MYSQL- 游标

CREATE PROCEDURE h_useCursor()
BEGIN

  declare e_name char(50);
  -- 遍历数据结束标志
  declare done int default false;
  declare cure CURSOR FOR SELECT id from shangdian;
  --将结束标志绑定到游标
  declare continue handler for not found set done=true;
  open cure;
  read_loop:LOOP
    FETCH cure into e_name;
    IF done=true THEN
      LEAVE read_loop;
    END IF;
        --测试输出
        select e_name;end loop;
  close cure;
END