PL-SQL经典试题

15. 利用游标 for 循环完成 14. 

 

declare

    --定义游标

    cursor emp_sal_cursor is select salary, employee_id id from employees;

    

    --定义基数变量

    temp number(4, 2);

begin

    --处理游标的循环操作

    for c in emp_sal_cursor loop

          --判断员工的工资, 执行 update 操作

          --dbms_output.put_line(c.employee_id || ': ' || c.salary);

            

          if c.salary <= 5000 then

             temp := 0.05;

          elsif c.salary <= 10000 then

             temp := 0.03;   

          elsif c.salary <= 15000 then

             temp := 0.02;

          else

             temp := 0.01;

          end if;

          

          --dbms_output.put_line(v_id || ': ' || v_sal || ', ' || temp);

          update employees set salary = salary * (1 + temp) where employee_id = c.id;

    end loop;

end;

 

16*. 带参数的游标

 

declare

    --定义游标

    cursor emp_sal_cursor(dept_id number, sal number) is

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