Question

我想按照以下逻辑计算列出卖家，“列出过去15天内购买量为0且过去2个月购买量超过10件的卖家”

这是我的查询，我知道这个查询有问题，所以我需要帮助解决。

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Answer 1

使用子查询，您可以执行以下操作：

select * from tsellers s
where 
    (select count(1) from torders o 
         where 
             o.seller_id=s.id and 
             order_date>DATE_SUB(curdate(), INTERVAL 15 DAY) ) < 1 and
    (select count(1) from torders o 
         where 
             o.seller_id=s.id and 
             order_date>DATE_SUB(curdate(), INTERVAL 2 MONTH)) > 10;

子查询

(select count(1) from torders o 
     where 
         o.seller_id=s.id and 
         order_date>DATE_SUB(curdate(), INTERVAL 15 DAY) )

表示：在给定的时间内与该卖家有多少订单

您可以在rextester

上进行测试

Answer 2

可以使用下面提到的查询

SELECT c.* FROM sellers c
    LEFT JOIN (
        SELECT * FROM orders
        WHERE order_date BETWEEN DATE(CURDATE() - INTERVAL 2 MONTH) AND NOW()
    ) d ON c.seller_id = d.seller_id
    GROUP BY c.seller_id
    HAVING count(d.order_id) >= 10
    and c.seller_id in ((SELECT c.seller_id FROM sellers c 
    LEFT JOIN (
        SELECT * FROM orders WHERE order_date BETWEEN DATE(CURDATE() - INTERVAL 15 DAY) AND NOW()
    ) as d
    ON c.seller_id = d.seller_id
WHERE d.seller_id IS NULL))

因为您当前的查询是在过去15天内结合过去2个月获取数据

Mysql查询逻辑列出来自数据库的卖家

2 个答案: