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update within trigger function

From: "Mark Steben" <msteben(at)autorevenue(dot)com>
To: <pgsql-admin(at)postgresql(dot)org>
Subject: update within trigger function
Date: 2007-07-23 18:05:20
Message-ID: 001501c7cd54$089c33b0$b501a8c0@D1RPQZB1 (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
Hello listers,


We have 'table a' which has defined to it an 'after insert or update'
trigger function

That inserts to 'table b', obviously for every update or insert of table a.
The challenge

I have now is to update a new date column on 'table a' with a value coming
out of

Another inhouse written function within the trigger function.  But I cannot
use the UPDATE 

statement within the update trigger function for fear of an infinite loop.  

All I need to do is to populate the date field of the row that is currently
being processed by the trigger function.  

Is there a command within plpgsql that can help me with this?


This seems like an elementary question, but I am a very elementary user of

Postgres functions.  Thank you for your time,


Mark Steben

Senior Database Administrator
A Dominion Enterprises Company
480 Pleasant Street
Suite B200
Lee, MA 01238
413-243-4800 Home Office 
413-243-4809 Corporate Fax

msteben <blocked::mailto:name(at)autorevenue(dot)com>

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Subject: varchar vs text columns
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