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.
> 
> 


-- 
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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
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