oracle 漲工資

declare 
   cursor cemp is select empno ,sal from emp order by sal;
   --定義參數
   pempno emp.empno%type;
   psal emp.sal%type;
   countEmp number :=0;
   salTotal number;

   begin
     --獲得工資總額的初始值
     select  sum(sal) into salTotal from emp;
     --打開光標
     open cemp;
          loop
              -- 1.工資總額>5w
              exit when salTotal>50000;
              --取一個員工漲工資
              fetch  cemp into  pempno ,psal;
              --2.%notfound
              exit when cemp%notfound;

              --漲工資
              if salTotal+psal*1.1<50000 then
              update  emp set sal = sal*1.1 where empno=pempno;
              --漲工資的人數
              countEmp := countEmp+1;
              --漲後的工資總額
              salTotal := salTotal+psal*0.1;
              else exit;
              end if;  
          end loop;
     --關閉光標
     close cemp;
     dbms_output.put_line('漲工資人數:'||countEmp||  '資總額:'||salTotal);
   end;