Runtime error for SELECT statement

Question

Hi All,
I have written a SELECT statement as follows in my code.
select budat pernr aufnr vornr from AFRU
into corresponding fields of table it_vornr
for all entries in it_cats_tmp
where budat = it_cats_tmp-workdate
and pernr = it_cats_tmp-pernr
and aufnr = it_cats_tmp-rnplnr.
The table IT-CATS_TMP is having around 3000+ lines.
When control moves to this statement, the system is throwing Runtime error or its taking around 30 minutes time to execute.
If i query the same table (AFRU) in SE11 for the same set of conditions, the table displays relevent data immediately.
What might be the reason for this delay/Runtime Error?
Shall i need to change the syntax for better performance?
Your guidelines are highly appreciated......
Regards
Pavan

Answer 1

Hi
1. Try to put WHERE conditions for KEY FIELDS.
Solution: Create a RANGE for the key fields & put that in SELECT Query.
DATA: gr_rueck TYPE RANGES OF afru-rueck.
SELECT .. WHERE rueck IN gr_rueck.
2. Avoid using CORRESPONDING FIELDS OF TABLE in SELECT.
Solution: Change internal table fields ORDER.
TYPES:
BEGIN OF TY_VORNR,
  budat TYPE ..
  pernr TYPE ..
  aufnr TYPE ..
  vornr TYPE ..
  ... " Other fields
END OF TY_VORNR.
SELECT .. INTO TABLE IT_VORNR ...