Обсуждение: update within trigger function
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
@utoRevenue™
A Dominion Enterprises Company
480 Pleasant Street
Suite B200
Lee, MA 01238
413-243-4800 Home Office
413-243-4809 Corporate Fax
msteben@autorevenue.com
Visit our new website at
www.autorevenue.com
IMPORTANT: The information contained in this e-mail message is confidential and is intended only for the named addressee(s). If the reader of this e-mail message is not the intended recipient (or the individual responsible for the delivery of this e-mail message to the intended recipient), please be advised that any re-use, dissemination, distribution or copying of this e-mail message is prohibited. If you have received this e-mail message in error, please reply to the sender that you have received this e-mail message in error and then delete it. Thank you.
On Mon, Jul 23, 2007 at 02:05:20PM -0400, Mark Steben wrote: > 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? See NEW on http://www.postgresql.org/docs/8.2/interactive/plpgsql-trigger.html -- Jim Nasby decibel@decibel.org EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)