Ya, I know I could pass them in.  Just wanted to know if they were already 
floating around out there as globals or something.  That way I wouldn't have to 
drop/recreate the constraint itself.  

These would be constraint violations where the name of the constraint being 
violated is in the returned message (should there be a violation).  I named the 
constraints to identify the column and describe the nature of the problem.  Not 
sure how to capture that info if the trigger disallowed the value.

Also, I need to defer constraint checking for some transactions.  Making the 
trigger sensitive to this deferral is not something that I wanted to devote a 
lot of time to.  It just seemed more natural to keep this as a check 
constraint.  



-----Original Message-----
From: Jerry Sievers [mailto:gsiever...@comcast.net] 
Sent: Thursday, March 31, 2011 4:14 PM
To: Gauthier, Dave
Cc: pgsql-general@postgresql.org
Subject: Re: [GENERAL] Access to NEW.column outside of a trigger function.

"Gauthier, Dave" <dave.gauth...@intel.com> writes:

> I have a check constraint that runs a PlPgsql function which returns a
> pass/ fail status which the constraint uses to allow or disallow the
> value.  This is not a trigger function.  It's just a plain-ole
> PlPgsql.  Is there a way I can read (not write, just read) the
> NEW.column values that a trigger function would normally have access
> to?

Sure.  Just pass them into your validator func as parameters.

But why are you avoiding use of a trigger here?

> Thanks in Advance for any help.
>

-- 
Jerry Sievers
Postgres DBA/Development Consulting
e: gsiever...@comcast.net
p: 305.321.1144

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