MySQL JOIN 没有返回值

Question

我有 mysql 查询，它似乎可以工作，但不会从 payments 表返回值。我做错了什么？

SELECT members.id, members.name, members.lastname 
FROM members 
JOIN (SELECT payments.id, payments.user_id,  payments.begin_date,
MAX(payments.finish_date) AS finish_date, payments.price 
FROM payments 
GROUP BY payments.user_id) 
AS payments 
WHERE members.id=payments.user_id AND payments.finish_date>=CURDATE() 
ORDER BY payments.finish_date ASC, payments.id ASC`

我使用:

echo stripslashes($wiersz['begin_date']);

返回行数据。

Answer 1

您可能需要注意您没有在主查询中选择 begin_date 字段:

SELECT members.id, members.name, members.lastname FROM ...

尝试使用

SELECT members.id, members.name, members.lastname, begin_date FROM ...

安德烈