我正在尝试编写一个脚本,以显示每个城市至少有两个客户的名称,以及该城市的客户数量。
这是我所拥有的,但我无法弄清楚如何获得客户数量。 我接近了吗?
SELECT CONCAT (FName,' ',LName) AS Customers, city
FROM Customer
GROUP BY City
HAVING COUNT(CID) >= 2
答案 0 :(得分:0)
使用count(*)
SELECT city , count(*)
FROM Customer
GROUP BY City HAVING COUNT(*) >= 2
答案 1 :(得分:0)
正如你从这个例子中看到的那样:
SELECT Employees.LastName, COUNT(Orders.OrderID) AS NumberOfOrders FROM (Orders
INNER JOIN Employees
ON Orders.EmployeeID=Employees.EmployeeID)
GROUP BY LastName
HAVING COUNT(Orders.OrderID) > 10;
您必须在选择
中输入COUNT(CID)