Accessing to BSIS in efficient manner

Question

Hi ,
I developed a new GL report for a particular FY period (option for full period too) which access BSIS table - It works fine for a
smaller GL account (which has less no of records) but runs for ever for a big GL account (due to huge volume of records) -
Can some one advice a better way to do the same ?? - My select query looks similar to the below one
  select (bsis_fields) from bsis
    appending corresponding fields of table i_bsis_pkg_rv
                         where bukrs   eq p_bukrs
                         and   hkont      eq p_hkont
                         and   GJAHR    le p_pgjahr
                         and   budat       in s_budat
                         and   blart         in s_blart    "   ( 'RV','ZR')
                         and   (bsis_where).
Thanks in advance.
Regards
Rajesh.

Answer 1

You could try a join of BKPF and BSIS, because BKPF has an index on posting date and one for document type, and BSIS has an index for access by document number. Then hope that the optimizer chooses the best starting table for the access based on G/L account (BSIS) or posting date (BKPF) and the specific selection criteria, whatever provides the better selectivity. In this special case it might be necessary to work with histograms instead of normal table statistics, because even though you have an EQ condition for one G/L account, it could be better to select by BKPF first for a narrow posting date range, based on actual data distribution.
If you select an entire year for a big G/L account -> run in background
Thomas