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MS SQL 2005 Express :: Give non key field UNIQUE constraint?

Posted on 2007-11-21
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Last Modified: 2008-11-11
Hi Experts,

Please give me all the necessary steps in order to set a non-key field to unique constraint.
Note that I am using the "SQL Server Management Studio Express".

Thanks in advance!
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Question by:Marius0188
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LVL 25

Expert Comment

by:imitchie
ID: 20326407
do you mean just create unique constraint?
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LVL 25

Expert Comment

by:imitchie
ID: 20326415
if you have   create table tbl ( f1 int, f2 char(1), f3 bit, f4 datetime )
and you want to make sure that f4 (the datetime) is unique, you'd add a constraint using

alter table tbl add constraint uq_f4 unique(f4)
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by:
imitchie earned 2000 total points
ID: 20326423
so the steps:
in object explorer, find the database you want to work on. right-click, new query
type the SQL statement
press F5 to run the statement
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Author Comment

by:Marius0188
ID: 22168142
Can you provide the steps in the Studio Management Tool?
For example:
Select "Contstraints", right click and select "New Constraint".... etc.

Thanks
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