RE: RPG SQL and Cursors

Jeff,

You may have misunderstood that comment. I believe the poster was saying if all you are doing is reading a record at a time, then you are using the wrong tool. He isn't opposed to using a cursor if you are doing some aggregate function such as sum, avg, etc. However, if you just want to use I/O, pick the logical file that matches your order by and use if statements to skip records you don't want to include. Use control break logic to sum, avg, etc.

SQL would be handy in this situation as I'd imagine that you order and select criteria would be different. For optimum performance, have an index for both your order by and selection.

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Young
Sent: Thursday, November 18, 2010 12:35 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: RPG SQL and Cursors

I have seen it indicated in many posts in the past that if you are using cursors
in SQL, you are doing something wrong.
If I have only RPGLE and CL to work with and SQL-CLI is not an option, how would
I select multiple rows for a set of conditions and return them in an ordered
condition using embedded SQL with a CURSOR?

Thanks,
 
Jeff Young
Sr. Programmer Analyst
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