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start simple examples

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Alex Garcia 2024-05-10 20:51:42 -07:00
parent 2572aa1413
commit e6067e2711
28 changed files with 1354 additions and 2 deletions
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examples/simple-wasm/index.html Normal file
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<html>
<body>
<h1>sqlite-vec demo/simple-wasm</h1>
<div id="target"></div>
<script type="module">
import {default as init} from "./sqlite3.mjs";
function log(msg) {
const pre = document.querySelector('#target').appendChild(document.createElement("pre"));
pre.textContent = msg;
}
const sqlite3 = await init();
const db = new sqlite3.oo1.DB(":memory:");
window.db = db;
const [sqlite_version, vec_version] = db.selectArray('select sqlite_version(), vec_version();')
log(`sqlite_version=${sqlite_version}, vec_version=${vec_version}`);
const items = [
[1, new Float32Array([0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8])],
[2, new Float32Array([0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8])]
];
db.exec('CREATE VIRTUAL TABLE vec_items USING vec0(embedding float[8]);');
const stmt = db.prepare("INSERT INTO vec_items(rowid, embedding) VALUES (?, ?)");
for(const item of items) {
stmt
.bind(1, item[0])
.bind(2, item[1].buffer)
.stepReset();
}
stmt.finalize();
const query = new Float32Array([0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8]);
const rows = db
.selectArrays(
`
SELECT
rowid,
distance
FROM vec_items
WHERE embedding MATCH ?
ORDER BY distance
LIMIT 5
`, query.buffer
);
log(JSON.stringify(rows));
</script>
</body>
</html>
`