Provide alternative select statements to improve performance

Question

Hi Frnds
I want to improve the performance of my report. below statement is taking more time. Please provide any suggestions to include alternative statement for the below select statement.
SELECT H~CLMNO H~PNGUID P~PVGUID V~PNGUID AS V_PNGUID
           V~AKTIV V~KNUMV  P~POSNR  V~KATEG  AS ALTNUM   V~VERSN
         APPENDING CORRESPONDING FIELDS OF TABLE EX_WTYKEY_T
         FROM ( ( PNWTYH AS H
           INNER JOIN PNWTYV AS V ON V~HEADER_GUID   = H~PNGUID )
           INNER JOIN PVWTY  AS P ON P~VERSION_GUID  = V~PNGUID )
         FOR ALL ENTRIES IN lt_claim
        WHERE  H~PNGUID = lt_claim-pnguid
           AND V~AKTIV IN rt_AKTIV
           AND V~KATEG IN IM_ALTNUM_T.
Thanks
Amminesh.
Moderator message - Moved to the correct forum
Edited by: Rob Burbank on May 14, 2009 11:00 AM

Answer 1

Hi,
Copy the internal table lt_claim contents to another temp internal table.
lt_claim_temp[] = lt_claim[].
sort lt_claim_temp by pnguid.
delete adjacent duplicates from lt_claim_temp comparing pnguid.
SELECT HCLMNO HPNGUID PPVGUID VPNGUID AS V_PNGUID
           VAKTIV VKNUMV  PPOSNR  VKATEG  AS ALTNUM   V~VERSN
         APPENDING CORRESPONDING FIELDS OF TABLE EX_WTYKEY_T
         FROM ( ( PNWTYH AS H
           INNER JOIN PNWTYV AS V ON VHEADER_GUID   = HPNGUID )
           INNER JOIN PVWTY  AS P ON PVERSION_GUID  = VPNGUID )
         FOR ALL ENTRIES IN lt_claim_temp
        WHERE  H~PNGUID = lt_claim-pnguid
           AND V~AKTIV IN rt_AKTIV
           AND V~KATEG IN IM_ALTNUM_T.
refresh lt_claim_temp.