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AskSQLTeam
Ask SQLTeam Question
0 Posts |
 Posted - 2002-05-15 : 10:28:12
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| Hendrik writes "I having a problem figuring out the correct syntax for a column constraint. What I have to work with is: [table1.numeric_column1] BETWEEN [table2.numeric_column2] - 20 AND [table2.numeric_column2] + 20The idea is, when a number is entered into numeric_column1 I would like to ensure that the number entered is within the range of a column in another table subtracted by 20 and added by 20." |
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YellowBug
Aged Yak Warrior
616 Posts |
Posted - 2002-05-15 : 11:01:48
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| From BOL:A CHECK constraint can validate a column value only against a logical expression or another column in the same table. If your application requires that a column value be validated against a column in another table, you must use a trigger. |
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Correct check constraint syntax?