Posted by Erland Sommarskog on 09/27/92 11:51

HandersonVA (handersonva@hotmail.com) writes:
> 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 u_tbl UNIQUE (col1, col2)




--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx

• Next in forum: Re: right padding equivalent
• Prev in forum: Re: SQLserver on SBS2003 returns old data
• Thread view: Re: constraint expression for unique keys

[Reply to this message]