如休为视图的计算列加上NOT NULL约束？
比如下面的视图创建语句：

ALTER VIEW [dbo].[vwClient_CompanyPerson]
WITH SCHEMABINDING
AS
SELECT
A.CompanyID*1000+B.PersonID AS CompanyPersonID, A.CompanyID, B.PersonID
FROM
dbo.tblCompany AS A INNER JOIN
dbo.tblPerson AS B ON B.CompanyID=A.CompanyID

如何为CompanyPersonID加上NOT NULL约束？谢谢！！！
[解决办法]
view是视图，没有表结构，使用对列使用约束，只能对select添加where条件。

你在from后添加 where CompanyPersonID is not null就可以。


[解决办法]

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ALTER VIEW [dbo].[vwClient_CompanyPerson]
WITH SCHEMABINDING
AS
SELECT
    A.CompanyID*1000+B.PersonID AS CompanyPersonID, A.CompanyID, B.PersonID
FROM
    dbo.tblCompany AS A INNER JOIN
    dbo.tblPerson AS B ON B.CompanyID=A.CompanyID
 

select * from vwClient_CompanyPerson where CompanyPersonID is not null


[解决办法]

引用:

不好意思，标题写错了，如何写成如休了。

你要给CompanyPersonID 这个加上not null的约束，好像不行，我觉得还不如把语句改成这样：


ALTER VIEW [dbo].[vwClient_CompanyPerson]
WITH SCHEMABINDING
AS
SELECT
isnull(A.CompanyID*1000,0)+isnull(B.PersonID,0) AS CompanyPersonID, A.CompanyID, B.PersonID
FROM
dbo.tblCompany AS A INNER JOIN
dbo.tblPerson AS B ON B.CompanyID=A.CompanyID