mysql存储过程游标结果集时，数据没有遍历完整

Question

mysql存储过程游标结果集时，里面调用其他存储过程，如果调用的存储过程查询为空，游标循环就结束了，怎么解决

Answer 1

CREATE DEFINER=`root`@`%` PROCEDURE `insertPresale`()

BEGIN

    #Routine body goes here...

    DECLARE done INT DEFAULT 0;  /*用于判断是否结束循环*/

    DECLARE goodsId VARCHAR(255);#标记商品id

    DECLARE flag INT DEFAULT 0;#标记数据库是否包含此条商品记录

    /*用于存储结果集的记录*/

    /*定义游标*/

    DECLARE idCur CURSOR FOR SELECT goods_id FROM `sys_goods_publish` WHERE presale= 1 AND presale_time <= NOW();

    /*定义 设置循环结束标识done值怎么改变 的逻辑*/

    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1; /*done = true;亦可*/

    OPEN idCur;  /*打开游标*/

    /* 循环开始 */

    REPEAT

    #/* 如果要fetch多列应该这样写，fetch cur/*对应下面的idCur*/

    FETCH idCur INTO goodsId;  /*还可以fetch多列（假设结果集的记录不是单列的话）*/

    IF NOT done THEN  /*数值为非0，MySQL认为是true*/

        SELECT COUNT(*) INTO flag FROM `itemsinfonew` WHERE TaoBaoitemId = goodsId;

        IF (flag>0) THEN #如果数据库中有爬取此条记录则删除已用户发布的为准

            DELETE FROM `itemsinfonew` WHERE TaoBaoitemId = goodsId;

        END IF;

        INSERT INTO `itemsinfonew` (TaoBaoitemId,CouponID,CreateSourceName)

            SELECT goods_id,coupon_id,SUBSTRING("customer_fd",0.5)

                FROM `sys_goods_publish` 

                    WHERE  presale_time <= NOW() AND goods_id = goodsId;

        UPDATE `sys_goods_publish` SET presale = 0 WHERE presale= 1 AND presale_time <= NOW() AND goods_id = goodsId;

    END IF;

    UNTIL done END REPEAT;

    CLOSE idCur;  /*关闭游标*/