MySQL how to join tables on two fields
Solution 1:
JOIN t2 ON t1.id=t2.id AND t1.date=t2.date
Solution 2:
JOIN t2 ON (t2.id = t1.id AND t2.date = t1.date)
Solution 3:
SELECT *
FROM t1
JOIN t2 USING (id, date)
perhaps you'll need to use INNEER JOIN or where t2.id is not null if you want results only matching both conditions