[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\_overload\_function

```ts
function sqlite3_overload_function(
  deps: SqliteWasmDep,
): (db: SqliteDbPtr, zFuncName: CStringPtr, nArg: number) => SqliteResultCode;
```

Defined in: [packages/sqlite-wasm/src/CApi.ts:2602](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/CApi.ts#L2602)

Ensures a global SQL function with this name and argument count exists,
creating a placeholder that raises an error when called, so a virtual table's
xFindFunction can overload it.

Wasm type `i(iii)`. Signature `["sqlite3_overload_function", "int",
"sqlite3*", "string", "int"]` from SQLite's table.

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