如何在table1中找到客户详细信息，这些客户详细信息在sql sever的表2中有很多联系号码

Question

我在SQL Server中有两个表

table1具有CustomerID，CustomerName，table2具有CustomerID，Contact。现在我必须找到在表2中有两个联系号码的客户名称和ID。

我已经编写了查询，但它只显示了客户的ID而不是名称：

SELECT distinct tbl_Cust1.CustID, tbl_Cust1.CustName
    FROM tbl_Cust1 INNER JOIN
         tbl_Cust2 ON tbl_Cust1.CustID =tbl_Cust2.CustID
         and tbl_Cust2.CustID in (SELECT tbl_Cust2.CustID
                                   FROM  tbl_Cust2
                                   GROUP BY CustID
                                   HAVING (COUNT(*) = 2))

Answer 1

试试这个：

SELECT DISTINCT t1.CustID, t1.CustName
    FROM tbl_Cust1 t1 
    JOIN tbl_Cust2 t2 ON t1.CustID = t2.CustID
    GROUP BY CustID, t1.CustName 
    HAVING (COUNT(t2.Contact) = 2))