Before Insert trigger in sql server


I have to check the value of the record before inserting into the table,through application have received some records,now need to create trigger which says if its a particular case then it should not allow to insert,otherwise let it insert.

Is it possible in sql server i.e case of before insert or update in table using triggers?
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Scott PletcherSenior DBACommented:
Sort of.  You can do an INSTEAD OF INSERT trigger.  But if you then decide you do want to INSERT, you have to do the INSERT yourself, with code in that trigger.

You could also do an AFTER INSERT trigger and, if it's a particular case, issue a ROLLBACK to cancel the transaction, which would include the INSERT but might include other SQL activities as well.

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Vitor MontalvãoMSSQL Senior EngineerCommented:
Depending on your case, you can not even need a trigger if you create a check constraint instead.
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