Performanc Issue with KNVV table in report

Question

Hi,
There is a report doing querry on KNVV and taking 93% of the database time. It retreives around 3 lacs records form this table and sometimes give time out error also.
All the primary keys are meeting and all required fields are getting selected from the table.
Is there any way out to improve the performance in this case. Would it be a good idea to create a secondary index on this table.
I would really appriciate if any one can help me out on this.
Many thanks in Advance.
Regards
Ria

Answer 1

Hi Ria,
That looks to me about as efficient as you can make it.
Try not to use into corresponding fields if you can help it. That should improve performance a bit.
Maybe you can try the following:
data: begin of t_reqd occurs 0,
        kunnr  like knvv-kunnr,
        bzirk  like knvv-bzirk,
      end of t_reqd.
* Because we are selecting KUNNR and BZIRK and T_REQD has
* KUNNR and BZIRK defined IN THAT ORDER we can just use
* INTO TABLE. This will improve performance.
select kunnr bzirk
       from knvv
       into table t_reqd
       where kunnr in s_kunnr and
             vkorg eq w_vkorg and
             vtweg eq w_vtweg and
             spart eq w_spart.
delete t_reqd where not bzirk in s_bzirk.
Hope this helps.
Cheers,
Pat.
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