PostgreSQL查看数据库对象大小
1、查看某个数据库大小
select pg_size_pretty(pg_database_size('tzqdb'));
2、查看多个数据库大小
select pg_database.datname
,pg_size_pretty (pg_database_size(pg_database.datname)) AS size
from pg_database
order by pg_database_size(pg_database.datname) desc;
3、按顺序查看索引大小
select indexrelname
,pg_size_pretty(pg_relation_size(relid))
from pg_stat_user_indexes
where 1=1
-- and schemaname='public'
order by pg_relation_size(relid) desc;
4、查看所有对象的大小
select relname
,pg_size_pretty(pg_relation_size(relid))
from pg_stat_user_tables
where 1=1
-- and schemaname='public'
order by pg_relation_size(relid) desc;
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