SQL Server add a column constraint to limit data to -1 to 1

Posted by Seth Spearman on Stack Overflow See other posts from Stack Overflow or by Seth Spearman
Published on 2009-11-11T21:35:35Z Indexed on 2010/06/14 17:22 UTC
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Filed under:

sql

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sql-server

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tsql

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constraints

Hello,

I want to constrain a SQL Server decimal column to only allow -1,0,1 as valid values.

Can you show me the SQL syntax for adding such a constraint. (I would like to know how to do it in both the CREATE TABLE statement and/or the ALTER TABLE ADD CONSTRAINT).

Or can this only be accomplished in a trigger?

Seth

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