Select Command taking a lot of time to execute

Dear Experts,
My below SELECT command taking a lot of time to execute.
      SELECT wid
                   matl_desc
                   INTO TABLE open_wid FROM zwb_table
                   WHERE ( weight2 = 0 OR weight2 IS NULL ).
Table : zwb_table contains around 7 Lacs records. That's why taking a lot of time . I have also Indexed the table zwb_table with field WID & WEIGHT2 . (zwb_table contains only WID as Primary Key Field)
Structure of Internal Table : open_wid ->
                                         wid LIKE zwb_table-wid,
                                         matl_desc LIKE zwb_table-matl_desc,
Please suggest me how to Improve the Performance of the above Select command.
Thanks in Advance
JACK

Hi Jack,
you are having morethan 7lack records in z table. it is not good practice fetching all the records into internal table and restricting with where clause in loop statement.
I hope you already created secondary index combination of primary key.
check you select query fetching records based on index you have created in ST05.
Refer below link for your program is using index that you have created.
Re: Indexing
Regards,
Peranandam
Edited by: peranandam chinnathambi on Apr 7, 2009 8:38 AM

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