Обсуждение: triggers, rules and alter table

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triggers, rules and alter table

От
Sergey Karin
Дата:
Hi, List!

I'm using pg 8.1.0

this version allows to create triggers on INSERT, DELETE and UPDATE and also allows to create rules on SELECT, UPDATE, INSERT and DELETE.
But I want to do some actions on ALTER TABLE ... ADD COLUMN and ALTER TABLE ... DROP COLUMN events. How I can handle that events in 8.1.x version?


Sergey Karin

Re: triggers, rules and alter table

От
Richard Huxton
Дата:
Sergey Karin wrote:
> Hi, List!
>
> I'm using pg 8.1.0
>
> this version allows to create triggers on INSERT, DELETE and UPDATE and also
> allows to create rules on SELECT, UPDATE, INSERT and DELETE.
> But I want to do some actions on ALTER TABLE ... ADD COLUMN and ALTER TABLE
> ... DROP COLUMN events. How I can handle that events in 8.1.x version?

You can't. There aren't any hooks to attach triggers to for those actions.

Could you wrap your ALTER TABLE commands in a function?

--
   Richard Huxton
   Archonet Ltd