Fetching materials on basis of Division creating perfomance problem

Question

Hi Experts,
i am fetching Data from three table like
select a~matnr a~extwg
b~charg b~werks b~clabs b~cspem b~cinsm
c~vfdat
from mara as a join mchb as b
on a~matnr = b~matnr join mch1 as c on b~matnr = c~matnr  and b~charg = c~charg
into table  itab_main
where  a~spart = p_spart and b~werks = p_werks
and b~lgort = 'FG01' .
it is creating perfomance problem
so my questin is 'is there any index table for mara ?(like vrpma for vbak)'
so we can get all the material on base of division fast.
Regards,
Alpesh
Edited by: Alpesh on Jun 2, 2009 3:56 PM

Answer 1

Hi Alpesh,
How about throwing MARC into the mix. I notice that you are searching with plant, storage location and division. Table MARC has an index on plant named WRK.
If you join MARA and MARC to first determine all the materials that qualify for the given plant and division combination, you can access table MCHB with material (MARA-MATNR), plant (MARC-WERKS) and storage location (FG01) i.e. the first 4 fields in the primary key of table MCHB.
I could not test this theory out because in our system we do not have any data in table MCHB. Your select executes quickly on my system.
Please let me know how this panned out.