mysql 统计七天内的订单和每天的订单

七天内的订单:

SELECT * FROM t_order  WHERE DATE_SUB(CURDATE(), INTERVAL 7 DAY) <= DATE(create_time);

 

七天内每天的订单数量,先用where条件查出七天内的订单,再用group by 对每天进行分组就行了:

SELECT DATE(create_time) createtime,COUNT(*) FROM t_order WHERE DATE_SUB(CURDATE(), INTERVAL 7 DAY) <= DATE(create_time) GROUP BY createtime;