---
title: "ClikaRT::tables::Table::AggSpec"
sidebar_label: "Table::AggSpec"
description: "One aggregation of a group_by: the column, the reduction, and the output name."
---

<!-- Generated by tools/doxygen2mdx from Doxygen XML. Do not edit. -->

<span class="api-kind api-kind--struct">struct</span>

**Header:** `ClikaRT/tables/table.h`

One aggregation of a [`group_by`](./Table.md#group_by): the column, the reduction, and the output name.

## Data members

### column {#column}

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`std::string_view` **`column`**

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column to aggregate

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Declared in `ClikaRT/tables/table.h`, line 212

</div>

### agg {#agg}

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[`Agg`](./Table.md#Agg) **`agg`** `=` [`Agg::Sum`](./Table.md#Agg)

</div>

the reduction (default `Sum`).

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Declared in `ClikaRT/tables/table.h`, line 213

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### out\_name {#out_name}

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`std::string_view` **`out_name`** `= {}`

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output name (default "\<column\>\_\<agg\>")

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Declared in `ClikaRT/tables/table.h`, line 214

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