Comments on: Resize a column in a PostgreSQL table without changing data

By: Joe Van Dyk

Joe Van Dyk — Thu, 15 Mar 2012 21:37:40 +0000

I believe 9.1 will let you do this without a table rewrite, but indexes will still need to be rebuilt.

Sniptools — Wed, 27 Apr 2011 05:51:48 +0000

googol, that will take a long time as it goes through the entire table — each and every row.

The approach I suggest will be done in microseconds.

Ranjit — Tue, 12 Apr 2011 09:31:31 +0000

Good .
But this can also be achived by below syntax

ALTER TABLE ALTER COLUMN TYPE (new length);

googol — Tue, 25 Jan 2011 18:09:38 +0000

ALTER TABLE auth_permission ALTER "name" TYPE character varying(255);

Ronald — Thu, 30 Dec 2010 10:28:55 +0000

Super, thanx! It even works when the field is included in a view, and normally you need to drop the view to alter the field.

AquilaX’s development blog - Resize column in postgres without recreating — Wed, 17 Feb 2010 14:08:44 +0000

Farhan Ansari — Wed, 24 Jun 2009 06:06:13 +0000

Very helpful… thanks

Mon, 18 May 2009 14:35:50 +0000

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