To allow the user to process only single fields on the selection screen, you use the following syntax:
SELECT-OPTIONS seltab FOR f ..... NO INTERVALS .....
As a result, the second input field does not appear on the selection screen. The user can only enter a single field comparison for the first row of the selection table. However, the user can call the Multiple Selection screen and enter range selections there.
REPORT demo_sel_screen_select_no_int1. DATA wa_spfli TYPE spfli. SELECT-OPTIONS airline FOR wa_spfli-carrid NO INTERVALS.
The following standard selection screen appears:
The user can enter only a single field directly. However, the user can enter multiple selections by clicking the pushbutton on the right side of the screen.
If you use the NO-EXTENSION addition as follows:
REPORT demo_sel_screen_select_no_int2. DATA wa_spfli TYPE spfli. SELECT-OPTIONS airline FOR wa_spfli-carrid NO INTERVALS NO-EXTENSION
the selection screen looks like this:
Now, the user can actually enter only a single field comparison.