Re: Altering a column type w/o dropping views

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От Michael Fuhr
Тема Re: Altering a column type w/o dropping views
Дата
Msg-id 20080707125049.GA45839@winnie.fuhr.org
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Ответ на Altering a column type w/o dropping views  (Ow Mun Heng <Ow.Mun.Heng@wdc.com>)
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On Mon, Jul 07, 2008 at 05:53:58PM +0800, Ow Mun Heng wrote:
> I'm going to alter a bunch a tables columns's data type and I'm being
> forced to drop a view which depends on the the colum.

Why is that a problem?  If you keep your object definitions in files
(e.g., in a directory structure that's under revision control) then
you can write a deployment script like the following (to be executed
via psql):

BEGIN;
DROP VIEW view_name;
ALTER TABLE table_name ALTER column_name TYPE type_name;
\i views/view_name.sql
COMMIT;

--
Michael Fuhr

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