Regarding index and anla table

Question

Hi
i have code as below and i have Select option input
for fields bukrs, anln1 and anln2.
SELECT bukrs      anln1     anln2     anlkl txt50 ktogr invnrz sernr deakt               
    FROM anla                    
    INTO TABLE o_anla                    
   WHERE bukrs IN wa_ex_bukrs.
   if sy-subrc = 0.
   DELETE o_anla WHERE anln2 NOT IN wa_ex_anln2.
   DELETE o_anla WHERE anln1 NOT IN wa_ex_anln1.
   endif.
Does the below code change is more faster than above code.?
SELECT bukrs anln1 anln2 anlkl txt50 ktogr invnrz sernr deakt               
    FROM anla                    
    INTO TABLE o_anla                    
   WHERE bukrs IN wa_ex_bukrs
   and anln1 in wa_ex_anln1
   and anln2 in wa_ex_anln2.
I feel bukrs and anln1 and anln2 are primary key fields and could increase performance better.
However there is no std index available for this 3 fields. do you think creating secondary index
for this 3 field can increase performance.
Pls confirm.
Regards

Answer 1

Hi,
If bukrs, anln1 and anln2 makes the primary key then you are hitting the table with primary index itself(which is always a better option for good performance). Your 2nd query would always do better.  No need to create secondary index in this case.
Regards,
Ravi