Question

我有3张桌子：Entry，User，Comment。我通过sql视图显示每个条目的注释计数和用户（发件人）全名。但是当我使用where子句时，它会出错。

我的SQL视图如下：

CREATE VIEW [dbo].Entry_View
    AS SELECT 
            E.Id AS [Id], 
            Convert(varchar(10), E.Date, 104) AS [Date], 
            E.Subject AS [Subject], 
            E.Content AS [Content], 
            E.Faculty AS [Faculty], 
            E.Category AS [Category],
            (U.Firstname + ' ' + U.Lastname) AS [User],
            E.Department AS [Department],
            E.ViewCount AS [View],
            E.SupportCount AS [Support],
            Count(C.Entry_Id) AS [Comment] 
        FROM (Entry E INNER JOIN User U ON U.Id = E.User_Id)
        LEFT JOIN Comment C on C.Entry_Id=E.Id 
        GROUP BY
            E.Id, E.Date, E.Subject, E.Content, 
            E.Faculty, E.Category, (U.Firstname + ' ' + U.Lastname), 
            E.Department, E.ViewCont, E.SupportCount

当我致电时： SELECT * FROM Entry_View WHERE E.Department = 'Administration'

我收到了错误消息： The multi-part identifier "E.Department" could not be bound.

我无法解决这个问题，需要帮助。感谢。

Answer 1

查询视图时，视图定义中使用的别名不可用。所以这个：

SELECT * FROM Entry_View WHERE E.Department = 'Administration'

必须成为这个：

SELECT * FROM Entry_View E WHERE E.Department = 'Administration'

或者这个：

SELECT * FROM Entry_View WHERE Department = 'Administration'

Answer 2

您选择E.Department AS Department ....所以

SELECT * FROM Entry_View WHERE Department = 'Administration'

Answer 3

您可以尝试：SELECT * FROM Entry_View WHERE Department = 'Administration'

将SQL VIEW与WHERE子句一起使用（ERROR）

3 个答案: