存储过程循环示例

CREATE PROCEDURE update_pointer()
BEGIN
 /* 定义变量一 */
    DECLARE  total float;
    DECLARE  uid int;
    DECLARE  _done int default 0;
    DECLARE currentP int default 0;
 DECLARE firstid int;
 DECLARE secondid int;
    DECLARE parentId VARCHAR(16);
 DECLARE first_jj_yy int default 0;#第一程基建燃油费
 DECLARE second_jj_ry int default 0;#第二程基建燃油费
 /* 定义光标 */
    DECLARE _Cur CURSOR FOR
            SELECT aliTotal,ordUID,flightId,backFliId FROM fightorder WHERE ordState=4;#主订单查询
    DECLARE _CurRex CURSOR FOR
     SELECT oeactTotal,ordId FROM flight_orderex WHERE oeState=4;
 
 
    DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET _done = 1;#错误定义，标记循环结束
 
 /* 打开光标 */
    OPEN _Cur;
   /* 循环执行 */
         REPEAT
            FETCH _Cur INTO total, uid, firstid, secondid;
            IF NOT _done THEN
    IF total>0 AND uid>0 THEN
     SELECT fcn+fyq into first_jj_yy FROM flightlist WHERE flightId=firstid limit 1;
     IF secondid>0 THEN
      SELECT fcn+fyq into second_jj_ry FROM flightlist WHERE flightId=firstid limit 1;
     END IF;
     UPDATE sysusers SET integral=(integral+total)-(second_jj_ry+first_jj_yy) WHERE sysusers.UID=uid;
    END IF;
            END IF;
         UNTIL _done END REPEAT; #当_done=1时退出被循
 /*关闭光标*/
    CLOSE _Cur;
    SET _done = 0;#只有定义为0，新的循环才能继续。
    OPEN _CurRex;
 REPEAT
  FETCH _CurRex INTO total,parentId;
  IF NOT _done THEN
   #IF total > 0 THEN
    SELECT ordUID into uid FROM fightorder WHERE fightorder.alipayNo=parentId limit 1;#查询用户UID
    #INSERT INTO test values(total,uid);
    UPDATE sysusers SET integral=integral+total WHERE sysusers.UID=uid;#新增积分
   #END IF;
  END IF;
    UNTIL _done END REPEAT;
    CLOSE _CurRex;
END