Re: delete column

From: Mathieu Arnold <mat(at)mat(dot)cc>
To: "Hillensbeck, Preston" <PHillensbeck(at)sfbcic(dot)com>
Cc: "'pgsql-general(at)postgresql(dot)org'" <pgsql-general(at)postgresql(dot)org>
Subject: Re: delete column
Date: 2002-04-27 10:10:11
Message-ID: 10439662.1019909411@tot.in.t-online.fr
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

--On vendredi 26 avril 2002 15:49 -0500 "Hillensbeck, Preston"
<PHillensbeck(at)sfbcic(dot)com> wrote:

> There isn't a DROP COLUMN function yet, but you can do this...
>
> SELECT ... -- select all columns but the one you want to remove
> INTO TABLE new_table
> FROM old_table;
> DROP TABLE old_table;
> ALTER TABLE new_table RENAME TO old_table;
>
> This is straight out of Bruce Momjian's book, so you can give him credit
> for this :)

this is not really good, as you loose all defaults from the table.
I believe that
CREATE TABLE new_table (fields without the one you want);
INSERT INTO new_table SELECT ... FROM old_table;
DROP TABLE old_table;
ALTER TABLE new_table RENAME to old_table;

--
Mathieu Arnold

In response to

Browse pgsql-general by date

  From Date Subject
Next Message Francois Suter 2002-04-27 10:26:09 Re: pid gets overwritten in OSX
Previous Message Lincoln Yeoh 2002-04-27 10:06:41 Re: intel vs amd benchmark for pg server part 2