sql - 无法再次绑定(bind)多部分标识符

Question

我正在尝试创建这样的存储过程，

CREATE PROCEDURE [dbo].[SP_Name]
(
    @ID varchar(50),
    @URL varchar(256)
)
AS
    SELECT DISTINCT 
       Table1.CID, Table2.Name, Table2.aID, Table2.bID,
       Table3.SchemeName, Table2.cURL
    FROM Table4
    INNER JOIN Table5 ON Table5.eID = Table1.eID
    INNER JOIN Table2 ON Table2.ID = Table1.CID
    INNER JOIN [Table3] ON Table3.aID = Table2.aID AND Table3.bID = Table2.bID
    WHERE 
        Table5.ID = @ID 
        AND Table2.cURL LIKE '%' + @URL + '%'

但是我收到了这个错误:

Msg 4104, Level 16, State 1, Procedure SP_Name, Line 7
The multi-part identifier "Table1.eID" could not be bound.
Msg 4104, Level 16, State 1, Procedure SP_Name, Line 7
The multi-part identifier "Table1.cID" could not be bound.
Msg 4104, Level 16, State 1, Procedure SP_Name, Line 7
The multi-part identifier "Table1.cID" could not be bound.

即使语法正确。

Answer 1

您必须使用 Table1 添加内部联接

SELECT DISTINCT Table1.CID, 
Table2.Name, Table2.aID, Table2.bID,
Table3.SchemeName, Table2.cURL

FROM Table4
INNER JOIN Table1 ON ....
INNER JOIN Table5 ON Table5.eID = Table1.eID
INNER JOIN Table2 ON Table2.ID = Table1.CID
INNER JOIN [Table3] ON Table3.aID = Table2.aID AND Table3.bID = Table2.bID

WHERE Table5.ID=@ID AND Table2.cURL LIKE '%' + @URL + '%'

或使用 Table1 而不是 Table4

SELECT DISTINCT Table1.CID, 
Table2.Name, Table2.aID, Table2.bID,
Table3.SchemeName, Table2.cURL

FROM Table1
INNER JOIN Table1 ON ....
INNER JOIN Table5 ON Table5.eID = Table1.eID
INNER JOIN Table2 ON Table2.ID = Table1.CID
INNER JOIN [Table3] ON Table3.aID = Table2.aID AND Table3.bID = Table2.bID
WHERE Table5.ID=@ID AND Table2.cURL LIKE '%' + @URL + '%'