选择在不同日期订购的相同客户的订单

Question

我在MYSQL工作台中尝试了这个命令来选择在不同日期订购的相同客户（相同的customerID）的订单：但是它没有正常工作：错误是什么？

SELECT * FROM Table1 WHERE customerID = customerID AND shipmentDate != shipmentDate;

感谢您的支持！

Answer 1

SELECT * FROM Table T1,TABLE T2 WHERE T1.customerID = T2.customerID AND T1.shipmentDate <> T2.shipmentDate;