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Document reading a vector form sqlite to python #153

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Expand Up @@ -67,6 +67,20 @@ db.execute(
) # 4
```

### Reading Vectors

When reading vectors from a SQLite database, you can use the `vec_to_json()` function to convert the BLOB format into a JSON array.

```python
import json

db.execute("CREATE TABLE test (embedding BLOB)")
db.execute("INSERT INTO test VALUES (?)", [serialize_float32([0.1, 0.2, 0.3, 0.4])])

json_str, = db.execute("SELECT vec_to_json(embedding) FROM test").fetchone()
print(json.loads(json_str)) # [0.1, 0.2, 0.3, 0.4]
```


## Using an up-to-date version of SQLite {#updated-sqlite}

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