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af54e0ce06
* Add a new "table stats" API to expose basic table and fragment statistics with local and remote table implementations ### Questions * This is using `calculate_data_stats` to determine total bytes in the table. This seems like a potentially expensive operation - are there any concerns about performance for large datasets? ### Notes * bytes_on_disk seems to be stored at the column level but there does not seem to be a way to easily calculate total bytes per fragment. This may need to be added in lance before we can support fragment size (bytes) statistics. <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit - **New Features** - Added a method to retrieve comprehensive table statistics, including total rows, index counts, storage size, and detailed fragment size metrics such as minimum, maximum, mean, and percentiles. - Enabled fetching of table statistics from remote sources through asynchronous requests. - Extended table interfaces across Python, Rust, and Node.js to support synchronous and asynchronous retrieval of table statistics. - **Tests** - Introduced tests to verify the accuracy of the new table statistics feature for both populated and empty tables. <!-- end of auto-generated comment: release notes by coderabbit.ai -->
LanceDB JavaScript SDK
A JavaScript library for LanceDB.
Installation
npm install @lancedb/lancedb
This will download the appropriate native library for your platform. We currently support:
- Linux (x86_64 and aarch64 on glibc and musl)
- MacOS (Intel and ARM/M1/M2)
- Windows (x86_64 and aarch64)
Usage
Basic Example
import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("data/sample-lancedb");
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.vectorSearch([0.1, 0.3]).limit(20).toArray();
console.log(results);
The quickstart contains a more complete example.
Development
See CONTRIBUTING.md for information on how to contribute to LanceDB.