> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/pdi-transformation-steps-reference-overview/transformation-executor/options-transformation-executor/row-grouping-tab-transformation-executor.md).

# Row grouping tab

![Row grouping tab](/files/Xeno6bpsX2ps9cAkL75J)

Specify how to group the input rows by one of the following methods:

* Specific number of rows.
* Specific field.
* Specified duration of time.

You can use the input rows in a transformation or job entry, or you can get the records themselves by using the Get rows from result step in a transformation.

To access the **Field to group rows on** or **Duration time when collecting rows** options, delete the default value in the **Number of rows to send to transformation** option.

| Option                                       | Group                                                                                                                                                                                                                                    |
| -------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Number of rows to send to transformation** | Specify a number. After every N number of rows, the job will be executed and these N rows will be passed to the transformation.                                                                                                          |
| **Field to group rows on**                   | Specify a field for grouping rows. Rows will be collected in a group as long as the field value stays the same. If the value changes, the transformation will be executed and the accumulated rows will be passed to the transformation. |
| **Duration time when collecting rows**       | Specify a time in milliseconds. This value is the amount of time the step will spend collecting rows prior to the execution of the transformation.                                                                                       |


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