-- 建立使用者
CREATE USER thirdqueryuser WITH PASSWORD 'thirduser@#123.';
--賦予登入許可權
grant connect on database hncyjjq to thirdqueryuser; 
--系統表許可權清空:防止使用者登入上去就能檢視
revoke all on pg_class from public;
revoke all on pg_tablespace from public;
revoke all on pg_user from public;
revoke all on pg_roles from public
 
;
--賦予schema使用許可權
grant usage on schema public to thirdqueryuser;
--賦予使用者部分表查詢許可權
GRANT SELECT ON TABLE tb_hncyjjq,tb_hncyjjqgd,tb_hncyjjqgd_hccg,tb_hncyjjqpd1,tb_hncyjjqpd1_hccg,tb_hncyjjqpewg1,tb_hncyjjqpewg1_hccg TO thirdqueryuser;

--重新賦予schema許可權
grant all on pg_class to public;
grant all on pg_tablespace to
 
 public;
grant all on pg_user to public;
grant all on pg_roles to public;

--刪除使用者需先清空許可權
revoke all on database db_hncyjjq from cyjjqqueryuser;
revoke all on tb_hncyjjq from cyjjqqueryuser;
ALTER TABLE tb_hncyjjq OWNER TO jcjg_test;
DROP user cyjjqqueryuser