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SQL trigger


SQL trigger

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Jeff Moden
Jeff Moden
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wat3575 (11/22/2013)
We are using a CRM system and I have had trouble creating a trigger that would automatically update another field on a record. The first table I am working with is Sales that has a key3 field. Within this field we insert Sales Rep names from a user table. Within this users table we have another column with the users ID. So what I would like to do is create a trigger that would recognize when a Sales Rep name is added to this key3 field and then autoupdate another field with the associated USERID. Thank you for the help.


I'm going to recommend NOT using a trigger to do this.
I'm also going to recommend NOT using a stored procedure to do this.

In fact, I'm going to recommend NOT doing this at all.

It's a form of denormalization AND unnecessary duplication of data. Further, if there's ever a name change for the given ID, you'll need a separate one-off process to change it. Even if that never happens, it's still an unnecessary duplication of data and should be avoided because of all of the rules of normalization.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

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