我制作了一个需要调用8次的代码，每次使用不同的＆＃39; x＆＃39;值，范围从1到8.
UPDATE schedule
SET worker= (SELECT worker FROM (SELECT * FROM schedule) AS scheduleIn WHERE day = x + 1 AND scheduleIn.hour = schedule.hour)
WHERE day = x;
现在，就我看来，我可以用两种方法解决这个问题：
1）创建一个循环并使用每个X值调用代码，如下所示:(伪代码）
for(int x = 0; x < 8; x++)
{
UPDATE schedule
SET worker= (SELECT worker FROM (SELECT * FROM schedule) AS scheduleIn WHERE day = x + 1 AND scheduleIn.hour = schedule.hour)
WHERE day = x;
}
2）使用不同的值多次调用相同的代码。像这样：
UPDATE schedule
SET worker= (SELECT worker FROM (SELECT * FROM schedule) AS scheduleIn WHERE day = 1 + 1 AND scheduleIn.hour = schedule.hour)
WHERE day = 1;
UPDATE schedule
SET worker= (SELECT worker FROM (SELECT * FROM schedule) AS scheduleIn WHERE day = 2 + 1 AND scheduleIn.hour = schedule.hour)
WHERE day = 2;
UPDATE schedule
SET worker= (SELECT worker FROM (SELECT * FROM schedule) AS scheduleIn WHERE day = 3 + 1 AND scheduleIn.hour = schedule.hour)
WHERE day = 3;
...
你明白了。但两种选择都有其自身的问题。第一个问题是我仍然不知道如何在MySQL中制作类似循环的循环，尽管我从之前的帖子中获得了所有帮助。
第二个是：出于某种原因，似乎我不能在单个事件上放置多个语句。如果有人能告诉我自己做错了什么，我真的很感激。