查看postgresql数据库用户系统权限、对象权限的方法

1、查看某用户的系统权限

SELECT * FROM  pg_roles WHERE rolname='postgres';

2、查看某用户的表权限

select * from information_schema.table_privileges where grantee='postgres';

3、查看某用户的usage权限

select * from information_schema.usage_privileges where grantee='postgres';

4、查看某用户在存储过程函数的执行权限

select * from information_schema.routine_privileges where grantee='postgres';

5、查看某用户在某表的列上的权限

select * from information_schema.column_privileges where grantee='postgres'; 

6、查看当前用户能够访问的数据类型

select * from information_schema.data_type_privileges ; 

7、查看用户自定义类型上授予的USAGE权限

select * from information_schema.udt_privileges where grantee='postgres';