oracle我以前的资料2.2

/******************************1.根据部门编号查询部门信息*****************************/
declare
  type empcur is ref cursor;
  v_cur empcur;
  v_type naemp%rowtype;
  v_no int;
begin
  v_no:=&请输入部门编号;
  open v_cur for select * into v_type from naemp where empno=v_no;
  fetch v_cur into v_type; 
  while v_cur%found
    loop
      dbms_output.PUT_LINE(v_type.empno||' '||v_type.empdeptno||' '||v_type.empname||' '||v_type.empsal||' '||v_type.empmanager);
      fetch v_cur into v_type; 
    end loop;
  close v_cur;
end;
/****************************2.根据编号查信息和确定工资等级*************************/
declare
  type emp_cur is ref cursor;
  v_cur emp_cur;
  v_sal naemp.EMPSAL%type;
  v_no naemp.empno%type;
  v1 nanemp%rowtype;
  v_grade varchar2(4);
begin
  /*根据编号查工资*/
  v_no:=&请输入部门编号;
  open v_cur for select empsal  from naemp where empno=v_no;
  fetch v_cur into v_sal;
  dbms_output.PUT_LINE(v_sal);
  close v_cur;
  /*确定工资等级*/
  open v_cur for select * from nanemp;
  fetch v_cur into v1;
  while v_cur%found
    loop
       v_grade:=case
                     when  v1.empsal>=10000 then 'A'
                     when  v1.empsal>=8000 then 'B'
                     when  v1.empsal>=5000 then 'C'
                     when  v1.empsal>=2000 then 'D'
                     else 'E'
                end;
      dbms_output.PUT_LINE(v1.empname||'的工资等级为'||v_grade);
      fetch v_cur into v1;
    end loop;
  close v_cur;
end;
/*****带有异常处理的工资等级查询***********/
declare
  type v_cursor is ref cursor;
  v_cur v_cursor;
  v_row naemp%rowtype;
  v_level varchar2(2);
  v_no number;
begin
  v_no:=&请输入部门编号;
  open v_cur for select empno,empname,empdeptno,empsal,empmanager from naemp where empno=v_no;
  fetch v_cur into v_row;
  if v_cur%notfound then
     raise no_data_found;
  end if;
  dbms_output.PUT_LINE(v_row.empsal);
  v_level:=case
              when v_row.empsal>=10000 then 'A'
              when v_row.empsal>=8000 then 'B'
              when v_row.empsal>=5000 then 'C'
              when v_row.empsal>=2000 then 'D'
              else 'E'
            end;
    dbms_output.PUT_LINE('该雇员目前的工资等级为:'||v_level);
    close v_cur;
exception
   when no_data_found then
     dbms_output.PUT_LINE('对不起！没有这个雇员!');
   when others then
     dbms_output.PUT_LINE('未知错误!');
end;