| From: | Hannu Krosing <hannu(at)tm(dot)ee> |
|---|---|
| To: | Jaruwan Laongmal <jaruwan(at)gits(dot)net(dot)th> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: [HACKERS] why the DB file size does not reduce when 'delete' the data in DB? |
| Date: | 2001-03-02 15:03:05 |
| Message-ID: | 3A9FB629.4080601@tm.ee |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers pgsql-sql |
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?
Run the command VACUUM;
This will do the actual removal of deleted records. DELETE just marks
them as deleted
> I am looking forward to your response. Thank you very much for any help.
> -
> Jaruwan
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2001-03-02 15:37:51 | WAL & RC1 status |
| Previous Message | Thomas Lockhart | 2001-03-02 13:30:38 | Re: [HACKERS] why the DB file size does not reduce when 'delete' the data in DB? |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Jan Wieck | 2001-03-02 15:34:02 | Re: Help creating rules/triggers/functions |
| Previous Message | Salvador Mainé | 2001-03-02 14:57:11 | Re: dates in functions |