zoukankan      html  css  js  c++  java
  • Oracle 创建同义词

    1:以sysdba登陆系统,首先创建一个用户

    SQL> conn /as sysdba
    Connected.
    SQL> create user yshy identified by yshy;
    
    User created.
    
    SQL> grant connect to yshy;
    
    Grant succeeded.
    
    SQL> grant resource to yshy;
    
    Grant succeeded.
    
    SQL> grant create synonym to yshy;
    
    Grant succeeded.
    
    SQL> 

    2:切换到yshy用户,并创建同义词针对scott.emp

    SQL> conn yshy/yshy
    Connected.
    
    SQL> create synonym y_emp for scott.emp;
    
    Synonym created.

    3:查询同义词,提示表或视图不存在。

    SQL> select * from y_emp;
    select * from y_emp
                  *
    ERROR at line 1:
    ORA-00942: table or view does not exist
    
    
    SQL> 

    4:登陆scott把emp表的查询权限授权给yshy用户。

    SQL> conn scott/tiger
    Connected.
    SQL> grant select on emp to yshy;
    
    Grant succeeded.
    
    SQL> conn yshy/yshy;
    Connected.
    SQL> select * from y_emp;

    【删除同义词】
    DROP [PUBLIC] SYNONYM [schema.]sysnonym_name

  • 相关阅读:
    Linux命令——find
    Linux命令——locate
    python模块:datetime
    python模块:json
    python模块:shelve
    python模块:shutil
    python模块:sys
    python:OS模块
    str.index()与str.find()比较
    python模块:re
  • 原文地址:https://www.cnblogs.com/yshyee/p/4088652.html
Copyright © 2011-2022 走看看