SUM ( SAP ABAP Keyword)

SUM is a keyword used in SAP ABAP programming.This tutorial covers its introduction & syntax details.

SUM


Basic form
SUM.

Effect
When processing an internal table in a block starting with LOOP and concluded by ENDLOOP , SUM calculates the control totals of all fields of type I , F and P (see also ABAP/4 number types ) and places them in the LOOP output area (header line of the internal table or an explicitly specified work area).

You can use the SUM statement both at the end and the beginning of a control group (see also AT FIRST/LAST ).

Example
Display the table T with sub-totals:

DATA: BEGIN OF T OCCURS 100,
CODE(4),
SALES TYPE P,
DISCOUNT TYPE P,
END OF T.
...
LOOP AT T.
AT FIRST.
SUM.
WRITE: /4 'Grand Total:',
20 T-SALES, 40 T-DISCOUNT.
ULINE. SKIP.
ENDAT.
WRITE: / T-CODE,
20 T-SALES, 40 T-DISCOUNT.
AT END OF CODE.
SUM.
WRITE: / T-CODE, 10 'Total:',
20 T-SALES, 40 T-DISCOUNT.
SKIP.
ENDAT.
ENDLOOP.

Notes
When you use SUM in a LOOP with an explicitly specified output area, this output area must be compatible with the line type of the internal table.
When using LOOP to process a sorted extract (see SORT ), the control total of f at the end of the group appears in the field SUM(f) - - if f is type I , F or P .

Note
Runtime errors

SUM_OVERFLOW : Value too large when calculatng totals in internal table, field too small.


SUM_NO_INTERNAL_TABLE : The SUM statement was used outside a LOOP on an internal table.


SUM_ON_FOREIGN_INTERNAL_TABLE : The SUM statement was used in a LOOP belonging to another ABAP/4 program.

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