Re: FOREIGN KEY AND INDEXEX
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)
Список
Дерево обсуждения
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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