Re: constraint expression for unique keys
- From: "--CELKO--" <jcelko212@xxxxxxxxxxxxx>
- Date: 29 Jun 2006 09:07:25 -0700
if i have a table which defines a rule as "combination of two field must be unique", how can I write this in a constraint expression section? <<
CONSTRAINT unique_location UNIQUE (x, y)
any good learning links, references, or book recommandations? <<
I recommend buying all of my books :)
.
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