JOIN t2 ON t1.id=t2.id AND t1.date=t2.date
JOIN t2 ON (t2.id = t1.id AND t2.date = t1.date)
SELECT *
FROM t1
JOIN t2 USING (id, date)
也许您需要使用 INNER JOIN 或者 t2.id 不为 null 如果您希望结果只匹配两个条件