Oracle笔记 十三、PL/SQL面向对象之package

--将方法和过程用包定义

create or replace package pkg_emp

as

       --输入员工编号查询出员工信息

       procedure pro_findInfo(

         in_empno emp2.empno%type,

         out_name out emp2.ename%type,

         out_sal out emp2.sal%type          

       );

       --根据部门编号修改本部门员工工资

       procedure pro_editInfo(

         in_emp_record emp2%rowtype,

         out_flag out boolean

       );

       --输入新员工信息并保存到数据库

       procedure pro_addInfo(

         in_emp_new_record emp2%rowtype

       );

       --统计工资信息

       function fun_sum(

         num_a number,

         num_b number

       ) return number;

end pkg_emp;

--实现包

create or replace package body pkg_emp

as

       --输入员工编号查询出员工信息

       procedure pro_findInfo(

         in_empno emp2.empno%type,

         out_name out emp2.ename%type,

         out_sal out emp2.sal%type          

       )

       as

       begin

         select ename, sal into out_name, out_sal from emp2 where empno = in_empno;

       end pro_findInfo;

       --根据部门编号修改本部门员工工资

       procedure pro_editInfo(

         in_emp_record emp2%rowtype,

         out_flag out boolean

       )

       is         

       begin

         update emp2 set sal = in_emp_record.sal where deptno = in_emp_record.deptno;

         out_flag := true;

         /*exception

           when no_data_found then

             out_flag := false;

         commit;*/

         if (sql%rowcount < 1) then

           out_flag := false;

         else

           out_flag := true;

           commit;

         end if;

       end pro_editInfo;

       --输入新员工信息并保存到数据库

       procedure pro_addInfo(

         in_emp_new_record emp2%rowtype

       )

       as

         temp_sql varchar2(200);

       begin

         temp_sql := ‘insert into emp2(empno, ename, sal, comm, deptno) values(:1, :2, :3, :4, :5)‘;

         execute immediate temp_sql using in_emp_new_record.empno, in_emp_new_record.ename,

               in_emp_new_record.sal, in_emp_new_record.comm, in_emp_new_record.deptno;

         commit;

       end;

       --统计工资信息

       function fun_sum(

         num_a number,

         num_b number

       ) return number

       is

       begin

         return num_a + num_b;

       end fun_sum;

end pkg_emp;

--测试1

declare

       out_name emp2.ename%type;

       out_sal emp2.sal%type;

begin

     pkg_emp.pro_findInfo(7369, out_name, out_sal);

     dbms_output.put_line(out_name);

     dbms_output.put_line(out_sal);

end;  

--测试2

select * from emp2;

declare

       in_emp_record emp2%rowtype;

       flag boolean;

begin

     in_emp_record.deptno := &部门编号;

     in_emp_record.sal := &员工工资;

     pkg_emp.pro_editInfo(in_emp_record, flag);

     if (flag = false) then

       dbms_output.put_line(‘no‘);

     else

       dbms_output.put_line(‘yes‘);

     end if;

end;   

--测试3

declare

       new_emp_record emp2%rowtype;

begin

     new_emp_record.empno := &员工编号;

     new_emp_record.ename := &姓名;

     new_emp_record.sal := &工资;

     new_emp_record.comm := &奖金;

     new_emp_record.deptno := &部门编号;

     pkg_emp.pro_addInfo(new_emp_record);

end;

--测试4

declare

     sum_emp number;  

begin

     select pkg_emp.fun_sum(sal, nvl(comm, 0)) into sum_emp from emp2

     where empno = &员工编号;

     dbms_output.put_line(‘员工总工资:‘ || sum_emp);

end;