Question

我试图从租户表中获取最大租金将其加入到人员表中，该表将按姓氏名称对最大租金进行排序（数据是为了任务的目的而随机生成的。）下面的错误与此有关？

每个派生表都必须有自己的别名

我使用以下代码：

SELECT PersonID, surname, tenantID, rent
FROM Tenants
    INNER JOIN People
        ON tenantID = People.ID
    INNER JOIN
    (
        SELECT  tenantID, MAX(rent) Max_Rent
        FROM    Tenants
        GROUP   BY tenantID
    ) ON Tenants.tenantID = People.tenantID AND
            Tenants.rent = Max_rent)

Answer 1

您应该为每个子查询下的每个表添加一个别名，如下所示：

SELECT PersonID, surname, tenantID, rent
FROM Tenants T1
INNER JOIN People P1
    ON T1.tenantID = P1.ID
    INNER JOIN
    (
        SELECT  T2.tenantID, MAX(T2.rent) Max_Rent
        FROM    Tenants T2
        GROUP   BY T2.tenantID
    ) ON T1.tenantID = P1.tenantID AND
        T1.rent = Max_rent)

＃1248 - 每个派生表必须有自己的别名错误

1 个答案: