You can use an ORDER BY clause in the SQL SELECT statement for the DataWindow object to sort the data that is retrieved from the database. If you do this, the DBMS itself does the sorting and the rows are brought into PowerBuilder already sorted.
However, you might want to sort the rows after they are retrieved. For example, you might want to:
Offload the processing from the DBMS
Sort on an expression, which might not be allowed in the SELECT statement but is allowed in PowerBuilder
Select Rows>Sort from the menu bar.
Drag to the Columns box the columns on which you want to sort the rows, and specify whether you want to sort in ascending or descending order.
The order of the columns determines the precedence of the sort. To reorder the columns, drag them up or down in the list. To delete a column from the sort columns list, drag the column outside the dialog box.
You can also specify expressions to sort on: for example, if you have two columns, Revenues and Expenses, you can sort on the expression Revenues – Expenses.
To specify an expression to sort on, double-click a column name in the Columns box, modify the expression in the Modify Expression dialog box, and click OK.
You return to the Specify Sort Columns dialog box with the expression displayed.
Click OK when you have specified all the sort columns and expressions.
To sort the rows:
