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Re: Help with triggers/FrontBase (was: sequential numbering across more instances)
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Re: Help with triggers/FrontBase (was: sequential numbering across more instances)


  • Subject: Re: Help with triggers/FrontBase (was: sequential numbering across more instances)
  • From: Ondřej Čada <email@hidden>
  • Date: Wed, 20 Aug 2008 16:44:08 +0200

Well, thanks a lot, but this actually is not a problem at all, for the table already exists and contains lots of non-NULL numbers.

The real problem is that the update trigger does not work (or, more precisely, that I don't see what I am doing wrong and how to fix it) :(

SELECT MAX(column) FROM table
will return null when there are no values yet for that column. I believe you need to do something like:
SELECT CASE WHEN MAX(column) IS NOT NULL THEN MAX(column) ELSE 0 END FROM table

Or simpler: SELECT ISNULL(MAX(column), 0) FROM table

Best, --- Ondra Čada OCSoftware: email@hidden http://www.ocs.cz private email@hidden http://www.ocs.cz/oc



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References: 
 >sequential numbering across more instances (From: Ondřej Čada <email@hidden>)
 >Re: sequential numbering across more instances (From: Florijan Stamenkovic <email@hidden>)
 >Re: sequential numbering across more instances (From: Ondřej Čada <email@hidden>)
 >Re: sequential numbering across more instances (From: Chuck Hill <email@hidden>)
 >Re: sequential numbering across more instances (From: Guido Neitzer <email@hidden>)
 >Re: sequential numbering across more instances (From: Chuck Hill <email@hidden>)
 >Re: sequential numbering across more instances (From: Ondřej Čada <email@hidden>)
 >Re: sequential numbering across more instances (From: Chuck Hill <email@hidden>)
 >Re: sequential numbering across more instances (From: Mike Schrag <email@hidden>)
 >Re: sequential numbering across more instances (From: Chuck Hill <email@hidden>)
 >Re: sequential numbering across more instances (From: Alan Ward <email@hidden>)
 >Re: sequential numbering across more instances (From: Chuck Hill <email@hidden>)
 >Re: sequential numbering across more instances (From: Ondřej Čada <email@hidden>)
 >Help with triggers/FrontBase (was: sequential numbering across more instances) (From: Ondřej Čada <email@hidden>)
 >Re: Help with triggers/FrontBase (was: sequential numbering across more instances) (From: Florijan Stamenkovic <email@hidden>)
 >Re: Help with triggers/FrontBase (was: sequential numbering across more instances) (From: Francis Labrie <email@hidden>)

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