mysql 存储过程

DELIMITER $$
DROP PROCEDURE IF EXISTS `p_user_redbag_grap` $$
CREATE PROCEDURE `p_user_redbag_grap`(
    IN postRedbagId VARCHAR(128), -- 帖子与红包关联id
IN userId VARCHAR(128),  -- 用户id
IN userRedbagInfoId VARCHAR(128), -- 用户红包详情id
    IN redbagSummaryId VARCHAR(128), -- 用户红包统计id
    IN svrTime TIMESTAMP, -- 服务器时间
    IN amount BIGINT, -- 红包金额
    IN type INT, -- 红包类型
    IN postType VARCHAR(1), -- 帖子类型: 1-链接 2-日志 3- 推荐好友 4-登录


    OUT resCode INT -- 结果编码 1-成功，2-帖子不存在或已被删除, 3-红包已被抢完 9-数据库异常
  )  
BEGIN
      DECLARE redbagId VARCHAR(64);
      DECLARE sourceId VARCHAR(64);
      DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET resCode=9;

      START TRANSACTION; 
      SET @count = 0;
      SET @restNum = 0;
      SET resCode = 1;
      SET @makeAmount = 0;
      SET @sysAmount = 0;
      
       
      -- 查询帖子红包关联表信息
   SELECT count(*) INTO @count from t_idbear_post_redbag where id = postRedbagId AND `status` = '1' and isavailable = '1';
      IF @count > 0 THEN
SELECT rest_num, redbag_id, post_id INTO @restNum, redbagId, sourceId from t_idbear_post_redbag where id = postRedbagId AND `status` = '1' and isavailable = '1';
         IF @restNum < 1 THEN 
            -- SELECT '剩余红包小于1';
            SET resCode = 3;
         ELSE
            -- SELECT '插入用户红包详情';
            INSERT INTO 
              t_idbear_user_redbag_info (id, user_id, post_redbag_id,redbag_id, source_Id, post_type, amount, type, status, isavailable, create_by, create_time, update_by, update_time)
            VALUES (userRedbagInfoId, userId, postRedbagId, redbagId, sourceId, postType, amount, type, '1', '1', userId, svrTime, userId, svrTime);
            -- SELECT CONCAT('resCode=', resCode);
            -- SELECT '修改红包与帖子关联表红包剩余数量';
            UPDATE t_idbear_post_redbag SET rest_num = rest_num - 1, update_time =svrTime, update_by = user_id, update_time = svrTime where id = postRedbagId;                
            
         END IF;         
      ELSE 
        SET resCode = 2;
      END IF; 
      IF resCode = 9 THEN  
ROLLBACK;  
ELSE  
COMMIT;  
END IF;     
SELECT resCode;   
END $$
DELIMITER ;