[代码] Oracle--在sqlplus中用system/svse连接 然后授权(grant dba to scott) 再将权限授予svse用户(grant connect,resource to svse)----建立表空间svsespace并建立svse用户,建立如下表格 employee--建立表空间svsespacecreate tablespace svsespacedatafile 'd:\svse.dbf'size 5m;--建立svse用户create user svseidentified by svse123default tablespace svsespace;--建立如下表格 employeecreate table employee( empno number(8) primary key, ename varchar2(20), job varchar2(20), sal number(8), deptno number(4) references dept(deptno)); --建立如下表格Dept表create table dept( deptno number(4) primary key, dname varchar2(20), location varchar2(20));--为Dept表添加数据insert into dept values(10,'ACCOUNTING','武汉');insert into dept values(20,'NEW YORK','北京');insert into dept values(30,'BOSTON','上海'); --为employee表添加数据insert into employee values(10001,'史密斯','职员',1000,10);insert into employee values(10002,'琼斯','分析员',3000,20);insert into employee values(10003,'爱德华','经理',5000,10);insert into employee values(10004,'福特','职员',1200,10);insert into employee values(10005,'艾伦','销售员',10500,20);insert into employee values(10006,'凯文','职员',1250,30);insert into employee values(10007,'鲍勃','分析员',3200,30);insert into employee values(10008,'贝克','经理',11500,30);insert into employee values(10009,'斯蒂文','会计师',6000,10);insert into employee values(10010,'苏珊','职员',600,20); select * from employee;select * from dept; --为employee表的empno字段创建序列create sequence seq_nostart with 10011increment by 1; ----1.1 使用PLSQL实现数据的添加,要求接受输入,然后将数据加到数据库declare myename employee.ename%type; myjob employee.job%type; mysal employee.sal%type; mydeptno employee.deptno%type; begin myename := '&请输入员工姓名'; myjob := '&请输入员工工作'; mysal := &请输入员工工资; mydeptno := &请输入部门编号; insert into employee values(seq_no.nextval,myename,myjob,mysal,mydeptno); dbms_output.put_line('添加成功');end;--1.2 添加数据时，要求如果工资高于10000或低于800,则抛出异常，并打印异常信息declare myename employee.ename%type; myjob employee.job%type; mysal employee.sal%type; mydeptno employee.deptno%type; errorsal exception;begin myename := '&请输入员工姓名'; myjob := '&请输入员工工作'; mysal := &请输入员工工资; mydeptno := &请输入部门编号; --判断输入的工资是否大于10000或者小于800,如果是则抛出异常 if mysal < 800 then raise errorsal; elsif mysal > 10000 then raise errorsal; else insert into employee values(seq_no.nextval,myename,myjob,mysal,mydeptno); dbms_output.put_line('添加成功'); end if;exception when errorsal then dbms_output.put_line('您输入的工资范围必须在800到10000之间');end;--1.3 在该模式下，创建一个序列SEQ_ORDER，该序列从1开始，到9999为止，且不能循环计数create sequence seq_orderstart with 1increment by 1maxvalue 9999nocycle;--1.4 设计一个视图，能显示所有员工编号、名称、工作、薪水、部门姓名，部门所在地。--给svse用户创建视图的权限(在cmd中输入grant create view to svse 赋予用户svse创建视图的权限)create or replace view myviewas select a.*,location from employee a,dept b where a.deptno = b.deptno;--查看视图select * from myview;--2. 用存储过程接受两个数相除并且显示结果，如果第二个数为0，则显示消息“除数不能为0”。create or replace procedure getNum(num1 number,num2 number)as num number; begin num := num1 / num2; end;--测试declare num1 number; num2 number; num number := num1 / num2; begin num1 := &请输入第一个数; num2 := &请输入第二个数; if num2 = 0 then dbms_output.put_line('除数不能为0'); else getNum(num1,num2); dbms_output.put_line('所得值为；' || num1/num2); end if; end;--3. 编写一个存储过程，接受一个员工名，从emp表中显示该雇员的工作岗位与薪水，若输入的雇员名不存在，显示“该雇员不存在”信息。create or replace procedure getInfo(myno emp.empno%type,myjob out emp.job%type,mysal out emp.sal%type)asbegin select job,sal into myjob,mysal from emp where empno = myno; dbms_output.put_line('获得成功!'); end;--测试declare mysal emp.sal%type; myjob emp.job%type; inputempno emp.empno%type;begin inputempno := &请输入员工编号; getInfo(inputempno,myjob,mysal); dbms_output.put_line('员工工作:'||myjob ||' 员工工资:'||mysal);exception when no_data_found then dbms_output.put_line('您输入的员工编号有误,请核对后重新输入...'); end;--4. 使用游标，接受一个部门号，从emp表中显示该部门的所有雇员的姓名，工作和薪水(带参数的游标)declare type mycurtype is record(myename emp.ename%type,myjob emp.job%type,mysal emp.sal%type); cursor mycur(mydeptno emp.deptno%type) is select ename,job,sal from emp where deptno = mydeptno; emprow mycurtype; theno emp.deptno%type;begin theno := &请输入部门编号; dbms_output.put_line('输出部门员工信息如下...'); open mycur(theno); loop fetch mycur into emprow; exit when mycur%notfound; dbms_output.put_line('姓名：'||emprow.myename||' 工作:'||emprow.myjob||' 薪水'||emprow.mysal); end loop; close mycur;end;--5. 编写一个程序块，从emp表中对名字以”A”或”S”开头的所有雇员按他们基本薪水的10％给他们补贴， --如果该雇员的总工资(工资＋补贴)超过1500元，按总工资的5％扣除个人所得税，并输出员工的应得工资。declare cursor mycur is select * from emp for update; mysal emp.sal%type;begin update emp set sal = sal * 1.1 where ename in( select ename from emp where ename like 'A%' or ename like 'S%'); for emprow in mycur loop if emprow.sal + emprow.comm > 1500 then mysal := (emprow.sal + emprow.comm) * 0.95; dbms_output.put_line('该员工的姓名为:'||emprow.ename||' 该员工的实际工资为：'||emprow.sal||' 该员工应得工资为:'||mysal); end if; end loop;end;----查询emp表中ename以A或者S开头的名字select ename,sal from emp where ename like 'A%' or ename like 'S%'; /*****************************************************************/--6. 当更新emp表中的comm字段的值为空时，自动修改comm字段的值为’0’。create or replace trigger tri_updateafter update on empfor each rowbeginend;select comm,ename,sal from emp;/*****************************************************************/--7. 创建触发器，实现当某个部门被删除时，就把相应员工部门的名改为NULL。 create or replace trigger tri_deleteafter delete on deptfor each rowdeclare cursor mycur is select * from emp where deptno = :old.deptno for update; begin for emprow in mycur loop update emp set deptno = null where deptno = emprow.deptno; dbms_output.put_line('修改成功！'); end loop;end;--测试 delete from dept where deptno = 10select * from dept; select * from emp;
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