You are here: Re: constraint expression for unique keys « MsSQL Server « IT news, forums, messages
Re: constraint expression for unique keys

Posted by HandersonVA on 10/02/82 11:51

can you explain what "NONCLUSTERED" is doing there? is that for
non-relation to a field in other table?

Alexander Kuznetsov wrote:
> an excerpt from BOL:
>
> "C. Using UNIQUE constraints
> UNIQUE constraints are used to enforce uniqueness on nonprimary key
> columns. The following example enforces a restriction that the Name
> column of the Product table must be unique.
>
> Copy Code
> Name nvarchar(100) NOT NULL
> UNIQUE NONCLUSTERED
>
> "

 

Navigation:

[Reply to this message]


Удаленная работа для программистов  •  Как заработать на Google AdSense  •  England, UK  •  статьи на английском  •  PHP MySQL CMS Apache Oscommerce  •  Online Business Knowledge Base  •  DVD MP3 AVI MP4 players codecs conversion help
Home  •  Search  •  Site Map  •  Set as Homepage  •  Add to Favourites

Copyright © 2005-2006 Powered by Custom PHP Programming

Сайт изготовлен в Студии Валентина Петручека
изготовление и поддержка веб-сайтов, разработка программного обеспечения, поисковая оптимизация