Re: schema sizes

Thanks, it works fine!!

Morus Walter wrote:

> Daniel Rubio writes:
>
>>Hi all!
>>
>>We want to obtain the size of the diferent schemas of some databases.
>>We've installed dbsize and it works fine, but it returns the size of all
>>the database.
>>Exists some method to determine the size of a concrete schema?
>>
>
> I use
> SELECT nspname,
> sum(relpages * cast( 8192 AS bigint )) as "table size",
> sum( ( select sum(relpages)
>       from pg_class i, pg_index idx
>       where i.oid = idx.indexrelid
>       and t.oid=idx.indrelid ) ) * cast( 8192 AS bigint ) as "index size",
> sum ( relpages * cast( 8192 AS bigint ) + ( select sum(relpages)
>       from pg_class i, pg_index idx
>       where i.oid = idx.indexrelid
>       and t.oid=idx.indrelid ) * cast( 8192 AS bigint ) ) as "size"
> FROM pg_class t, pg_namespace
> WHERE relnamespace = pg_namespace.oid
> and pg_namespace.nspname not like 'pg_%'
> and pg_namespace.nspname != 'information_schema'
> and relkind = 'r' group by nspname;
>
> to sum over all tables/indices of a schema.
> Note that the input for the sum is relpages in pg_class and this value
> is only updated by VACUUM, ANALYZE und CREATE INDEX.
> So you should analyze all tables before you execute the statement.
>
>


--
********************************************************
Daniel Rubio Rodríguez
OASI (Organisme Autònom Per la Societat de la Informació)
c/ Assalt, 12
43003 - Tarragona
Tef.: 977.244.007 - Fax: 977.224.517
e-mail: drubio a oasi.org
********************************************************