oracle查询某张表的外键（最终解决办法）

执行下面的sql语句查询外键：

select b.table_name, b.column_name from user_constraints a
inner join user_cons_columns b on a.constraint_name = b.constraint_name
 where a.r_constraint_name in
  (
   select e.constraint_name from user_constraints e  where e.table_name = 'T_POWER_POINT'
  )

说明：表名大写T_POWER_POINT