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b0800b4b71
### Bug Fix: Undefined Values in Nullable Fields **Issue**: When inserting data with `undefined` values into nullable fields, LanceDB was incorrectly coercing them to default values (`false` for booleans, `NaN` for numbers, `""` for strings) instead of `null`. **Fix**: Modified the `makeVector()` function in `arrow.ts` to properly convert `undefined` values to `null` for nullable fields before passing data to Apache Arrow. fixes: #2645 **Result**: Now `{ text: undefined, number: undefined, bool: undefined }` correctly becomes `{ text: null, number: null, bool: null }` when fields are marked as nullable in the schema. **Files Changed**: - `nodejs/lancedb/arrow.ts` (core fix) - `nodejs/__test__/arrow.test.ts` (test coverage) - This ensures proper null handling for nullable fields as expected by users. --------- Co-authored-by: Will Jones <willjones127@gmail.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 a more complete example.
Development
See CONTRIBUTING.md for information on how to contribute to LanceDB.