Re: Alter table to "on update cascade"

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От Andreas Kretschmer
Тема Re: Alter table to "on update cascade"
Дата
Msg-id 20101117174932.GA4779@tux
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Ответ на Re: Alter table to "on update cascade"  (Richard Broersma <richard.broersma@gmail.com>)
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Richard Broersma <richard.broersma@gmail.com> wrote:

> On Wed, Nov 17, 2010 at 8:43 AM, David Fetter <david@fetter.org> wrote:
>
> > You can do it like this:
> >
> > BEGIN;
> > ALTER TABLE foo DROP CONSTRAINT your_constraint;
> > ALTER TABLE foo ADD FOREIGN KEY ...;
> > COMMIT;
>
> The nice thing about the ALTER TABLE statement is that you can do it
> in one command:
>
>
> ALTER TABLE foo
> DROP CONSTRAINT your_constraint,
>  ADD CONSTRAINT your_constraint FOREIGN KEY ...
>               ON UPDATE CASCADE ON DELETE RESTRICT;

yeah, cool ;-)


Andreas
--
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