Re: Can't drop constraint?

Поиск
Список
Период
Сортировка
От Michael Monnerie
Тема Re: Can't drop constraint?
Дата
Msg-id 200905060745.56455@zmi.at
обсуждение исходный текст
Ответ на Re: Can't drop constraint?  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Can't drop constraint?  (Carol Walter <walterc@indiana.edu>)
Re: Can't drop constraint?  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-admin
On Dienstag 05 Mai 2009 Tom Lane wrote:
> Apparently this is just an index, not a constraint (the difference
> being that it was made with CREATE INDEX, not ALTER TABLE ADD
> CONSTRAINT). Try

Is there a performance difference? Or is it just a matter of taste which
one you use? Technically, are they both indices, or is the constraint a
check that's executed on insert/update, but doesn't store the values?

mfg zmi
--
// Michael Monnerie, Ing.BSc    -----      http://it-management.at
// Tel: 0660 / 415 65 31                      .network.your.ideas.
// PGP Key:         "curl -s http://zmi.at/zmi.asc | gpg --import"
// Fingerprint: AC19 F9D5 36ED CD8A EF38  500E CE14 91F7 1C12 09B4
// Keyserver: wwwkeys.eu.pgp.net                  Key-ID: 1C1209B4


В списке pgsql-admin по дате отправления:

Предыдущее
От: Tom Lane
Дата:
Сообщение: Re: Can't drop constraint?
Следующее
От: samana srikanth
Дата:
Сообщение: Pg_dump consistency.