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Avoiding multiple cascade paths
Message
De
22/08/2008 15:17:50
 
 
Information générale
Forum:
Microsoft SQL Server
Catégorie:
Conception bases de données
Versions des environnements
SQL Server:
SQL Server 2005
Divers
Thread ID:
01340693
Message ID:
01341224
Vues:
16
Hi,

I added a check for @@ROWCOUNT > 0 in the trigger which cured the problem. So would, for instance. a DELETE trigger fire even if there were no actual deletions ?

Regards,
Viv

>A trigger fires once per SQL statement regardless of how many records are affected by the statement.
>You may want or required to take some action in a trigger when 0 record are affected.
>
>>
>>I was looking at using the 'INSTEAD OF' trigger but this in an AFTER is simpler. The only thing that threw me for a while was that the trigger fired when there was nothing to insert (ie INSERT INTO ...... (SELECT ......) caused the trigger to fire even if the select returned no records - that didn't seem very logical to me?
>>
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