1 creat_time是一位
1569079171
十位数的时间戳
查询30天以前的所有订单
where (unix_timestamp(now())-`creat_time`)>30*86400
2 up_time时间类型
2019-12-14 09:08:22
查询7天内的订单
where date_sub(curdate(), INTERVAL 7 DAY) <= date(`up_time`)
3 use_time是字符串时间类型
use_time=‘2019/11/28 01:41:21’
SELECT * FROM `la_goods_faka_content` WHERE unix_timestamp(now())-unix_timestamp(str_to_date(`use_time`,'%Y/%m/%d %H:%i:%s'))>30*86400 and `status`=1
