Re: FOREIGN KEY AND INDEXEX

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От
Alan Hodgson
Тема
Re: FOREIGN KEY AND INDEXEX
Дата
Msg-id
200810281426.43844@hal.medialogik.com
Ответ на
FOREIGN KEY AND INDEXEX (JORGE MALDONADO)
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FOREIGN KEY AND INDEXEX "JORGE MALDONADO" <jorgemal1960@gmail.com>
Re: FOREIGN KEY AND INDEXEX Alan Hodgson <ahodgson@simkin.ca>
On Tuesday 28 October 2008, "JORGE MALDONADO"  
wrote:
> I need to define an index for a table but such an index already exists as
> a foreign key.
> I have fk_state (a foreign key) and I need a common index (ix_state).
> Should I define the index or does the foreign key work like an index too?

You need the index. Primary keys and unique constraints are implemented as 
indexes, but not foreign keys.

-- 
Alan
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