SELECT
CONCAT(LastName,', ',FirstName)AS 'Name',</li>
City,
Country,
ShipCity AS 'Shipped City'
From
itstudies.employees
INNER JOIN
Orders
ON Employees.EmployeeID = Orders.EmployeeID
WHERE City = ShipCity;
此查询将输出显示为:-
(仅显示部分输出。)
Name City Country Shipped City
Smith, Jo York UK York
Avery, Paul Dallas USA Dallas
Avery, Paul Dallas USA Dallas
Kris, Jan York UK York
Kris, Jan York UK York
Hill, Ros Boston USA Boston
我需要取出重复项并更改查询以显示:-
Name City Country Shipped City
Smith, Jo York UK York
Avery, Paul Dallas USA Dallas
Kris, Jan York UK York
Hill, Ros Boston USA Boston
提前致谢。