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custom error message on check constraint.


custom error message on check constraint.

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keil.asta
keil.asta
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Hi, I'm just wonder what is the best way or is it even possible to have a customer error message for a simple check constraint such as.

ALTER TABLE tblJobsCL
ADD CONSTRAINT CK_PlannedEndDate_2
CHECK (PlannedEndDate >= PlannedStartDate)

All the error message handling can I find in my books or online seem to be for triggers.

Thank for your help
Asta
GilaMonster
GilaMonster
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You can't put a custom error in a check constraint.

Two options.
1) (recommended)
Use a check constraint, have the front end app handle the error and produce whatever custom error that you want

2) use a trigger.

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


keil.asta
keil.asta
SSC Rookie
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Group: General Forum Members
Points: 35 Visits: 55
Thanks, glad I asked, saves me looking for something that does not exist.

Asta :-)
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