Problem using SUM BY

Question

I need to count the number of jobs by year and nature of the job.
I need to calculate also the number only by year (to calculate, later, the percentage). To do this, I tried to use the SUM BY statement:
SUM("- Misure"."Numero Lavori" by "- Inizio Lavoro"."Anno Inizio Lavoro")
Note that the number of jobs is calculated with the COUNT DISTINCT aggregation rule.
Here's the query generated by BI:
WITH
SAWITH0 AS (select count(distinct T6686.CD_LAVORO) as c1,
T6906.ANNO as c2,
T6842.CD_RITORNO_LAVORO as c3
from
L_RITORNO_LAVORO T6842,
L_DATA T6906 /* L_DATA_INIZIO_LAVORO */ ,
F_LAVORO T6686
where ( T6686.ID_RITORNO_LAVORO = T6842.ID_RITORNO_LAVORO and T6686.ID_DT_INIZIO_LAVORO = T6906.ID_DATA )
group by T6842.CD_RITORNO_LAVORO, T6906.ANNO),
SAWITH1 AS (select sum(SAWITH0.c1) as c1,
SAWITH0.c2 as c2,
SAWITH0.c3 as c3,
SAWITH0.c1 as c4
from
SAWITH0
group by SAWITH0.c1, SAWITH0.c2, SAWITH0.c3)
select distinct SAWITH1.c2 as c1,
SAWITH1.c3 as c2,
SAWITH1.c4 as c3,
SAWITH1.c1 as c4
from
SAWITH1
I suspect the part painted in bold shouldn't be there. Anyone can help me?

Answer 1

hi,,,,,,
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 .
Thanks
Saurabh