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Wyatt Alt
8e24dd3828
Table::add_columns now takes no arguments and returns AddColumnsBuilder, so calls become .add_columns().transform(t).execute(). read_columns was the second positional argument but reaches only one of the five transform variants. In lance's add_columns_to_fragments only BatchUDF receives the caller's value: SqlExpressions replaces it with the columns its expressions reference, Stream and Reader pass None, and AllNulls reads nothing. So it was mandatory on every call -- all eighteen call sites here passed None -- and silently discarded four times out of five. As a builder method it is optional, and setting it where lance would discard it is now an error, which does reject a call that previously succeeded while ignoring the argument. Matches the builders add, update, and merge_insert already use.
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.