# AggregatedExpressionReturnType

Canonical page: https://www.adaptabletools.com/docs/reference/aggregatedexpressionreturntype

Static result type a custom aggregation may declare.
`'input'` = same type as the aggregated column.

```ts title="TypeScript"
export type AggregatedExpressionReturnType = 'number' | 'text' | 'date' | 'boolean' | 'input';
```