Re: add column specify position

From: Johan Nel <johan(dot)nel(at)xsinet(dot)co(dot)za>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: add column specify position
Date: 2010-02-03 05:32:06
Message-ID: hkb1pd$b5e$1@news.eternal-september.org
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Hi Scott
Scott Frankel wrote:
>
> Hi all,
>
> Is it possible to specify a position when adding a column to a table?
No not AFAIK.

> I want to swap one column for another without losing the column's
> position. eg: given that 'foo' is the 5th column in an 8 column table,
> I want to replace it with a 'bar' column at column 5.
>
> ALTER TABLE qwe DROP COLUMN foo;
> ALTER TABLE qwe ADD COLUMN bar;

ALTER TABLE qwe RENAME COLUMN foo TO bar;

That does imply the COLUMN TYPE stays the same though... The help file
does have examples in the ALTER TABLE section how to change the TYPE of a
column.

HTH,

Johan Nel
Pretoria, South Africa.

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