Re: [HACKERS] why the DB file size does not reduce when 'delete'the data in DB?

----- Original Message -----
From: The Hermit Hacker <scrappy(at)hub(dot)org>
To: Jaruwan Laongmal <jaruwan(at)gits(dot)net(dot)th>
Cc: <pgsql-hackers(at)postgresql(dot)org>; <pgsql-sql(at)postgresql(dot)org>
Sent: Friday, March 02, 2001 8:04 PM
Subject: Re: [HACKERS] why the DB file size does not reduce when 'delete'the data in DB?

> On Fri, 2 Mar 2001, Jaruwan Laongmal wrote:
>
> > I had deleted a very large number of records out of my SQL table in order to
> > decrease the harddisk space. But after I use command 'ls -l
> > /usr/local/pgsql/data/base/', it is found that the size of concerning files
> > do not reduce due to the effect of 'delete' SQL command. What should I do
> > if I would like to decrease the harddisk space?
>
> VACUUM
>
>

could anyone remove this nasty bug in 7.2? this is already a big pain and is the reason
why am I still using MySQL in my product server. another nasty thing is it does not
allow me to reference table in another database. sigh.

Regards,
XuYifeng