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db2 query help

 
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vijay
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Joined: 09 May 2003
Posts: 131
Topics: 64
PostPosted: Wed Aug 31, 2005 8:28 am    Post subject: db2 query help Reply with quote
Hi ,
I'm coding a CICS screen wherein I've to display all the records on the transaction table.

key - columna + columnb
data - columnc and columnd
and the screen display should be sorted by columnc , columnd ,columna and columnb.

SQL used:

Code:
select
   where  columnc || columnd || columna || columnb
            >=  :columnc || :columnd || :columna || :columnb
order by  columnc , columnd , columna, columnb



The logic works fine except that it takes long time to display because it is going thru a tablespace scan.

would it make any difference if I have another index on the table with
columnc , columnd , columna, columnb

the current index is columna and columnb.


Thanks,

Vijay
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kolusu
Site Admin
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Joined: 26 Nov 2002
Posts: 12375
Topics: 75
Location: San Jose
PostPosted: Wed Aug 31, 2005 8:45 am    Post subject: Reply with quote
Vijay,

Wasn't this question similar to the question you posted 5 days ago?

http://www.mvsforums.com/helpboards/viewtopic.php?t=4733

Did you try out manas's suggestion?

Kolusu
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