[API reference](https://evolu.dev/docs/api-reference) › [@evolu/sqlite-wasm](https://evolu.dev/docs/api-reference/sqlite-wasm) › [c-api](https://evolu.dev/docs/api-reference/sqlite-wasm/c-api) › sqlite3\_value\_blob

```ts
function sqlite3_value_blob(
  deps: SqliteWasmDep,
): (value: SqliteValuePtr) => 0 | WasmPtr;
```

Defined in: [packages/sqlite-wasm/src/CApi.ts:2449](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/CApi.ts#L2449)

Returns the address of a value's bytes, rendering a number as text, or NULL
for a zero-length value or SQL NULL. Call it before
[sqlite3\_value\_bytes](https://evolu.dev/docs/api-reference/sqlite-wasm/c-api/functions/sqlite3_value_bytes); a later text conversion invalidates the address.

Wasm type `i(i)`. Signature `["sqlite3_value_blob", "*", "sqlite3_value*"]`
from SQLite's table.

See https://sqlite.org/c3ref/value_blob.html.