---
title: "counts(order:)"
framework: tabulardata
role: symbol
role_heading: Instance Method
path: "tabulardata/rowgroupingprotocol/counts(order:)"
---

# counts(order:)

Generates a data frame, that you choose how to sort, with two columns, one that has a row for each group key and another for the number or rows in the group.

## Declaration

```swift
func counts(order: Order?) -> DataFrame
```

## Parameters

- `order`: A sorting order the method uses to sort the data frame by its count column.

## Discussion

Discussion The name of the data frame’s column that stores the number of rows in each group is count.

## See Also

### Aggregating a Row Grouping

- [counts()](tabulardata/rowgroupingprotocol/counts().md)
- [sums(_:_:order:)](tabulardata/rowgroupingprotocol/sums(_:_:order:).md)
- [sums(_:order:)](tabulardata/rowgroupingprotocol/sums(_:order:).md)
- [means(_:_:order:)](tabulardata/rowgroupingprotocol/means(_:_:order:).md)
- [means(_:order:)](tabulardata/rowgroupingprotocol/means(_:order:).md)
- [minimums(_:_:order:)](tabulardata/rowgroupingprotocol/minimums(_:_:order:).md)
- [minimums(_:order:)](tabulardata/rowgroupingprotocol/minimums(_:order:).md)
- [maximums(_:_:order:)](tabulardata/rowgroupingprotocol/maximums(_:_:order:).md)
- [maximums(_:order:)](tabulardata/rowgroupingprotocol/maximums(_:order:).md)
- [aggregated(on:into:transform:)](tabulardata/rowgroupingprotocol/aggregated(on:into:transform:).md)
- [aggregated(on:naming:transform:)](tabulardata/rowgroupingprotocol/aggregated(on:naming:transform:).md)