MySQL分组后组内排序

MySQL分组后组内排序

SELECT a.*,COUNT(1) AS vin FROM t_iov_cartrunk_auth a 
	LEFT JOIN t_iov_cartrunk_auth b ON a.user_id = b.user_id 
	AND a.create_timd <= b.create_timd GROUP BY a.user_id,a.create_timd ORDER BY a.user_id,a.create_timd DESC

SELECT
	a.*, count(1) AS rank
FROM
	test a
LEFT JOIN test b ON a.category_id = b.category_id
AND a.date <= b.date
GROUP BY
	a.category_id,
	a.date
ORDER BY
	a.category_id,
	a.date DESC