Adding Calculated Columns

NOTE:

User defined columns can only be added when there is an available data source.
The user-defined columns are added in the topmost data source in the Data Sources list or in the joined or combined data source.
An auto key can only be created once.
Ranking requires a numeric source column.
Time bucketing requires a time source column and each source column can only be used once.
Numeric bucketing requires a numeric source column.
Adding Text GroupingsText grouping requires a text source column.
The added user-defined column displays on the Data Preview with a pen symbol which allows its modification.