SELECT DISTINCT is a grouping, i.e. costs additional performance.
Just a simple SELECT to read the first row that machtes the search criteria
is the best solution!!!
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
Modernization ? Education ? Consulting on IBM i
Database and Software Architect
IBM Champion since 2020
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
"Train people well enough so they can leave, treat them well enough so they
don't want to. " (Richard Branson)
"Learning is experience ? everything else is only information!" (Albert
Einstein)
-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Dave
Sent: Wednesday, 28 August 2024 10:10
To: rpg400-l@xxxxxxxxxxxxxxxxxx
Subject: Re: Embedded sql how to test for no lines
Thanks for the help.
Hadn't realised that the count function would not (normally) have returned
sqlcode 100 if the count was 0.
Also, while testing, I did not realise that the host variables could be
populated even when sqlcode indicates an error.
Ex, select distinct mycode into :myvar etc, where more than 1 line is
returned.
On Tue, 27 Aug 2024 at 17:10, Dave <dfx1@xxxxxxxxxxxxxx> wrote:
Hi,
what's the "right" way of doing this after execution of the sql statement?
Use sql count() and check for 0?
Get the condition of the first line that doesn't satisfy the search
criteria and check that?
Ignore all the host variables and check for sqlcode = 100?
thanks
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