mysql-查询一个表用户对新增用户进行统计不能用not in 需要用exists

程序员文章站 2022-05-23 22:26:12

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mysql

下面是用not in 实现的，需要修改为 exists实现
SELECT COUNT(*) from order_info_ref as oif where oif.order_time>='2016-03-02 00:01:00' and oif.order_time(SELECT oi.ca_user_id from order_info_ref as oi where oi.order_time>='2016-03-01 00:01:00' and oi.order_time