Re: Trigger before delete does fire before, but delete doesn't not happen - Mailing list pgsql-general

From Stéphane A. Schildknecht
Subject Re: Trigger before delete does fire before, but delete doesn't not happen
Date
Msg-id 493519AF.5010403@postgresqlfr.org
Whole thread Raw
In response to Re: Trigger before delete does fire before, but delete doesn't not happen  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Trigger before delete does fire before, but delete doesn't not happen
List pgsql-general
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Tom Lane a écrit :
> Adrian Klaver <aklaver@comcast.net> writes:
>> Thanks for the explanation. Just so I am clear,the act of updating the row in p_commandeligne_ad creates a new tuple
forthe row with id of 1. This means the original statement "delete from commande where id=1" runs against a version of
therow that no longer exists and becomes a no-op statement. This happens because the trigger was run as BEFORE and
changedthe row from under the original statement. 
>
> Right.
>
>             regards, tom lane

Thanks for having helped me understand better why it couldn't be a logical way
of acting.

Best regards,
- --
Stéphane Schildknecht
PostgreSQLFr - http://www.postgresql.fr
Dalibo - http://www.dalibo.com
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