INDEX Creation for Query Optimization

Question

Hi Experts
I have the below query:
SELECT A~VBELN A~POSNR A~MATNR A~KWMENG A~KBMENG
A~ERDAT A~ERZET A~PSTYV D~AUART E~ETTYP E~EDATU
INTO TABLE INT_RES
FROM VBAK AS D INNER JOIN VBAP AS A
ON D~VBELN EQ A~VBELN
INNER JOIN VBEP AS E
ON E~VBELN EQ A~VBELN AND
E~POSNR EQ A~POSNR
WHERE D~VBELN IN S_VBELN AND
D~AUART IN S_AUART AND
D~VKORG IN S_VKORG AND
D~VBTYP EQ 'C' AND
( ( A~MATNR LIKE C_PREFIX_SP AND ZZ_MSPOSNR NE 0 AND KBMENG EQ 0 ) OR
( MATNR LIKE C_PREFIX_FP AND KWMENG NE A~KBMENG ) ) AND
A~ABGRU EQ SPACE AND
A~MTVFP IN R_MTVFP AND
A~PRCTR IN R_PRCT AND
E~ETENR EQ '1'.
I tried many ways of re-writing the query - yet performance could not be improved. Now I need to create an INDEX and check if it works out?
Could you please help me suggesting upon which table and which fields in which order I can create an effective INDEX?
Please Help

Answer 1

Hi,
Check which selection criteria are polulated when you run the query.
Also one issue might be with using the LIKE keyword in the where clause.
( ( A~MATNR LIKE C_PREFIX_SP AND ZZ_MSPOSNR NE 0 AND KBMENG EQ 0 ) OR
( MATNR LIKE C_PREFIX_FP AND KWMENG NE A~KBMENG ) ) AND
Instead of using this, I would suggest you get all the materials from material master using the like operator and pass them in a range to this query.
select matnr from mara into it_mara
where matnr like c_prefix_sp.
select matnr from mara appending table it_mara where matnr like c_prefix_fp.
"Loop at it_mara and populate a range. Which will then be used in the select query
That might help improve the performance.
regards,
Advait