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ABAP - Keyword Documentation → ABAP - Reference → Processing Internal Data → Internal Tables → Processing Statements for Internal Tables → LOOP AT itab → LOOP AT itab - Basic Form → AT - Group Level Processing →
SUM
Syntax
SUM.
Effect
The statement SUM can only be specified within a loop starting with LOOP, and is only respected within a AT-ENDAT control structure. Prerequisites for using the statement SUM include using the addition INTO in the LOOP statement, and that the specified work area wa is compatible with the row type of the internal table. In addition, SUM cannot be used when the row type of the internal table itab contains components that are tables.
Note
When the AT control structure is exited, the content of the current table row is reassigned to the work area wa.
Example
Calculates a sum with SUM at AT END OF. The rows of the respective current group level are evaluated.
DATA:
BEGIN OF wa,
col1 TYPE i,
col2 TYPE i,
END OF wa,
itab LIKE TABLE OF wa WITH EMPTY KEY.
itab = VALUE #( FOR i = 1 UNTIL i > 5
FOR j = 1 UNTIL j > i
( col1 = i col2 = j ) ).
LOOP AT itab INTO wa.
AT END OF comp2.
SUM.
cl_demo_output=>write( wa ).
ENDAT.
ENDLOOP.
cl_demo_output=>display( wa ).
Example
Calculates a sum with SUM at AT LAST. All rows of the internal table are evaluated.
DATA:
BEGIN OF wa,
col TYPE i,
END OF wa,
itab LIKE TABLE OF wa WITH EMPTY KEY.
itab = VALUE #( FOR i = 1 UNTIL i > 10 ( col = i ) ).
LOOP AT itab INTO wa.
AT LAST.
SUM.
cl_demo_output=>display( wa ).
ENDAT.
ENDLOOP.
Executable Example
Group Level Processing with Totals
Handleable Exceptions
CX_SY_ARITHMETIC_OVERFLOW
Non-Handleable Exceptions