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My reference to a SELECT was because in Plan Cache this UDF was the most expensive and the distant second place was a SELECT.
-----Original Message-----
From: Darren Strong [mailto:darren@xxxxxxxxx]
Sent: Friday, May 10, 2019 9:20 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: UDF bad performance
I second that the DETERMINISTIC clause should make a difference if you're not already using it. I'm also wondering how you're using this returned value. Is it simply in the select portion of the statement, or are you using it in the where clause, where you weren't doing that in your comparison statement. I ask, because when you say "longer than an index-based select statement", it implies either an advanced index, or, you're not using the right term.
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Salsman, Michael
Sent: Friday, May 10, 2019 10:13 AM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: UDF bad performance
Try defining the function as DETERMINISTIC.
Michael Salsman
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