Re: Create Table Dialog: Change Column after creation/Reorder Columns

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От Dave Page
Тема Re: Create Table Dialog: Change Column after creation/Reorder Columns
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Msg-id AANLkTil-JoWrDaKFeqPAKTjjKPtapRBfh7Qs8VrhmTYm@mail.gmail.com
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Ответ на Re: Create Table Dialog: Change Column after creation/Reorder Columns  (Magnus Hagander <magnus@hagander.net>)
Ответы Re: Create Table Dialog: Change Column after creation/Reorder Columns  (Magnus Hagander <magnus@hagander.net>)
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On Mon, Jun 21, 2010 at 4:18 PM, Magnus Hagander <magnus@hagander.net> wrote:

> I think that's an acceptable solution, provided it works well. *IFF*
> it is very very very very clear to the user that this is what happens
> (extra warning dialog(s), please!). A lot of people have tables small
> enough that this is not a problem.
>
> And remember that it's not quite as trivial as one would initially
> think - you still need to recreate all indexes and foreign keys and
> sutff. But it's certainly doable.

And views and functions and rules and triggers.... Just handling that
lot would be a significant amount of code.

My main concerns though, are the space requirements for a large table
and the locking that would be required. This is not something you
would attempt on a large or busy table unless you were certifiably
insane.

--
Dave Page
EnterpriseDB UK: http://www.enterprisedb.com
The Enterprise Postgres Company

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