Question

我有以下表格：

Customers (customer_id,customer_name)
Orders (order_id, order_date, customer_id)
Order_details (order_id, item_id)
Items (item_id)

我需要一个oracle sql查询来获取购买多件商品的客户列表。提前谢谢

Answer 1

这应该这样做，它还包括一个显示订单数量的列：

SELECT Count(item_id) order_count, customer_id, customer_name
FROM Customers
   INNER JOIN Orders ON Customers.customer_id = Orders.customer_id
   INNER JOIN Order_details ON Orders.order_id = Order_details.order_id
GROUP BY customer_id, customer_name
HAVING Count(item_id) > 1

Answer 2

试着看看这是否有效：

select c.* from customers c, orders o, order_details od 
where c.customer_id = o.customer_id 
    and o.order_id = od.order_id 
    group by od.order_id having count(od.item_id) > 1;

Oracle sql查询获取购买多个项目的客户列表

2 个答案: