# aggregationFn_sum

# Variable: aggregationFn\_sum

```ts
const aggregationFn_sum: AggregationFn<any, any>;
```

Defined in: [fns/aggregationFns.ts:10](https://github.com/TanStack/table/blob/main/packages/table-core/src/fns/aggregationFns.ts#L10)

Aggregation function for summing up the values of a column.