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lancedb-gatefixer[bot]
7e979c1416
Empty local TypeScript queries returned a zero-row Arrow table with no columns because `toArrow()` built the table solely from record batches. Local streams can yield no batches, while remote streams often supply an empty batch carrying the schema. Expose the executed stream's schema through the native iterator and decode it into an empty Arrow table when no batches arrive. This preserves projected and search columns, types, nullability, and metadata without executing another query. Document the empty-result behavior. Validation: - Eleven regression cases failed with the original `toArrow()` implementation; all twelve now pass, including remote schema-only and empty-batch responses. - All 1,075 tests in the query, remote, Arrow, and table suites pass. - Native build, TypeScript compilation, Rust formatting and Clippy (`-D warnings`), TypeScript lint/formatting, and documentation generation pass. Fixes #4386 <!-- lance-gatekeeper-fix:v1 agent=7d589da1f7db5c7383f9600490e111a9 generation=1 --> Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
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 more complete examples.
Development
See CONTRIBUTING.md for information on how to contribute to LanceDB.