Querry for MKPF and MSEG

Question

Hi,
In mY report,
I have BUDAT as select-options and
         WERKS as select-options.
Based on MBLNR, MJAHR from MKPF into table it_mkpf where Budat in s_BUDAT.
after that I am fetching MSEG data using for all entries in it_mkpf where werks in s_werks.
for low date range it is working fine.
For higher date range ,I am getting around 2 Lacs of records in MKPF , but while fetching MSEG ,Its getting dump with message endless Loop.
How can increase my performance.
Is there any Function Module to fetch data.
Can anybody suggest me.
Thanks
kumar n

Answer 1

Hi Kumar,
I have the same situation,
where I will have 1.5 lakhs minimum records from MKPF every month,,,
now my total database is nearly 35 million records till date from 1998.
and getting records from MKPF is not difficult its very easy even 35 million records,,,
But after getting from MSEG by MKPF is Hell,,,,
but I see Joins are far better , best in these cases,,,
So after that i have written a Code snippet in "Code-gallery" in SAP -Wiki, with title Joins are Better in some cases
Author: Dileep Kumar
Submitted: 11.02.2009
Description  : Join Statement is the best in some cases as shown below than For All Entries. So Dont Forget about Joins Simply. Keep trying with joins
sometimes, where you can get a better performance.
Dont forget about joins simply like that due to performances. Now in this case(A Business Requirement) Joins is the best than FOR ALL ENTRIES.
TYPES: BEGIN OF TY_MKPF ,
        MBLNR TYPE MKPF-MBLNR,          "Material document
        MJAHR TYPE MKPF-MJAHR,
        BUDAT TYPE MKPF-BUDAT,          "Posting Date in the document
      END OF TY_MKPF.
TYPES: BEGIN OF TY_MSEG1 ,
        MJAHR TYPE MKPF-MJAHR,
        BUDAT TYPE MKPF-BUDAT,          "Posting Date in the document
        MBLNR TYPE MSEG-MBLNR,          "Material document
        MATNR TYPE MSEG-MATNR,          "Material Number
        ZEILE TYPE MSEG-ZEILE,          "Item in material document
        BWART TYPE MSEG-BWART,          "Movement Type
        CHARG TYPE MSEG-CHARG,          "Batch Number
        EBELN TYPE MSEG-EBELN,          "PO #
        SHKZG TYPE MSEG-SHKZG,          "Debit/Credit Indicator
        MENGE TYPE MSEG-MENGE,          "Quantity
        MEINS TYPE MSEG-MEINS,          "UOM
        DMBTR TYPE MSEG-DMBTR,          "Amount in local currency
        WAERS TYPE MSEG-WAERS,          "Currency Key
      END OF TY_MSEG1.
TYPES: BEGIN OF TY_MSEG ,
        MBLNR TYPE MSEG-MBLNR,          "Material document
        MATNR TYPE MSEG-MATNR,          "Material Number
        ZEILE TYPE MSEG-ZEILE,          "Item in material document
        BWART TYPE MSEG-BWART,          "Movement Type
        CHARG TYPE MSEG-CHARG,          "Batch Number
        EBELN TYPE MSEG-EBELN,          "PO #
        SHKZG TYPE MSEG-SHKZG,          "Debit/Credit Indicator
        MENGE TYPE MSEG-MENGE,          "Quantity
        MEINS TYPE MSEG-MEINS,          "UOM
        DMBTR TYPE MSEG-DMBTR,          "Amount in local currency
        WAERS TYPE MSEG-WAERS,          "Currency Key
      END OF TY_MSEG.
DATA : IT_MSEG TYPE TABLE OF TY_MSEG, WA_MSEG LIKE LINE OF IT_MSEG.
DATA : IT_MKPF TYPE TABLE OF TY_MKPF, WA_MKPF LIKE LINE OF IT_MKPF.
DATA : IT_MSEG1 TYPE TABLE OF TY_MSEG1, WA_MSEG1 LIKE LINE OF IT_MSEG1.
SELECT-OPTIONS :
   S_BUDAT FOR MKPF-BUDAT," OBLIGATORY,       " Posting Date.
   S_MATNR FOR MSEG-MATNR," OBLIGATORY.       " Material No.
   S_WERKS FOR MSEG-WERKS." OBLIGATORY,       " Plant
Start-of-Selection.
*<<<<<<<<<<<<<<<<<<<<
    SELECT MBLNR MJAHR BUDAT
      INTO TABLE IT_MKPF
      FROM MKPF
      WHERE BUDAT IN S_BUDAT.
  IF IT_MKPF IS NOT INITIAL.
    SELECT MBLNR MATNR ZEILE BWART CHARG EBELN SHKZG MENGE MEINS DMBTR WAERS
      FROM MSEG
      INTO TABLE IT_MSEG
      FOR ALL ENTRIES IN IT_MKPF
      WHERE MBLNR = IT_MKPF-MBLNR AND
            MJAHR = IT_MKPF-MJAHR AND
            MATNR IN S_MATNR AND
            WERKS IN S_WERKS .
  ENDIF.
*compared to the above For all entries, below Join can perform well &
*Good for 2nd & third runs are much faster as they store data in Buffer memory..
*<<<<<<<<<<<<<<<<<
  SELECT  AMJAHR  ABUDAT BMBLNR BMATNR BZEILE BBWART B~CHARG
          BEBELN BSHKZG BMENGE BMEINS BDMBTR BWAERS
          INTO TABLE IT_MSEG1
          FROM MKPF AS A INNER JOIN MSEG AS B ON AMBLNR = BMBLNR AND
                                                 AMJAHR = BMJAHR
          WHERE A~BUDAT IN S_BUDAT AND
                B~MATNR IN S_MATNR AND
                B~WERKS IN S_WERKS .
*<<<<<<<<<<<<<<<<<<
Thanks & regards,
Dileep .C