REPORT ZNGAP.
TYPES:
BEGIN OF struc,
col1 TYPE c LENGTH 2,
col2 TYPE i,
col3 TYPE i,
END OF struc.
DATA itab TYPE SORTED TABLE OF struc WITH UNIQUE KEY col1
WITH UNIQUE SORTED KEY sec_key COMPONENTS col2.
itab = VALUE #( ( col1 = 'AA' col2 = 5 col3 = 100 )
( col1 = 'BB' col2 = 4 col3 = 100 )
( col1 = 'CC' col2 = 3 col3 = 100 )
( col1 = 'DD' col2 = 2 col3 = 100 )
( col1 = 'EE' col2 = 1 col3 = 100 ) ).
DATA(wa) = itab[ 1 ].
ASSIGN itab[ col1 = 'BB' ] TO FIELD-SYMBOL().
cl_demo_output=>display( itab[ 3 ] ).
IF line_exists( itab[ KEY sec_key col2 = 2 ] ).
ENDIF.
DATA(line) = itab[ KEY sec_key col2 = 4 ].
TRY.
DATA(not) = itab[ KEY sec_key col2 = 333 ].
CATCH cx_root.
ENDTRY.
itab[ col1 = 'EE' ]-col3 = 555.
