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Home -> Community -> Mailing Lists -> Oracle-L -> Question about Constraint
Hallo,
I would like to gets ome help on this:
I have this table
Id Companynumber First Name LastName Type
1 123 Jim Andersson 1 2 234 Tom Perkins 2 3 565 Henry Ford 1
I would like to have a constraint so when I try to add and the same companynumber that already exists(for instance 234) I am not allowed to do this if the filed Type has the value 1. So if I add a companynumber which already exists and the Type is 2, then I should be allowed to add this companynumber.
Maybe this is simple but woul dreally appreciate some help onhow to write this.
Roland
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Author:
INET: roland.skoldblom_at_ica.se
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