Re: multi column foreign key for implicitly unique columns

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От
Markus Bertheau
Тема
Re: multi column foreign key for implicitly unique columns
Дата
Msg-id
1092836961.2630.3.camel@dicaprio.akademie1.de
Ответ на
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Дерево обсуждения
multi column foreign key for implicitly unique columns Markus Bertheau <twanger@bluetwanger.de>
Re: multi column foreign key for implicitly unique columns Oliver Elphick <olly@lfix.co.uk>
Re: multi column foreign key for implicitly unique columns Markus Bertheau <twanger@bluetwanger.de>
Re: multi column foreign key for implicitly unique columns Josh Berkus <josh@agliodbs.com>
Re: multi column foreign key for implicitly unique columns Markus Bertheau <twanger@bluetwanger.de>
Re: multi column foreign key for implicitly unique columns Jan Wieck <JanWieck@Yahoo.com>
Re: multi column foreign key for implicitly unique columns Markus Bertheau <twanger@bluetwanger.de>
Re: multi column foreign key for implicitly unique columns Jan Wieck <JanWieck@Yahoo.com>
Re: multi column foreign key for implicitly unique columns Markus Bertheau <twanger@bluetwanger.de>
Re: multi column foreign key for implicitly unique columns Rod Taylor <pg@rbt.ca>
Re: multi column foreign key for implicitly unique columns Stephan Szabo <sszabo@megazone.bigpanda.com>
Re: multi column foreign key for implicitly unique columns Tom Lane <tgl@sss.pgh.pa.us>
Re: multi column foreign key for implicitly unique columns Richard Huxton <dev@archonet.com>
Re: multi column foreign key for implicitly unique columns Tom Lane <tgl@sss.pgh.pa.us>
Re: multi column foreign key for implicitly unique columns Jan Wieck <JanWieck@Yahoo.com>
Re: multi column foreign key for implicitly unique columns Rod Taylor <pg@rbt.ca>
Re: multi column foreign key for implicitly unique columns Tom Lane <tgl@sss.pgh.pa.us>
Re: multi column foreign key for implicitly unique columns Richard Huxton <dev@archonet.com>
Re: multi column foreign key for implicitly unique columns Jan Wieck <JanWieck@Yahoo.com>
Re: multi column foreign key for implicitly unique columns Josh Berkus <josh@agliodbs.com>
Re: multi column foreign key for implicitly unique columns Jan Wieck <JanWieck@Yahoo.com>
Re: multi column foreign key for implicitly unique columns Josh Berkus <josh@agliodbs.com>
Re: multi column foreign key for implicitly unique columns Oliver Elphick <olly@lfix.co.uk>
Re: multi column foreign key for implicitly unique columns Jan Wieck <JanWieck@Yahoo.com>
Re: multi column foreign key for implicitly unique columns Josh Berkus <josh@agliodbs.com>
Re: multi column foreign key for implicitly unique columns Stephan Szabo <sszabo@megazone.bigpanda.com>
Re: multi column foreign key for implicitly unique columns Bruno Wolff III <bruno@wolff.to>
Re: multi column foreign key for implicitly unique columns Josh Berkus <josh@agliodbs.com>
Re: multi column foreign key for implicitly unique columns Richard Huxton <dev@archonet.com>
Re: multi column foreign key for implicitly unique columns Stephan Szabo <sszabo@megazone.bigpanda.com>
Re: multi column foreign key for implicitly unique columns Richard Huxton <dev@archonet.com>
Re: multi column foreign key for implicitly unique columns Stephan Szabo <sszabo@megazone.bigpanda.com>
Re: multi column foreign key for implicitly unique columns Tom Lane <tgl@sss.pgh.pa.us>
Re: multi column foreign key for implicitly unique columns Markus Bertheau <twanger@bluetwanger.de>
Re: multi column foreign key for implicitly unique columns Stephan Szabo <sszabo@megazone.bigpanda.com>
Re: multi column foreign key for implicitly unique columns Markus Bertheau <twanger@bluetwanger.de>
Re: multi column foreign key for implicitly unique columns Stephan Szabo <sszabo@megazone.bigpanda.com>
Re: multi column foreign key for implicitly unique columns Tom Lane <tgl@sss.pgh.pa.us>
FOREIGN KEY and AccessExclusiveLock Achilleus Mantzios <achill@matrix.gatewaynet.com>
Re: FOREIGN KEY and AccessExclusiveLock Tom Lane <tgl@sss.pgh.pa.us>
Re: FOREIGN KEY and AccessExclusiveLock Achilleus Mantzios <achill@matrix.gatewaynet.com>
Re: FOREIGN KEY and AccessExclusiveLock Achilleus Mantzios <achill@matrix.gatewaynet.com>
Re: FOREIGN KEY and AccessExclusiveLock Achilleus Mantzios <achill@matrix.gatewaynet.com>
Re: FOREIGN KEY and AccessExclusiveLock Achilleus Mantzios <achill@matrix.gatewaynet.com>
В Срд, 18.08.2004, в 15:33, Jan Wieck пишет:

> Meaning that not enforcing the uniqueness of those columns isn't an 
> option.

The thing is that the columns _are_ unique, there's just no unique
constraint on them. They are unique because there's a unique constraint
on a subset of these columns. So no additional uniqueness enforcing
needed.

-- 
Markus Bertheau 


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