Re: BETWEEN Node & DROP COLUMN
От | Rod Taylor |
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Тема | Re: BETWEEN Node & DROP COLUMN |
Дата | |
Msg-id | 1025699551.250.2.camel@jester обсуждение исходный текст |
Ответ на | Re: BETWEEN Node & DROP COLUMN ("Christopher Kings-Lynne" <chriskl@familyhealth.com.au>) |
Ответы |
Re: BETWEEN Node & DROP COLUMN
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Список | pgsql-hackers |
> > It should also be noted that an ALTER TABLE / SET TYPE implemented with > > the above idea with run into the 2x diskspace issue as well as take > > quite a while to process. > > I think that if the 'SET TYPE' operation is ever to be rollback-able, it > will need to use 2x diskspace. If it's overwritten in place, there's no > chance of fallback... I think that a DBA would choose to use the command > knowing full well what it requires? Better than not offering them the > choice at all! True, but if we did the multi-version thing in pg_attribute we may be able to coerce to the right type on the way out making it a high speed change.
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