21-Oracle入门之同义词

基本概念

一般套路

CREATE [PUBLIC] SYNONYM synonym
FOR    object;

创建同义词

CREATE SYNONYM  d_sum
FOR  dept_sum_vu;
Synonym Created.

删除同义词

DROP SYNONYM d_sum;
Synonym dropped.

关于dba管理员分配权限

ALTER USER "HR" ACCOUNT UNLOCK
GRANT SELECT  ON  "HR"."EMPLOYEES" TO "SCOTT"

select * from  hr.employees;
SQL> select count(*) from  hr.employees;

为hr.employees创建一个别名
create synonym hremp for hr.employees;
*
第 1 行出现错误:
ORA-01031: 权限不足

grant create synonym to scott; --让scott具有创建同义词的权限
GRANT CREATE ANY SYNONYM TO "SCOTT"
select count(*) from  hremp;