Columns (on GROUP BY Details)
In the Columns list, select the columns you want to include in the GROUP BY clause. You can select one or more columns, or none.
The list shows the columns in each of the tables and views you selected in the Tables/views list on the SELECT Detailswindow. The column names are fully qualified, and have the form <table or view name>.<column name>.
Last modified date: 01/29/2015