oracle常用sql語句

正在看的ORACLE教程是:oracle常用sql語句。SQL*Plus system/manager
2、顯示當前連接用戶
SQL> show user
3、查看系統擁有哪些用戶
SQL> select * from all_users;
4、新建用戶並授權
SQL> create user a identified by a;（默認建在SYSTEM表空間下）
SQL> grant connect,resource to a;
5、連接到新用戶
SQL> conn a/a
6、查詢當前用戶下所有對象
SQL> select * from tab;
7、建立第一個表
SQL> create table a(a number);
8、查詢表結構
SQL> desc a
9、插入新記錄
SQL> insert into a values(1);
10、查詢記錄
SQL> select * from a;
11、更改記錄
SQL> update a set a=2;
12、刪除記錄
SQL> delete from a;
13、回滾
SQL> roll;
SQL> rollback;
14、提交
SQL> commit;
用戶授權:
GRANT ALTER ANY INDEX TO "user_id "
GRANT "dba " TO "user_id ";
ALTER USER "user_id " DEFAULT ROLE ALL
創建用戶:
CREATE USER "user_id " PROFILE "DEFAULT " IDENTIFIED BY " DEFAULT TABLESPACE
"USERS " TEMPORARY TABLESPACE "TEMP " ACCOUNT UNLOCK;
GRANT "CONNECT " TO "user_id ";
用戶密碼設定:
ALTER USER "CMSDB " IDENTIFIED BY "pass_word "