Best way to reduce the load on selct query?

Question

Hi,
i have a requirement where i have to fetch data from wlk1 based on some conditions but when i am doing select on wlk1 then it is taking more than 5 minutes to fetch data. please let me know how i can reduce the load on wlk1?
thanks,
AD
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Edited by: Rob Burbank on May 6, 2009 9:43 AM

Answer 1

Hi ,
Try this way....
Data : entries type standard table of < your table name > with Header line.
Table_name = your table name...
* read client dependant tables always with client
  SELECT SINGLE * FROM dd02l WHERE tabname = table_name AND as4local = 'A'.
  IF dd02l-clidep = 'X'.
    CONCATENATE sy-mandt gen_key INTO gen_key.
    keyln = STRLEN( gen_key ) * cl_abap_char_utilities=>charsize.
  ENDIF.
*  endselect.
  IF keyln NE 0 OR from_key = space.
    CALL 'C_GET_TABLE' ID 'TABLNAME'  FIELD table_name
                       ID 'INTTAB'    FIELD buf-*sys*
                       ID 'GENKEY'    FIELD gen_key
                       ID 'GENKEY_LN' FIELD keyln
                       ID 'DBCNT'     FIELD number_of_entries
                       ID 'BYPASS'    FIELD bypass_buffer.
  ELSE.
    CALL 'C_GET_TABLE' ID 'TABLNAME'  FIELD table_name
                       ID 'INTTAB'    FIELD buf-*sys*
                       ID 'FROM_KEY'  FIELD from_key
                       ID 'TO_KEY'    FIELD to_key
                       ID 'DBCNT'     FIELD number_of_entries
                       ID 'BYPASS'    FIELD bypass_buffer.
  ENDIF.
  CASE sy-subrc.
    WHEN 4.  RAISE table_empty.
    WHEN 8.  RAISE table_not_found.
    WHEN 12. RAISE internal_error.
  ENDCASE.
  DESCRIBE TABLE buf LINES number_of_entries.
  IF max_entries = 0. max_entries = number_of_entries. ENDIF.
  LOOP AT buf TO max_entries.
    entries = buf.
    APPEND entries.
  ENDLOOP.
regards,
Prabhudas