumnOptions> = {
vector: new VectorColumnOptions()
}
/**
* If true then string columns will be encoded with dictionary encoding
*
* Set this to true if your string columns tend to repeat the same values
* often. For more precise control use the `schema` property to specify the
* data type for individual columns.
*
* If `schema` is provided then this property is ignored.
*/
dictionaryEncodeStrings: boolean = false
constructor (values?: Partial<MakeArrowTableOptions>) {
Object.assign(this, values)
}
@@ -62,8 +101,29 @@ export class MakeArrowTableOptions {
* An enhanced version of the {@link makeTable} function from Apache Arrow
* that supports nested fields and embeddings columns.
*
* This function converts an array of Record<String, any> (row-major JS objects)
* to an Arrow Table (a columnar structure)
*
* Note that it currently does not support nulls.
*
* If a schema is provided then it will be used to determine the resulting array
* types. Fields will also be reordered to fit the order defined by the schema.
*
* If a schema is not provided then the types will be inferred and the field order
* will be controlled by the order of properties in the first record.
*
* If the input is empty then a schema must be provided to create an empty table.
*
* When a schema is not specified then data types will be inferred. The inference
* rules are as follows:
*
* - boolean => Bool
* - number => Float64
* - String => Utf8
* - Buffer => Binary
* - Record<String, any> => Struct
* - Array<any> => List
*
* @param data input data
* @param options options to control the makeArrowTable call.
*
@@ -86,8 +146,10 @@ export class MakeArrowTableOptions {
* ], { schema });
* ```
*
* It guesses the vector columns if the schema is not provided. For example,
* by default it assumes that the column named `vector` is a vector column.
* By default it assumes that the column named `vector` is a vector column
* and it will be converted into a fixed size list array of type float32.
* The `vectorColumns` option can be used to support other vector column
* names and data types.
*
* ```ts
*
@@ -134,211 +196,304 @@ export function makeArrowTable (
data: Array<Record<string, any>>,
options?: Partial<MakeArrowTableOptions>
): ArrowTable {
if (data.length === 0) {
throw new Error('At least one record needs to be provided')
if (data.length === 0 && (options?.schema === undefined || options?.schema === null)) {
throw new Error('At least one record or a schema needs to be provided')
}
const opt = new MakeArrowTableOptions(options !== undefined ? options : {})
const columns: Record<string, Vector> = {}
// TODO: sample dataset to find missing columns
const columnNames = Object.keys(data[0])
// Prefer the field ordering of the schema, if present
const columnNames = ((options?.schema) != null) ? (options?.schema?.names as string[]) : Object.keys(data[0])
for (const colName of columnNames) {
const values = data.map((datum) => datum[colName])
let vector: Vector
if (data.length !== 0 && !Object.prototype.hasOwnProperty.call(data[0], colName)) {
// The field is present in the schema, but not in the data, skip it
continue
}
// Extract a single column from the records (transpose from row-major to col-major)
let values = data.map((datum) => datum[colName])
// By default (type === undefined) arrow will infer the type from the JS type
let type
if (opt.schema !== undefined) {
// Explicit schema is provided, highest priority
vector = vectorFromArray(
values,
opt.schema?.fields.filter((f) => f.name === colName)[0]?.type
)
// If there is a schema provided, then use that for the type instead
type = opt.schema?.fields.filter((f) => f.name === colName)[0]?.type
if (DataType.isInt(type) && type.bitWidth === 64) {
// wrap in BigInt to avoid bug: https://github.com/apache/arrow/issues/40051
values = values.map((v) => {
if (v === null) {
return v
}
return BigInt(v)
})
}
} else {
// Otherwise, check to see if this column is one of the vector columns
// defined by opt.vectorColumns and, if so, use the fixed size list type
const vectorColumnOptions = opt.vectorColumns[colName]
if (vectorColumnOptions !== undefined) {
const fslType = new FixedSizeList(
values[0].length,
new Field('item', vectorColumnOptions.type, false)
)
vector = vectorFromArray(values, fslType)
} else {
// Normal case
vector = vectorFromArray(values)
type = newVectorType(values[0].length, vectorColumnOptions.type)
}
}
columns[colName] = vector
try {
// Convert an Array of JS values to an arrow vector
columns[colName] = makeVector(values, type, opt.dictionaryEncodeStrings)
} catch (error: unknown) {
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
throw Error(`Could not convert column "${colName}" to Arrow: ${error}`)
}
}
return new ArrowTable(columns)
if (opt.schema != null) {
// `new ArrowTable(columns)` infers a schema which may sometimes have
// incorrect nullability (it assumes nullable=true if there are 0 rows)
//
// `new ArrowTable(schema, columns)` will also fail because it will create a
// batch with an inferred schema and then complain that the batch schema
// does not match the provided schema.
//
// To work around this we first create a table with the wrong schema and
// then patch the schema of the batches so we can use
// `new ArrowTable(schema, batches)` which does not do any schema inference
const firstTable = new ArrowTable(columns)
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
const batchesFixed = firstTable.batches.map(batch => new RecordBatch(opt.schema!, batch.data))
return new ArrowTable(opt.schema, batchesFixed)
} else {
return new ArrowTable(columns)
}
}
// Converts an Array of records into an Arrow Table, optionally applying an embeddings function to it.
/**
* Create an empty Arrow table with the provided schema
*/
export function makeEmptyTable (schema: Schema): ArrowTable {
return makeArrowTable([], { schema })
}
// Helper function to convert Array<Array<any>> to a variable sized list array
function makeListVector (lists: any[][]): Vector<any> {
if (lists.length === 0 || lists[0].length === 0) {
throw Error('Cannot infer list vector from empty array or empty list')
}
const sampleList = lists[0]
let inferredType
try {
const sampleVector = makeVector(sampleList)
inferredType = sampleVector.type
} catch (error: unknown) {
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
throw Error(`Cannot infer list vector. Cannot infer inner type: ${error}`)
}
const listBuilder = makeBuilder({
type: new List(new Field('item', inferredType, true))
})
for (const list of lists) {
listBuilder.append(list)
}
return listBuilder.finish().toVector()
}
// Helper function to convert an Array of JS values to an Arrow Vector
function makeVector (values: any[], type?: DataType, stringAsDictionary?: boolean): Vector<any> {
if (type !== undefined) {
// No need for inference, let Arrow create it
return vectorFromArray(values, type)
}
if (values.length === 0) {
throw Error('makeVector requires at least one value or the type must be specfied')
}
const sampleValue = values.find(val => val !== null && val !== undefined)
if (sampleValue === undefined) {
throw Error('makeVector cannot infer the type if all values are null or undefined')
}
if (Array.isArray(sampleValue)) {
// Default Arrow inference doesn't handle list types
return makeListVector(values)
} else if (Buffer.isBuffer(sampleValue)) {
// Default Arrow inference doesn't handle Buffer
return vectorFromArray(values, new Binary())
} else if (!(stringAsDictionary ?? false) && (typeof sampleValue === 'string' || sampleValue instanceof String)) {
// If the type is string then don't use Arrow's default inference unless dictionaries are requested
// because it will always use dictionary encoding for strings
return vectorFromArray(values, new Utf8())
} else {
// Convert a JS array of values to an arrow vector
return vectorFromArray(values)
}
}
async function applyEmbeddings<T> (table: ArrowTable, embeddings?: EmbeddingFunction<T>, schema?: Schema): Promise<ArrowTable> {
if (embeddings == null) {
return table
}
// Convert from ArrowTable to Record<String, Vector>
const colEntries = [...Array(table.numCols).keys()].map((_, idx) => {
const name = table.schema.fields[idx].name
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
const vec = table.getChildAt(idx)!
return [name, vec]
})
const newColumns = Object.fromEntries(colEntries)
const sourceColumn = newColumns[embeddings.sourceColumn]
const destColumn = embeddings.destColumn ?? 'vector'
const innerDestType = embeddings.embeddingDataType ?? new Float32()
if (sourceColumn === undefined) {
throw new Error(`Cannot apply embedding function because the source column '${embeddings.sourceColumn}' was not present in the data`)
}
if (table.numRows === 0) {
if (Object.prototype.hasOwnProperty.call(newColumns, destColumn)) {
// We have an empty table and it already has the embedding column so no work needs to be done
// Note: we don't return an error like we did below because this is a common occurrence. For example,
// if we call convertToTable with 0 records and a schema that includes the embedding
return table
}
if (embeddings.embeddingDimension !== undefined) {
const destType = newVectorType(embeddings.embeddingDimension, innerDestType)
newColumns[destColumn] = makeVector([], destType)
} else if (schema != null) {
const destField = schema.fields.find(f => f.name === destColumn)
if (destField != null) {
newColumns[destColumn] = makeVector([], destField.type)
} else {
throw new Error(`Attempt to apply embeddings to an empty table failed because schema was missing embedding column '${destColumn}'`)
}
} else {
throw new Error('Attempt to apply embeddings to an empty table when the embeddings function does not specify `embeddingDimension`')
}
} else {
if (Object.prototype.hasOwnProperty.call(newColumns, destColumn)) {
throw new Error(`Attempt to apply embeddings to table failed because column ${destColumn} already existed`)
}
if (table.batches.length > 1) {
throw new Error('Internal error: `makeArrowTable` unexpectedly created a table with more than one batch')
}
const values = sourceColumn.toArray()
const vectors = await embeddings.embed(values as T[])
if (vectors.length !== values.length) {
throw new Error('Embedding function did not return an embedding for each input element')
}
const destType = newVectorType(vectors[0].length, innerDestType)
newColumns[destColumn] = makeVector(vectors, destType)
}
const newTable = new ArrowTable(newColumns)
if (schema != null) {
if (schema.fields.find(f => f.name === destColumn) === undefined) {
throw new Error(`When using embedding functions and specifying a schema the schema should include the embedding column but the column ${destColumn} was missing`)
}
return alignTable(newTable, schema)
}
return newTable
}
/*
* Convert an Array of records into an Arrow Table, optionally applying an
* embeddings function to it.
*
* This function calls `makeArrowTable` first to create the Arrow Table.
* Any provided `makeTableOptions` (e.g. a schema) will be passed on to
* that call.
*
* The embedding function will be passed a column of values (based on the
* `sourceColumn` of the embedding function) and expects to receive back
* number[][] which will be converted into a fixed size list column. By
* default this will be a fixed size list of Float32 but that can be
* customized by the `embeddingDataType` property of the embedding function.
*
* If a schema is provided in `makeTableOptions` then it should include the
* embedding columns. If no schema is provded then embedding columns will
* be placed at the end of the table, after all of the input columns.
*/
export async function convertToTable<T> (
data: Array<Record<string, unknown>>,
embeddings?: EmbeddingFunction<T>
embeddings?: EmbeddingFunction<T>,
makeTableOptions?: Partial<MakeArrowTableOptions>
): Promise<ArrowTable> {
if (data.length === 0) {
throw new Error('At least one record needs to be provided')
}
const columns = Object.keys(data[0])
const records: Record<string, Vector> = {}
for (const columnsKey of columns) {
if (columnsKey === 'vector') {
const vectorSize = (data[0].vector as any[]).length
const listBuilder = newVectorBuilder(vectorSize)
for (const datum of data) {
if ((datum[columnsKey] as any[]).length !== vectorSize) {
throw new Error(`Invalid vector size, expected ${vectorSize}`)
}
listBuilder.append(datum[columnsKey])
}
records[columnsKey] = listBuilder.finish().toVector()
} else {
const values = []
for (const datum of data) {
values.push(datum[columnsKey])
}
if (columnsKey === embeddings?.sourceColumn) {
const vectors = await embeddings.embed(values as T[])
records.vector = vectorFromArray(
vectors,
newVectorType(vectors[0].length)
)
}
if (typeof values[0] === 'string') {
// `vectorFromArray` converts strings into dictionary vectors, forcing it back to a string column
records[columnsKey] = vectorFromArray(values, new Utf8())
} else if (Array.isArray(values[0])) {
const elementType = getElementType(values[0])
let innerType
if (elementType === 'string') {
innerType = new Utf8()
} else if (elementType === 'number') {
innerType = new Float64()
} else {
// TODO: pass in schema if it exists, else keep going to the next element
throw new Error(`Unsupported array element type ${elementType}`)
}
const listBuilder = makeBuilder({
type: new List(new Field('item', innerType, true))
})
for (const value of values) {
listBuilder.append(value)
}
records[columnsKey] = listBuilder.finish().toVector()
} else {
// TODO if this is a struct field then recursively align the subfields
records[columnsKey] = vectorFromArray(values)
}
}
}
return new ArrowTable(records)
}
function getElementType (arr: any[]): string {
if (arr.length === 0) {
return 'undefined'
}
return typeof arr[0]
}
// Creates a new Arrow ListBuilder that stores a Vector column
function newVectorBuilder (dim: number): FixedSizeListBuilder<Float32> {
return makeBuilder({
type: newVectorType(dim)
})
const table = makeArrowTable(data, makeTableOptions)
return await applyEmbeddings(table, embeddings, makeTableOptions?.schema)
}
// Creates the Arrow Type for a Vector column with dimension `dim`
function newVectorType (dim: number): FixedSizeList<Float32> {
function newVectorType <T extends Float> (dim: number, innerType: T): FixedSizeList<T> {
// Somewhere we always default to have the elements nullable, so we need to set it to true
// otherwise we often get schema mismatches because the stored data always has schema with nullable elements
const children = new Field<Float32>('item', new Float32(), true)
const children = new Field<T>('item', innerType, true)
return new FixedSizeList(dim, children)
}
// Converts an Array of records into Arrow IPC format
/**
* Serialize an Array of records into a buffer using the Arrow IPC File serialization
*
* This function will call `convertToTable` and pass on `embeddings` and `schema`
*
* `schema` is required if data is empty
*/
export async function fromRecordsToBuffer<T> (
data: Array<Record<string, unknown>>,
embeddings?: EmbeddingFunction<T>,
schema?: Schema
): Promise<Buffer> {
let table = await convertToTable(data, embeddings)
if (schema !== undefined) {
table = alignTable(table, schema)
}
const table = await convertToTable(data, embeddings, { schema })
const writer = RecordBatchFileWriter.writeAll(table)
return Buffer.from(await writer.toUint8Array())
}
// Converts an Array of records into Arrow IPC stream format
/**
* Serialize an Array of records into a buffer using the Arrow IPC Stream serialization
*
* This function will call `convertToTable` and pass on `embeddings` and `schema`
*
* `schema` is required if data is empty
*/
export async function fromRecordsToStreamBuffer<T> (
data: Array<Record<string, unknown>>,
embeddings?: EmbeddingFunction<T>,
schema?: Schema
): Promise<Buffer> {
let table = await convertToTable(data, embeddings)
if (schema !== undefined) {
table = alignTable(table, schema)
}
const table = await convertToTable(data, embeddings, { schema })
const writer = RecordBatchStreamWriter.writeAll(table)
return Buffer.from(await writer.toUint8Array())
}
// Converts an Arrow Table into Arrow IPC format
/**
* Serialize an Arrow Table into a buffer using the Arrow IPC File serialization
*
* This function will apply `embeddings` to the table in a manner similar to
* `convertToTable`.
*
* `schema` is required if the table is empty
*/
export async function fromTableToBuffer<T> (
table: ArrowTable,
embeddings?: EmbeddingFunction<T>,
schema?: Schema
): Promise<Buffer> {
if (embeddings !== undefined) {
const source = table.getChild(embeddings.sourceColumn)
if (source === null) {
throw new Error(
`The embedding source column ${embeddings.sourceColumn} was not found in the Arrow Table`
)
}
const vectors = await embeddings.embed(source.toArray() as T[])
const column = vectorFromArray(vectors, newVectorType(vectors[0].length))
table = table.assign(new ArrowTable({ vector: column }))
}
if (schema !== undefined) {
table = alignTable(table, schema)
}
const writer = RecordBatchFileWriter.writeAll(table)
const tableWithEmbeddings = await applyEmbeddings(table, embeddings, schema)
const writer = RecordBatchFileWriter.writeAll(tableWithEmbeddings)
return Buffer.from(await writer.toUint8Array())
}
// Converts an Arrow Table into Arrow IPC stream format
/**
* Serialize an Arrow Table into a buffer using the Arrow IPC Stream serialization
*
* This function will apply `embeddings` to the table in a manner similar to
* `convertToTable`.
*
* `schema` is required if the table is empty
*/
export async function fromTableToStreamBuffer<T> (
table: ArrowTable,
embeddings?: EmbeddingFunction<T>,
schema?: Schema
): Promise<Buffer> {
if (embeddings !== undefined) {
const source = table.getChild(embeddings.sourceColumn)
if (source === null) {
throw new Error(
`The embedding source column ${embeddings.sourceColumn} was not found in the Arrow Table`
)
}
const vectors = await embeddings.embed(source.toArray() as T[])
const column = vectorFromArray(vectors, newVectorType(vectors[0].length))
table = table.assign(new ArrowTable({ vector: column }))
}
if (schema !== undefined) {
table = alignTable(table, schema)
}
const writer = RecordBatchStreamWriter.writeAll(table)
const tableWithEmbeddings = await applyEmbeddings(table, embeddings, schema)
const writer = RecordBatchStreamWriter.writeAll(tableWithEmbeddings)
return Buffer.from(await writer.toUint8Array())
}

View File

@@ -12,18 +12,53 @@
// See the License for the specific language governing permissions and
// limitations under the License.
import { type Float } from 'apache-arrow'
/**
* An embedding function that automatically creates vector representation for a given column.
*/
export interface EmbeddingFunction<T> {
/**
* The name of the column that will be used as input for the Embedding Function.
*/
* The name of the column that will be used as input for the Embedding Function.
*/
sourceColumn: string
/**
* Creates a vector representation for the given values.
*/
* The data type of the embedding
*
* The embedding function should return `number`. This will be converted into
* an Arrow float array. By default this will be Float32 but this property can
* be used to control the conversion.
*/
embeddingDataType?: Float
/**
* The dimension of the embedding
*
* This is optional, normally this can be determined by looking at the results of
* `embed`. If this is not specified, and there is an attempt to apply the embedding
* to an empty table, then that process will fail.
*/
embeddingDimension?: number
/**
* The name of the column that will contain the embedding
*
* By default this is "vector"
*/
destColumn?: string
/**
* Should the source column be excluded from the resulting table
*
* By default the source column is included. Set this to true and
* only the embedding will be stored.
*/
excludeSource?: boolean
/**
* Creates a vector representation for the given values.
*/
embed: (data: T[]) => Promise<number[][]>
}

View File

@@ -1,6 +1,6 @@
// Copyright 2023 Lance Developers.
//
// Licensed under the Apache License, Version 2.0 (the "License")
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
@@ -37,19 +37,22 @@ const {
tableCountRows,
tableDelete,
tableUpdate,
tableMergeInsert,
tableCleanupOldVersions,
tableCompactFiles,
tableListIndices,
tableIndexStats,
tableSchema
tableSchema,
tableAddColumns,
tableAlterColumns,
tableDropColumns
// eslint-disable-next-line @typescript-eslint/no-var-requires
} = require('../native.js')
export { Query }
export type { EmbeddingFunction }
export { OpenAIEmbeddingFunction } from './embedding/openai'
export { makeArrowTable, type MakeArrowTableOptions } from './arrow'
export { RemoteConnection, RemoteTable } from './remote'
export { convertToTable, makeArrowTable, type MakeArrowTableOptions } from './arrow'
const defaultAwsRegion = 'us-west-2'
@@ -96,6 +99,19 @@ export interface ConnectionOptions {
* This is useful for local testing.
*/
hostOverride?: string
/**
* (For LanceDB OSS only): The interval, in seconds, at which to check for
* updates to the table from other processes. If None, then consistency is not
* checked. For performance reasons, this is the default. For strong
* consistency, set this to zero seconds. Then every read will check for
* updates from other processes. As a compromise, you can set this to a
* non-zero value for eventual consistency. If more than that interval
* has passed since the last check, then the table will be checked for updates.
* Note: this consistency only applies to read operations. Write operations are
* always consistent.
*/
readConsistencyInterval?: number
}
function getAwsArgs (opts: ConnectionOptions): any[] {
@@ -164,6 +180,7 @@ export async function connect (
{
uri: '',
awsCredentials: undefined,
awsRegion: defaultAwsRegion,
apiKey: undefined,
region: defaultAwsRegion
},
@@ -175,7 +192,14 @@ export async function connect (
// Remote connection
return new RemoteConnection(opts)
}
const db = await databaseNew(opts.uri)
const db = await databaseNew(
opts.uri,
opts.awsCredentials?.accessKeyId,
opts.awsCredentials?.secretKey,
opts.awsCredentials?.sessionToken,
opts.awsRegion,
opts.readConsistencyInterval
)
return new LocalConnection(db, opts)
}
@@ -317,6 +341,7 @@ export interface Table<T = number[]> {
*
* @param column The column to index
* @param replace If false, fail if an index already exists on the column
* it is always set to true for remote connections
*
* Scalar indices, like vector indices, can be used to speed up scans. A scalar
* index can speed up scans that contain filter expressions on the indexed column.
@@ -360,12 +385,12 @@ export interface Table<T = number[]> {
* await table.createScalarIndex('my_col')
* ```
*/
createScalarIndex: (column: string, replace: boolean) => Promise<void>
createScalarIndex: (column: string, replace?: boolean) => Promise<void>
/**
* Returns the number of rows in this table.
*/
countRows: () => Promise<number>
countRows: (filter?: string) => Promise<number>
/**
* Delete rows from this table.
@@ -434,6 +459,38 @@ export interface Table<T = number[]> {
*/
update: (args: UpdateArgs | UpdateSqlArgs) => Promise<void>
/**
* Runs a "merge insert" operation on the table
*
* This operation can add rows, update rows, and remove rows all in a single
* transaction. It is a very generic tool that can be used to create
* behaviors like "insert if not exists", "update or insert (i.e. upsert)",
* or even replace a portion of existing data with new data (e.g. replace
* all data where month="january")
*
* The merge insert operation works by combining new data from a
* **source table** with existing data in a **target table** by using a
* join. There are three categories of records.
*
* "Matched" records are records that exist in both the source table and
* the target table. "Not matched" records exist only in the source table
* (e.g. these are new data) "Not matched by source" records exist only
* in the target table (this is old data)
*
* The MergeInsertArgs can be used to customize what should happen for
* each category of data.
*
* Please note that the data may appear to be reordered as part of this
* operation. This is because updated rows will be deleted from the
* dataset and then reinserted at the end with the new values.
*
* @param on a column to join on. This is how records from the source
* table and target table are matched.
* @param data the new data to insert
* @param args parameters controlling how the operation should behave
*/
mergeInsert: (on: string, data: Array<Record<string, unknown>> | ArrowTable, args: MergeInsertArgs) => Promise<void>
/**
* List the indicies on this table.
*/
@@ -444,7 +501,62 @@ export interface Table<T = number[]> {
*/
indexStats: (indexUuid: string) => Promise<IndexStats>
filter(value: string): Query<T>
schema: Promise<Schema>
// TODO: Support BatchUDF
/**
* Add new columns with defined values.
*
* @param 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.
*/
addColumns(newColumnTransforms: Array<{ name: string, valueSql: string }>): Promise<void>
/**
* Alter the name or nullability of columns.
*
* @param columnAlterations One or more alterations to apply to columns.
*/
alterColumns(columnAlterations: ColumnAlteration[]): Promise<void>
/**
* Drop one or more columns from the dataset
*
* This is a metadata-only operation and does not remove the data from the
* underlying storage. In order to remove the data, you must subsequently
* call ``compact_files`` to rewrite the data without the removed columns and
* then call ``cleanup_files`` to remove the old files.
*
* @param columnNames The names of the columns to drop. These can be nested
* column references (e.g. "a.b.c") or top-level column
* names (e.g. "a").
*/
dropColumns(columnNames: string[]): Promise<void>
}
/**
* A definition of a column alteration. The alteration changes the column at
* `path` to have the new name `name`, to be nullable if `nullable` is true,
* and to have the data type `data_type`. At least one of `rename` or `nullable`
* must be provided.
*/
export interface ColumnAlteration {
/**
* The path to the column to alter. This is a dot-separated path to the column.
* If it is a top-level column then it is just the name of the column. If it is
* a nested column then it is the path to the column, e.g. "a.b.c" for a column
* `c` nested inside a column `b` nested inside a column `a`.
*/
path: string
rename?: string
/**
* Set the new nullability. Note that a nullable column cannot be made non-nullable.
*/
nullable?: boolean
}
export interface UpdateArgs {
@@ -475,6 +587,47 @@ export interface UpdateSqlArgs {
valuesSql: Record<string, string>
}
export interface MergeInsertArgs {
/**
* If true then rows that exist in both the source table (new data) and
* the target table (old data) will be updated, replacing the old row
* with the corresponding matching row.
*
* If there are multiple matches then the behavior is undefined.
* Currently this causes multiple copies of the row to be created
* but that behavior is subject to change.
*
* Optionally, a filter can be specified. This should be an SQL
* filter where fields with the prefix "target." refer to fields
* in the target table (old data) and fields with the prefix
* "source." refer to fields in the source table (new data). For
* example, the filter "target.lastUpdated < source.lastUpdated" will
* only update matched rows when the incoming `lastUpdated` value is
* newer.
*
* Rows that do not match the filter will not be updated. Rows that
* do not match the filter do become "not matched" rows.
*/
whenMatchedUpdateAll?: string | boolean
/**
* If true then rows that exist only in the source table (new data)
* will be inserted into the target table.
*/
whenNotMatchedInsertAll?: boolean
/**
* If true then rows that exist only in the target table (old data)
* will be deleted.
*
* If this is a string then it will be treated as an SQL filter and
* only rows that both do not match any row in the source table and
* match the given filter will be deleted.
*
* This can be used to replace a selection of existing data with
* new data.
*/
whenNotMatchedBySourceDelete?: string | boolean
}
export interface VectorIndex {
columns: string[]
name: string
@@ -726,7 +879,6 @@ export class LocalTable<T = number[]> implements Table<T> {
* Insert records into this Table, replacing its contents.
*
* @param data Records to be inserted into the Table
* Type Table is ArrowTable
* @return The number of rows added to the table
*/
async overwrite (
@@ -763,15 +915,18 @@ export class LocalTable<T = number[]> implements Table<T> {
})
}
async createScalarIndex (column: string, replace: boolean): Promise<void> {
async createScalarIndex (column: string, replace?: boolean): Promise<void> {
if (replace === undefined) {
replace = true
}
return tableCreateScalarIndex.call(this._tbl, column, replace)
}
/**
* Returns the number of rows in this table.
*/
async countRows (): Promise<number> {
return tableCountRows.call(this._tbl)
async countRows (filter?: string): Promise<number> {
return tableCountRows.call(this._tbl, filter)
}
/**
@@ -814,10 +969,49 @@ export class LocalTable<T = number[]> implements Table<T> {
})
}
async mergeInsert (on: string, data: Array<Record<string, unknown>> | ArrowTable, args: MergeInsertArgs): Promise<void> {
let whenMatchedUpdateAll = false
let whenMatchedUpdateAllFilt = null
if (args.whenMatchedUpdateAll !== undefined && args.whenMatchedUpdateAll !== null) {
whenMatchedUpdateAll = true
if (args.whenMatchedUpdateAll !== true) {
whenMatchedUpdateAllFilt = args.whenMatchedUpdateAll
}
}
const whenNotMatchedInsertAll = args.whenNotMatchedInsertAll ?? false
let whenNotMatchedBySourceDelete = false
let whenNotMatchedBySourceDeleteFilt = null
if (args.whenNotMatchedBySourceDelete !== undefined && args.whenNotMatchedBySourceDelete !== null) {
whenNotMatchedBySourceDelete = true
if (args.whenNotMatchedBySourceDelete !== true) {
whenNotMatchedBySourceDeleteFilt = args.whenNotMatchedBySourceDelete
}
}
const schema = await this.schema
let tbl: ArrowTable
if (data instanceof ArrowTable) {
tbl = data
} else {
tbl = makeArrowTable(data, { schema })
}
const buffer = await fromTableToBuffer(tbl, this._embeddings, schema)
this._tbl = await tableMergeInsert.call(
this._tbl,
on,
whenMatchedUpdateAll,
whenMatchedUpdateAllFilt,
whenNotMatchedInsertAll,
whenNotMatchedBySourceDelete,
whenNotMatchedBySourceDeleteFilt,
buffer
)
}
/**
* Clean up old versions of the table, freeing disk space.
*
* Note: this API is not yet available on LanceDB Cloud
* @param olderThan The minimum age in minutes of the versions to delete. If not
* provided, defaults to two weeks.
* @param deleteUnverified Because they may be part of an in-progress
@@ -848,7 +1042,6 @@ export class LocalTable<T = number[]> implements Table<T> {
* This can be run after making several small appends to optimize the table
* for faster reads.
*
* Note: this API is not yet available on LanceDB Cloud
* @param options Advanced options configuring compaction. In most cases, you
* can omit this arguments, as the default options are sensible
* for most tables.
@@ -895,6 +1088,18 @@ export class LocalTable<T = number[]> implements Table<T> {
return false
}
}
async addColumns (newColumnTransforms: Array<{ name: string, valueSql: string }>): Promise<void> {
return tableAddColumns.call(this._tbl, newColumnTransforms)
}
async alterColumns (columnAlterations: ColumnAlteration[]): Promise<void> {
return tableAlterColumns.call(this._tbl, columnAlterations)
}
async dropColumns (columnNames: string[]): Promise<void> {
return tableDropColumns.call(this._tbl, columnNames)
}
}
export interface CleanupStats {
@@ -970,9 +1175,6 @@ export interface IvfPQIndexConfig {
/**
* A unique name for the index
*/
/**
* Note: this parameter is not supported on LanceDB Cloud
*/
index_name?: string
/**
@@ -983,57 +1185,35 @@ export interface IvfPQIndexConfig {
/**
* The number of partitions this index
*/
/**
* Note: this parameter is not yet supported on LanceDB Cloud
*/
num_partitions?: number
/**
* The max number of iterations for kmeans training.
*/
/**
* Note: this parameter is not yet supported on LanceDB Cloud
*/
max_iters?: number
/**
* Train as optimized product quantization.
*/
/**
* Note: this parameter is not yet supported on LanceDB Cloud
*/
use_opq?: boolean
/**
* Number of subvectors to build PQ code
*/
/**
* Note: this parameter is not yet supported on LanceDB Cloud
*/
num_sub_vectors?: number
/**
* The number of bits to present one PQ centroid.
*/
/**
* Note: this parameter is not yet supported on LanceDB Cloud
*/
num_bits?: number
/**
* Max number of iterations to train OPQ, if `use_opq` is true.
*/
/**
* Note: this parameter is not yet supported on LanceDB Cloud
*/
max_opq_iters?: number
/**
* Replace an existing index with the same name if it exists.
*/
/**
* Note: this parameter is not yet supported on LanceDB Cloud
*/
replace?: boolean
/**

View File

@@ -24,7 +24,9 @@ import {
type IndexStats,
type UpdateArgs,
type UpdateSqlArgs,
makeArrowTable
makeArrowTable,
type MergeInsertArgs,
type ColumnAlteration
} from '../index'
import { Query } from '../query'
@@ -270,6 +272,59 @@ export class RemoteTable<T = number[]> implements Table<T> {
return new RemoteQuery(query, this._client, this._name) //, this._embeddings_new)
}
filter (where: string): Query<T> {
throw new Error('Not implemented')
}
async mergeInsert (on: string, data: Array<Record<string, unknown>> | ArrowTable, args: MergeInsertArgs): Promise<void> {
let tbl: ArrowTable
if (data instanceof ArrowTable) {
tbl = data
} else {
tbl = makeArrowTable(data, await this.schema)
}
const queryParams: any = {
on
}
if (args.whenMatchedUpdateAll !== false && args.whenMatchedUpdateAll !== null && args.whenMatchedUpdateAll !== undefined) {
queryParams.when_matched_update_all = 'true'
if (typeof args.whenMatchedUpdateAll === 'string') {
queryParams.when_matched_update_all_filt = args.whenMatchedUpdateAll
}
} else {
queryParams.when_matched_update_all = 'false'
}
if (args.whenNotMatchedInsertAll ?? false) {
queryParams.when_not_matched_insert_all = 'true'
} else {
queryParams.when_not_matched_insert_all = 'false'
}
if (args.whenNotMatchedBySourceDelete !== false && args.whenNotMatchedBySourceDelete !== null && args.whenNotMatchedBySourceDelete !== undefined) {
queryParams.when_not_matched_by_source_delete = 'true'
if (typeof args.whenNotMatchedBySourceDelete === 'string') {
queryParams.when_not_matched_by_source_delete_filt = args.whenNotMatchedBySourceDelete
}
} else {
queryParams.when_not_matched_by_source_delete = 'false'
}
const buffer = await fromTableToStreamBuffer(tbl, this._embeddings)
const res = await this._client.post(
`/v1/table/${this._name}/merge_insert/`,
buffer,
queryParams,
'application/vnd.apache.arrow.stream'
)
if (res.status !== 200) {
throw new Error(
`Server Error, status: ${res.status}, ` +
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
`message: ${res.statusText}: ${res.data}`
)
}
}
async add (data: Array<Record<string, unknown>> | ArrowTable): Promise<number> {
let tbl: ArrowTable
if (data instanceof ArrowTable) {
@@ -342,7 +397,7 @@ export class RemoteTable<T = number[]> implements Table<T> {
}
const column = indexParams.column ?? 'vector'
const indexType = 'vector' // only vector index is supported for remote connections
const indexType = 'vector'
const metricType = indexParams.metric_type ?? 'L2'
const indexCacheSize = indexParams.index_cache_size ?? null
@@ -365,8 +420,25 @@ export class RemoteTable<T = number[]> implements Table<T> {
}
}
async createScalarIndex (column: string, replace: boolean): Promise<void> {
throw new Error('Not implemented')
async createScalarIndex (column: string): Promise<void> {
const indexType = 'scalar'
const data = {
column,
index_type: indexType,
replace: true
}
const res = await this._client.post(
`/v1/table/${this._name}/create_scalar_index/`,
data
)
if (res.status !== 200) {
throw new Error(
`Server Error, status: ${res.status}, ` +
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
`message: ${res.statusText}: ${res.data}`
)
}
}
async countRows (): Promise<number> {
@@ -420,4 +492,16 @@ export class RemoteTable<T = number[]> implements Table<T> {
numUnindexedRows: results.data.num_unindexed_rows
}
}
async addColumns (newColumnTransforms: Array<{ name: string, valueSql: string }>): Promise<void> {
throw new Error('Add columns is not yet supported in LanceDB Cloud.')
}
async alterColumns (columnAlterations: ColumnAlteration[]): Promise<void> {
throw new Error('Alter columns is not yet supported in LanceDB Cloud.')
}
async dropColumns (columnNames: string[]): Promise<void> {
throw new Error('Drop columns is not yet supported in LanceDB Cloud.')
}
}

View File

@@ -13,9 +13,10 @@
// limitations under the License.
import { describe } from 'mocha'
import { assert } from 'chai'
import { assert, expect, use as chaiUse } from 'chai'
import * as chaiAsPromised from 'chai-as-promised'
import { fromTableToBuffer, makeArrowTable } from '../arrow'
import { convertToTable, fromTableToBuffer, makeArrowTable, makeEmptyTable } from '../arrow'
import {
Field,
FixedSizeList,
@@ -24,21 +25,79 @@ import {
Int32,
tableFromIPC,
Schema,
Float64
Float64,
type Table,
Binary,
Bool,
Utf8,
Struct,
List,
DataType,
Dictionary,
Int64
} from 'apache-arrow'
import { type EmbeddingFunction } from '../embedding/embedding_function'
describe('Apache Arrow tables', function () {
it('customized schema', async function () {
chaiUse(chaiAsPromised)
function sampleRecords (): Array<Record<string, any>> {
return [
{
binary: Buffer.alloc(5),
boolean: false,
number: 7,
string: 'hello',
struct: { x: 0, y: 0 },
list: ['anime', 'action', 'comedy']
}
]
}
// Helper method to verify various ways to create a table
async function checkTableCreation (tableCreationMethod: (records: any, recordsReversed: any, schema: Schema) => Promise<Table>): Promise<void> {
const records = sampleRecords()
const recordsReversed = [{
list: ['anime', 'action', 'comedy'],
struct: { x: 0, y: 0 },
string: 'hello',
number: 7,
boolean: false,
binary: Buffer.alloc(5)
}]
const schema = new Schema([
new Field('binary', new Binary(), false),
new Field('boolean', new Bool(), false),
new Field('number', new Float64(), false),
new Field('string', new Utf8(), false),
new Field('struct', new Struct([
new Field('x', new Float64(), false),
new Field('y', new Float64(), false)
])),
new Field('list', new List(new Field('item', new Utf8(), false)), false)
])
const table = await tableCreationMethod(records, recordsReversed, schema)
schema.fields.forEach((field, idx) => {
const actualField = table.schema.fields[idx]
assert.isFalse(actualField.nullable)
assert.equal(table.getChild(field.name)?.type.toString(), field.type.toString())
assert.equal(table.getChildAt(idx)?.type.toString(), field.type.toString())
})
}
describe('The function makeArrowTable', function () {
it('will use data types from a provided schema instead of inference', async function () {
const schema = new Schema([
new Field('a', new Int32()),
new Field('b', new Float32()),
new Field('c', new FixedSizeList(3, new Field('item', new Float16())))
new Field('c', new FixedSizeList(3, new Field('item', new Float16()))),
new Field('d', new Int64())
])
const table = makeArrowTable(
[
{ a: 1, b: 2, c: [1, 2, 3] },
{ a: 4, b: 5, c: [4, 5, 6] },
{ a: 7, b: 8, c: [7, 8, 9] }
{ a: 1, b: 2, c: [1, 2, 3], d: 9 },
{ a: 4, b: 5, c: [4, 5, 6], d: 10 },
{ a: 7, b: 8, c: [7, 8, 9], d: null }
],
{ schema }
)
@@ -52,13 +111,13 @@ describe('Apache Arrow tables', function () {
assert.deepEqual(actualSchema, schema)
})
it('default vector column', async function () {
it('will assume the column `vector` is FixedSizeList<Float32> by default', async function () {
const schema = new Schema([
new Field('a', new Float64()),
new Field('b', new Float64()),
new Field(
'vector',
new FixedSizeList(3, new Field('item', new Float32()))
new FixedSizeList(3, new Field('item', new Float32(), true))
)
])
const table = makeArrowTable([
@@ -76,12 +135,12 @@ describe('Apache Arrow tables', function () {
assert.deepEqual(actualSchema, schema)
})
it('2 vector columns', async function () {
it('can support multiple vector columns', async function () {
const schema = new Schema([
new Field('a', new Float64()),
new Field('b', new Float64()),
new Field('vec1', new FixedSizeList(3, new Field('item', new Float16()))),
new Field('vec2', new FixedSizeList(3, new Field('item', new Float16())))
new Field('vec1', new FixedSizeList(3, new Field('item', new Float16(), true))),
new Field('vec2', new FixedSizeList(3, new Field('item', new Float16(), true)))
])
const table = makeArrowTable(
[
@@ -105,4 +164,157 @@ describe('Apache Arrow tables', function () {
const actualSchema = actual.schema
assert.deepEqual(actualSchema, schema)
})
it('will allow different vector column types', async function () {
const table = makeArrowTable(
[
{ fp16: [1], fp32: [1], fp64: [1] }
],
{
vectorColumns: {
fp16: { type: new Float16() },
fp32: { type: new Float32() },
fp64: { type: new Float64() }
}
}
)
assert.equal(table.getChild('fp16')?.type.children[0].type.toString(), new Float16().toString())
assert.equal(table.getChild('fp32')?.type.children[0].type.toString(), new Float32().toString())
assert.equal(table.getChild('fp64')?.type.children[0].type.toString(), new Float64().toString())
})
it('will use dictionary encoded strings if asked', async function () {
const table = makeArrowTable([{ str: 'hello' }])
assert.isTrue(DataType.isUtf8(table.getChild('str')?.type))
const tableWithDict = makeArrowTable([{ str: 'hello' }], { dictionaryEncodeStrings: true })
assert.isTrue(DataType.isDictionary(tableWithDict.getChild('str')?.type))
const schema = new Schema([
new Field('str', new Dictionary(new Utf8(), new Int32()))
])
const tableWithDict2 = makeArrowTable([{ str: 'hello' }], { schema })
assert.isTrue(DataType.isDictionary(tableWithDict2.getChild('str')?.type))
})
it('will infer data types correctly', async function () {
await checkTableCreation(async (records) => makeArrowTable(records))
})
it('will allow a schema to be provided', async function () {
await checkTableCreation(async (records, _, schema) => makeArrowTable(records, { schema }))
})
it('will use the field order of any provided schema', async function () {
await checkTableCreation(async (_, recordsReversed, schema) => makeArrowTable(recordsReversed, { schema }))
})
it('will make an empty table', async function () {
await checkTableCreation(async (_, __, schema) => makeArrowTable([], { schema }))
})
})
class DummyEmbedding implements EmbeddingFunction<string> {
public readonly sourceColumn = 'string'
public readonly embeddingDimension = 2
public readonly embeddingDataType = new Float16()
async embed (data: string[]): Promise<number[][]> {
return data.map(
() => [0.0, 0.0]
)
}
}
class DummyEmbeddingWithNoDimension implements EmbeddingFunction<string> {
public readonly sourceColumn = 'string'
async embed (data: string[]): Promise<number[][]> {
return data.map(
() => [0.0, 0.0]
)
}
}
describe('convertToTable', function () {
it('will infer data types correctly', async function () {
await checkTableCreation(async (records) => await convertToTable(records))
})
it('will allow a schema to be provided', async function () {
await checkTableCreation(async (records, _, schema) => await convertToTable(records, undefined, { schema }))
})
it('will use the field order of any provided schema', async function () {
await checkTableCreation(async (_, recordsReversed, schema) => await convertToTable(recordsReversed, undefined, { schema }))
})
it('will make an empty table', async function () {
await checkTableCreation(async (_, __, schema) => await convertToTable([], undefined, { schema }))
})
it('will apply embeddings', async function () {
const records = sampleRecords()
const table = await convertToTable(records, new DummyEmbedding())
assert.isTrue(DataType.isFixedSizeList(table.getChild('vector')?.type))
assert.equal(table.getChild('vector')?.type.children[0].type.toString(), new Float16().toString())
})
it('will fail if missing the embedding source column', async function () {
return await expect(convertToTable([{ id: 1 }], new DummyEmbedding())).to.be.rejectedWith("'string' was not present")
})
it('use embeddingDimension if embedding missing from table', async function () {
const schema = new Schema([
new Field('string', new Utf8(), false)
])
// Simulate getting an empty Arrow table (minus embedding) from some other source
// In other words, we aren't starting with records
const table = makeEmptyTable(schema)
// If the embedding specifies the dimension we are fine
await fromTableToBuffer(table, new DummyEmbedding())
// We can also supply a schema and should be ok
const schemaWithEmbedding = new Schema([
new Field('string', new Utf8(), false),
new Field('vector', new FixedSizeList(2, new Field('item', new Float16(), false)), false)
])
await fromTableToBuffer(table, new DummyEmbeddingWithNoDimension(), schemaWithEmbedding)
// Otherwise we will get an error
return await expect(fromTableToBuffer(table, new DummyEmbeddingWithNoDimension())).to.be.rejectedWith('does not specify `embeddingDimension`')
})
it('will apply embeddings to an empty table', async function () {
const schema = new Schema([
new Field('string', new Utf8(), false),
new Field('vector', new FixedSizeList(2, new Field('item', new Float16(), false)), false)
])
const table = await convertToTable([], new DummyEmbedding(), { schema })
assert.isTrue(DataType.isFixedSizeList(table.getChild('vector')?.type))
assert.equal(table.getChild('vector')?.type.children[0].type.toString(), new Float16().toString())
})
it('will complain if embeddings present but schema missing embedding column', async function () {
const schema = new Schema([
new Field('string', new Utf8(), false)
])
return await expect(convertToTable([], new DummyEmbedding(), { schema })).to.be.rejectedWith('column vector was missing')
})
it('will provide a nice error if run twice', async function () {
const records = sampleRecords()
const table = await convertToTable(records, new DummyEmbedding())
// fromTableToBuffer will try and apply the embeddings again
return await expect(fromTableToBuffer(table, new DummyEmbedding())).to.be.rejectedWith('already existed')
})
})
describe('makeEmptyTable', function () {
it('will make an empty table', async function () {
await checkTableCreation(async (_, __, schema) => makeEmptyTable(schema))
})
})

View File

@@ -37,8 +37,10 @@ import {
Utf8,
Table as ArrowTable,
vectorFromArray,
Float64,
Float32,
Float16
Float16,
Int64
} from 'apache-arrow'
const expect = chai.expect
@@ -196,7 +198,7 @@ describe('LanceDB client', function () {
const table = await con.openTable('vectors')
const results = await table
.search([0.1, 0.1])
.select(['is_active'])
.select(['is_active', 'vector'])
.execute()
assert.equal(results.length, 2)
// vector and _distance are always returned
@@ -294,6 +296,7 @@ describe('LanceDB client', function () {
})
assert.equal(table.name, 'vectors')
assert.equal(await table.countRows(), 10)
assert.equal(await table.countRows('vector IS NULL'), 0)
assert.deepEqual(await con.tableNames(), ['vectors'])
})
@@ -369,6 +372,7 @@ describe('LanceDB client', function () {
const table = await con.createTable('f16', data)
assert.equal(table.name, 'f16')
assert.equal(await table.countRows(), total)
assert.equal(await table.countRows('id < 5'), 5)
assert.deepEqual(await con.tableNames(), ['f16'])
assert.deepEqual(await table.schema, schema)
@@ -391,24 +395,6 @@ describe('LanceDB client', function () {
})
}).timeout(120000)
it('fails to create a new table when the vector column is missing', async function () {
const dir = await track().mkdir('lancejs')
const con = await lancedb.connect(dir)
const data = [
{
id: 1,
price: 10
}
]
const create = con.createTable('missing_vector', data)
await expect(create).to.be.rejectedWith(
Error,
"column 'vector' is missing"
)
})
it('use overwrite flag to overwrite existing table', async function () {
const dir = await track().mkdir('lancejs')
const con = await lancedb.connect(dir)
@@ -549,6 +535,54 @@ describe('LanceDB client', function () {
assert.equal(await table.countRows(), 2)
})
it('can merge insert records into the table', async function () {
const dir = await track().mkdir('lancejs')
const con = await lancedb.connect(dir)
const data = [{ id: 1, age: 1 }, { id: 2, age: 1 }]
const table = await con.createTable('my_table', data)
// insert if not exists
let newData = [{ id: 2, age: 2 }, { id: 3, age: 2 }]
await table.mergeInsert('id', newData, {
whenNotMatchedInsertAll: true
})
assert.equal(await table.countRows(), 3)
assert.equal(await table.countRows('age = 2'), 1)
// conditional update
newData = [{ id: 2, age: 3 }, { id: 3, age: 3 }]
await table.mergeInsert('id', newData, {
whenMatchedUpdateAll: 'target.age = 1'
})
assert.equal(await table.countRows(), 3)
assert.equal(await table.countRows('age = 1'), 1)
assert.equal(await table.countRows('age = 3'), 1)
newData = [{ id: 3, age: 4 }, { id: 4, age: 4 }]
await table.mergeInsert('id', newData, {
whenNotMatchedInsertAll: true,
whenMatchedUpdateAll: true
})
assert.equal(await table.countRows(), 4)
assert.equal((await table.filter('age = 4').execute()).length, 2)
newData = [{ id: 5, age: 5 }]
await table.mergeInsert('id', newData, {
whenNotMatchedInsertAll: true,
whenMatchedUpdateAll: true,
whenNotMatchedBySourceDelete: 'age < 4'
})
assert.equal(await table.countRows(), 3)
await table.mergeInsert('id', newData, {
whenNotMatchedInsertAll: true,
whenMatchedUpdateAll: true,
whenNotMatchedBySourceDelete: true
})
assert.equal(await table.countRows(), 1)
})
it('can update records in the table', async function () {
const uri = await createTestDB()
const con = await lancedb.connect(uri)
@@ -1025,3 +1059,63 @@ describe('Compact and cleanup', function () {
assert.equal(await table.countRows(), 3)
})
})
describe('schema evolution', function () {
// Create a new sample table
it('can add a new column to the schema', async function () {
const dir = await track().mkdir('lancejs')
const con = await lancedb.connect(dir)
const table = await con.createTable('vectors', [
{ id: 1n, vector: [0.1, 0.2] }
])
await table.addColumns([{ name: 'price', valueSql: 'cast(10.0 as float)' }])
const expectedSchema = new Schema([
new Field('id', new Int64()),
new Field('vector', new FixedSizeList(2, new Field('item', new Float32(), true))),
new Field('price', new Float32())
])
expect(await table.schema).to.deep.equal(expectedSchema)
})
it('can alter the columns in the schema', async function () {
const dir = await track().mkdir('lancejs')
const con = await lancedb.connect(dir)
const schema = new Schema([
new Field('id', new Int64(), false),
new Field('vector', new FixedSizeList(2, new Field('item', new Float32(), true))),
new Field('price', new Float64(), false)
])
const table = await con.createTable('vectors', [
{ id: 1n, vector: [0.1, 0.2], price: 10.0 }
])
expect(await table.schema).to.deep.equal(schema)
await table.alterColumns([
{ path: 'id', rename: 'new_id' },
{ path: 'price', nullable: true }
])
const expectedSchema = new Schema([
new Field('new_id', new Int64(), false),
new Field('vector', new FixedSizeList(2, new Field('item', new Float32(), true))),
new Field('price', new Float64(), true)
])
expect(await table.schema).to.deep.equal(expectedSchema)
})
it('can drop a column from the schema', async function () {
const dir = await track().mkdir('lancejs')
const con = await lancedb.connect(dir)
const table = await con.createTable('vectors', [
{ id: 1n, vector: [0.1, 0.2] }
])
await table.dropColumns(['vector'])
const expectedSchema = new Schema([
new Field('id', new Int64(), false)
])
expect(await table.schema).to.deep.equal(expectedSchema)
})
})

View File

@@ -9,6 +9,6 @@
"declaration": true,
"outDir": "./dist",
"strict": true,
// "esModuleInterop": true,
"sourceMap": true,
}
}

View File

@@ -18,5 +18,5 @@ module.exports = {
"@typescript-eslint/method-signature-style": "off",
"@typescript-eslint/no-explicit-any": "off",
},
ignorePatterns: ["node_modules/", "dist/", "build/", "vectordb/native.*"],
ignorePatterns: ["node_modules/", "dist/", "build/", "lancedb/native.*"],
};

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