> -----Original Message----- > From: pgsql-general-owner@xxxxxxxxxxxxxx [mailto:pgsql-general- > owner@xxxxxxxxxxxxxx] On Behalf Of Steve Crawford > Sent: Monday, March 28, 2011 12:22 PM > To: Yang Zhang > Cc: pgsql-general@xxxxxxxxxxxxxx > Subject: Re: Disk space usage analyzer? > > On 03/25/2011 07:58 PM, Yang Zhang wrote: > > Is there any tool for breaking down how much disk space is used by > > (could be freed by removing) various tables, indexes, selected rows, > > etc.? Thanks! > > > > You can use the pg_class table and the pg_relation_size (and optionally > the pg_size_pretty) functions to get that info. This query gives table > sizes and percent of overall usage. > > BUT! It is only looking at tables, not indexes. If you want to know how > much space will be freed by dropping a table, you will have to modify > this query to total up the index space used for all the indexes > associated with each table. pg_total_relation_size() will give you the size of the table and the indexes on it. Brad. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
