select schemaname,tablename,pg_relation_size(schemaname||‘.‘||tablename) as tabsize from pg_tables order by 3 desc; select schemaname,tablename,pg_table_size(schemaname||‘.‘||tablename) as tabsize from pg_tables order by 3 desc;
原文：http://www.cnblogs.com/chjbbs/p/6514028.html