Oracle 12c 数据库中scott用户不存在的解决方法
时间:2021-07-01 10:21:17
帮助过:4人阅读
创建数据表
CREATE TABLE dept (
deptno NUMBER(
2)
CONSTRAINT PK_DEPT
PRIMARY KEY,
dname VARCHAR2(
14) ,
loc VARCHAR2(
13)
) ;
CREATE TABLE emp (
empno NUMBER(
4)
CONSTRAINT PK_EMP
PRIMARY KEY,
ename VARCHAR2(
10),
job VARCHAR2(
9),
mgr NUMBER(
4),
hiredate DATE,
sal NUMBER(
7,
2),
comm NUMBER(
7,
2),
deptno NUMBER(
2)
CONSTRAINT FK_DEPTNO
REFERENCES DEPT
);
CREATE TABLE bonus (
enamE VARCHAR2(
10) ,
job VARCHAR2(
9) ,
sal NUMBER,
comm NUMBER
) ;
CREATE TABLE salgrade (
grade NUMBER,
losal NUMBER,
hisal NUMBER
);
-- 插入测试数据 —— dept
INSERT INTO dept
VALUES (
10,
‘ACCOUNTING‘,
‘NEW YORK‘);
INSERT INTO dept
VALUES (
20,
‘RESEARCH‘,
‘DALLAS‘);
INSERT INTO dept
VALUES (
30,
‘SALES‘,
‘CHICAGO‘);
INSERT INTO dept
VALUES (
40,
‘OPERATIONS‘,
‘BOSTON‘);
-- 插入测试数据 —— emp
INSERT INTO emp
VALUES (
7369,
‘SMITH‘,
‘CLERK‘,
7902,to_date(
‘17-12-1980‘,
‘dd-mm-yyyy‘),
800,
NULL,
20);
INSERT INTO emp
VALUES (
7499,
‘ALLEN‘,
‘SALESMAN‘,
7698,to_date(
‘20-2-1981‘,
‘dd-mm-yyyy‘),
1600,
300,
30);
INSERT INTO emp
VALUES (
7521,
‘WARD‘,
‘SALESMAN‘,
7698,to_date(
‘22-2-1981‘,
‘dd-mm-yyyy‘),
1250,
500,
30);
INSERT INTO emp
VALUES (
7566,
‘JONES‘,
‘MANAGER‘,
7839,to_date(
‘2-4-1981‘,
‘dd-mm-yyyy‘),
2975,
NULL,
20);
INSERT INTO emp
VALUES (
7654,
‘MARTIN‘,
‘SALESMAN‘,
7698,to_date(
‘28-9-1981‘,
‘dd-mm-yyyy‘),
1250,
1400,
30);
INSERT INTO emp
VALUES (
7698,
‘BLAKE‘,
‘MANAGER‘,
7839,to_date(
‘1-5-1981‘,
‘dd-mm-yyyy‘),
2850,
NULL,
30);
INSERT INTO emp
VALUES (
7782,
‘CLARK‘,
‘MANAGER‘,
7839,to_date(
‘9-6-1981‘,
‘dd-mm-yyyy‘),
2450,
NULL,
10);
INSERT INTO emp
VALUES (
7788,
‘SCOTT‘,
‘ANALYST‘,
7566,to_date(
‘13-07-87‘,
‘dd-mm-yyyy‘)
-85,
3000,
NULL,
20);
INSERT INTO emp
VALUES (
7839,
‘KING‘,
‘PRESIDENT‘,
NULL,to_date(
‘17-11-1981‘,
‘dd-mm-yyyy‘),
5000,
NULL,
10);
INSERT INTO emp
VALUES (
7844,
‘TURNER‘,
‘SALESMAN‘,
7698,to_date(
‘8-9-1981‘,
‘dd-mm-yyyy‘),
1500,
0,
30);
INSERT INTO emp
VALUES (
7876,
‘ADAMS‘,
‘CLERK‘,
7788,to_date(
‘13-07-87‘,
‘dd-mm-yyyy‘)
-51,
1100,
NULL,
20);
INSERT INTO emp
VALUES (
7900,
‘JAMES‘,
‘CLERK‘,
7698,to_date(
‘3-12-1981‘,
‘dd-mm-yyyy‘),
950,
NULL,
30);
INSERT INTO emp
VALUES (
7902,
‘FORD‘,
‘ANALYST‘,
7566,to_date(
‘3-12-1981‘,
‘dd-mm-yyyy‘),
3000,
NULL,
20);
INSERT INTO emp
VALUES (
7934,
‘MILLER‘,
‘CLERK‘,
7782,to_date(
‘23-1-1982‘,
‘dd-mm-yyyy‘),
1300,
NULL,
10);
-- 插入测试数据 —— salgrade
INSERT INTO salgrade
VALUES (
1,
700,
1200);
INSERT INTO salgrade
VALUES (
2,
1201,
1400);
INSERT INTO salgrade
VALUES (
3,
1401,
2000);
INSERT INTO salgrade
VALUES (
4,
2001,
3000);
INSERT INTO salgrade
VALUES (
5,
3001,
9999);
-- 事务提交
COMMIT;
范例:查询emp表数据(指令之后要使用“;”完结)
SELECT * FROM emp ;
范例:使用ed命令调用本机记事本程序
ED mldn
范例:使用SYS用户登录
CONN sys/change_on_install AS SYSDBA ;
范例:在sys用户中查询c##scott.emp表数据
SELECT * FROM c##scott.emp ;
范例:使用sys用户以管理员方式登录
CONN sys/change_on_install AS SYSDBA ;
范例:将CDB的切换到PDB
ALTER SESSION SET CONTAINER=pdbmldn ;
范例:打开PDBMLDN可插入数据库
ALTER DATABASE pdbmldn OPEN ;
范例:通过CDB打开PDBMLDN可插入数据库
ALTER PLUGGABLE DATABASE pdbmldn OPEN ;
范例:在PDBMLDN下察看scott与sh用户是否存在
SELECT username FROM dba_users WHERE username=‘SCOTT‘ OR username=‘SH‘ ;
范例:查询scott用户
SELECT * FROM scott.emp ;
范例:切换回CDB容器
ALTER SESSION SET CONTAINER=CDB$ROOT ;
范例:察看dept的表结构
DESC dept ;
范例:使用copy指令
HOST COPY D:\mldn.sql D:\hello.sql
范例:查询emp表
SELECT * FROM emp ;
Oracle 12c 数据库中scott用户不存在的解决方法
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