统计重复数据出现次数
SELECT * FROM
(
SELECT * FROM
(
SELECT count(t1.compare_id) AS c1,t1.*
FROM t1
LEFT JOIN t3 ON t1.compare_id=t3.compare_id
WHERE t1.compare_id=t3.compare_id
GROUP BY t1.compare_id
) t
) a1
LEFT JOIN
(
SELECT * FROM
(
SELECT count(t2.compare_id) AS c2,t2.*
FROM t2
LEFT JOIN t3 ON t2.compare_id=t3.compare_id
WHERE t2.compare_id=t3.compare_id
GROUP BY t2.compare_id
) t WHERE t.c2>1
) a2 ON a1.compare_id = a2.compare_id
WHERE a1.compare_id = a2.compare_id