[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\_uri\_parameter

```ts
function sqlite3_uri_parameter(
  deps: SqliteWasmDep,
): (z: 0 | SqliteFilenamePtr, zParam: CStringPtr) => 0 | CStringPtr;
```

Defined in: [packages/sqlite-wasm/src/CApi.ts:2938](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/CApi.ts#L2938)

Returns the value of a URI query parameter of a filename, an empty string for
a parameter without a value, or NULL when it is absent or the filename is
NULL.

Wasm type `i(ii)`. Signature `["sqlite3_uri_parameter", "string",
"sqlite3_filename", "string"]` from SQLite's table.

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