哪位顾客在我们的商店购买了4件或更多商品？

Question

哪位顾客在我们的商店购买了4件或更多商品？

SELECT cutomer.cusName, COUNT(itemName) AS 'Number of items'
FROM customer INNER JOIN store
ON customer.cusID = store.cusID
GROUP BY cutomer.cusName;

我不确定如何输出哪个顾客购买了4件或更多物品。

Answer 1

添加HAVING条款以吸引购买4件或更多商品的客户

SELECT cutomer.cusName, COUNT(itemName) AS 'Number of items'
FROM customer INNER JOIN store
ON customer.cusID = store.cusID
GROUP BY cutomer.cusName
HAVING count(itemName) >=4