Trigger not firing

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Trigger not firing

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Gail Shaw SSC Guru Points: 1004514 More actions · Answer 1

Is there code in the trigger to check that a row has actually changed?

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

sql_lock SSCrazy Eights Points: 9375 More actions · Answer 2

Sample Trigger i use

IF(UPDATE(Authorised))

BEGIN

UPDATE

tbl

SET

IsAuthorised = (CASE WHEN inst.Authorised = 'Yes' THEN 1 ELSE 0 END)

FROM

TABLE tbl

INNER JOIN INSERTED inst ON tbl.TaskNumber = inst.TaskNumber

END

Gail Shaw SSC Guru Points: 1004514 More actions · Answer 3

sql_lock (6/2/2009)
IF(UPDATE(Authorised))

That trigger is not going to do anything for the update you posted. It will only execute if the Authorised column is updated, that's what the IF UPDATED line is there for.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass