[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\_column\_type

```ts
function sqlite3_column_type(
  deps: SqliteWasmDep,
): (pStmt: SqliteStmtPtr, iCol: number) => SqliteDataType;
```

Defined in: [packages/sqlite-wasm/src/CApi.ts:2241](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/CApi.ts#L2241)

Returns the storage class of a result column in the current row. Read it
before any other column function, which can convert the value.

Wasm type `i(ii)`. Signature `["sqlite3_column_type", "int", "sqlite3_stmt*",
"int"]` from SQLite's table.

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