答复: [GENERAL] Need Help

Started by 马庆over 19 years ago3 messagesgeneral
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#1马庆
ma.qing@staples.sh.cn

Maybe U can't get the disk usage info, but you can try command "explain"

-----邮件原件-----
发件人: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] 代表 JM
发送时间: 2006年12月28日 10:43 MARK
收件人: pgsql-general@postgresql.org
抄送: Pgsql-Performance (E-mail)
主题: [GENERAL] Need Help

how can i get the disk usage for each table? can i do it via SQL?

Thanks,

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#2Shoaib Mir
shoaibmir@gmail.com
In reply to: 马庆 (#1)
Re: [GENERAL] 答复: [GENERAL] Need Help

This should help you get the disk usage for a table:

select pg_size_pretty(pg_relation_size('tablename'));

---------------
Shoaib Mir
EnterpriseDB (www.enterprisedb.com)

Show quoted text

On 12/28/06, 马庆 <ma.qing@staples.sh.cn> wrote:

Maybe U can't get the disk usage info, but you can try command "explain"

-----邮件原件-----
发件人: pgsql-general-owner@postgresql.org [mailto:
pgsql-general-owner@postgresql.org] 代表 JM
发送时间: 2006年12月28日 10:43 MARK
收件人: pgsql-general@postgresql.org
抄送: Pgsql-Performance (E-mail)
主题: [GENERAL] Need Help

how can i get the disk usage for each table? can i do it via SQL?

Thanks,

Mailing-Lists

---------------------------(end of broadcast)---------------------------
TIP 4: Have you searched our list archives?

http://archives.postgresql.org/

---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
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#3Ron Johnson
ron.l.johnson@cox.net
In reply to: Shoaib Mir (#2)
Re: Re: [GENERAL] ??: [GENERA

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What about empty space freed up by VACUUM?

On 12/28/06 03:11, Shoaib Mir wrote:

This should help you get the disk usage for a table:

select pg_size_pretty(pg_relation_size('tablename'));

- --
Ron Johnson, Jr.
Jefferson LA USA

Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
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