General

Group By dialog

Enter the information in the options as shown in the following table:

Option	Description
Step name	Specifies the unique name of the Group By step on the canvas. You can customize the name or leave it as the default.
Include all rows?	Select this check box if you want to include all rows in the output. Clear this check box if you only want to output the aggregate rows. The following conditions apply if you select Include all rows while using the Spark engine: Specify which fields to group in The fields that make up the group table. You cannot select the Number of distinct values aggregate type. The following options are not available unless the Include all rows option is selected: Add line number, restart in each group Line number field name
Temporary files directory	This field is either not used by the Spark engine or not implemented for Spark on AEL. Temporary files are not created when run with Spark.
TMP-file prefix	This field is either not used by the Spark engine or not implemented for Spark on AEL.
Add line number, restart in each group	Adds a line number that restarts at 1 in each group. When both Include all rows and this option are selected, all rows are included in the output with a line number for each row.
Line number field name	Specifies the name of the field where you want to add line numbers for each new group.
Always give back a result row	Select this check box to return a result row, even when there is no input row. When there are no input rows, this option returns a count of zero (0). Clear this check box if you only want to output a result row when there is an input row.