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Scanning a Vector from SQLite Back to Go #171

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wjkoh opened this issue Jan 15, 2025 · 0 comments
Open

Scanning a Vector from SQLite Back to Go #171

wjkoh opened this issue Jan 15, 2025 · 0 comments

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@wjkoh
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wjkoh commented Jan 15, 2025 •
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I store []float32 data using sqlite_vec's SerializeFloat32 function and am wondering how I can retrieve it from SQLite into Go. I've been using vec_to_json and unmarshaling the JSON on the Go side as the following code, but I suspect there might be a better approach. Could you please advise?

	var embeddingJson string
	row := db.QueryRowContext(
		ctx,
		`SELECT vec_to_json(embedding) FROM documents WHERE document_id = ?`,
		id,
	)
	err := row.Scan(&embeddingJson)
	if err != nil {
		return nil, err
	}
	var embedding []float32
	err = json.Unmarshal([]byte(embeddingJson), &embedding)
	if err != nil {
		return nil, err
	}
	return embedding, nil
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@wjkoh