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ENUMERATE ROWS

Category: Transform / Basic

Description

This action adds a new column with row numbers. Rows can be enumerated for either the entire table or inside groups defined by combinations of values in particular columns. In the latter case, row numbers restart from 1 inside each group.

Use cases

Create unique row IDs for datasets that do not already possess a unique key field.
To define an original record order to re-sort records by downstream.

Action settings

Setting	Description
Enumerate in groups	Select this option to restart row numbering at each unique value in the selected column(s).
Column list	This list appears when the Enumerate in groups is selected. Select which columns are taken into account to form unique values when numbering columns. Column numbering will restart at 1 for each unique value or value combination across all selected columns.

Examples

Source table:

Province	City	Amount	Total Tax
ON	Toronto	1000	125
ON	Ottawa	1000	125
ON	Brampton	2000	250
QC	Montreal	2000	270
QC	Quebec City	2000	270

After transformation (enumeration for entire table).

RowNo	Province	City	Amount	Total Tax
1	ON	Toronto	1000	125
2	ON	Ottawa	1000	125
3	ON	Brampton	2000	250
4	QC	Montreal	2000	270
5	QC	Quebec City	2000	270

After transformation (enumeration for each Province).

RowNo	Province	City	Amount	Total Tax
1	ON	Toronto	1000	125
2	ON	Ottawa	1000	125
3	ON	Brampton	2000	250
1	QC	Montreal	2000	270
2	QC	Quebec City	2000	270

After transformation (enumeration for each Province-Amount pairing).

RowNo	Province	City	Amount	Total Tax
1	ON	Toronto	1000	125
2	ON	Ottawa	1000	125
1	ON	Brampton	2000	250
1	QC	Montreal	2000	270
2	QC	Quebec City	2000	270

Community examples

String manipulation (REVERSE) (Project; Module: Main; Group: Tab 1; Table: Using actions; Action position: 4)
How to order columns by a list of columns (Project; Module: Main; Group: Tab 1; Table: Reordered columns; Action position: 2)
Update existing data in a database table (Project; Module: Main; Group: Tab 1; Table: Sample data; Action position: 4)
Iterate through a set of column (Project; Module: Main; Group: Tab 1; Table: in.csv; Action position: 2)
.txt to .csv - Multiple Line & Character Length HELP! (Project; Module: Main; Group: Group 1; Table: SAMPLE.txt; Action position: 4)

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