Re: Wiki Page Draft for upcoming release - Mailing list pgsql-hackers

On 2014-03-18 12:52:49 -0700, Josh Berkus wrote:
> On 03/18/2014 12:35 PM, Andres Freund wrote:
> > I still think a rewriting noop ALTER TABLE ... ALTER COLUMN col TYPE
> > old_type USING (col); is the only real thing to do.
> 
> Then why wouldn't VACUUM FULL work?

Please read the referenced message and children. It will use
rewriteheap.c which tries to maintain the update chains.

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services