PG數據庫空間大小及數據庫對象占用空間大小

select pg_size_pretty(pg_database_size('lrisk')); --查詢數據庫剩余空間

select pg_database.datname,pg_size_pretty(pg_database_size('lrisk')) AS size
from pg_database;

select * from pg_database;

SELECT relname, relpages FROM pg_class ORDER BY relpages DESC; --查詢數據庫對象占用空間從大到小排序