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Self Join Referential Integrity
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Information générale
Forum:
Microsoft SQL Server
Catégorie:
Conception bases de données
Versions des environnements
SQL Server:
SQL Server 2008
Divers
Thread ID:
01523616
Message ID:
01523642
Vues:
26
>>Should this do it:
>>
>>
CREATE TRIGGER PersonsDeleteDependents 
>>   ON  Persons
>>   FOR DELETE
>>AS 
>>BEGIN
>>	-- SET NOCOUNT ON added to prevent extra result sets from
>>	-- interfering with SELECT statements.
>>	SET NOCOUNT ON;
>>
>>    -- Insert statements for trigger here
>>    delete Persons
>>    from Persons
>>    inner join deleted on deleted.personid = persons.parentid
>>
>>END
>>
>>?
>
>The trigger looks OK, but did you have recursive triggers enabled?
>How many levels of parenting you may have?
>What if you delete a child that has siblings?

I am thinking we want to disable recursive triggers and implement the whole loop logic in one trigger.
If it's not broken, fix it until it is.


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