查看兩個用戶的表是否一樣多,用戶名要大寫

select count(a.table_name),count(b.table_name) from
(select table_name from all_all_tables where owner='ZBWEB') a
left join
(select table_name from all_all_tables where owner='ZBWEBTEST') b
on a.table_name = b.table_name