我正在开发一个ASP.NET应用程序，其中包含两个选择字段的页面。 一个用于搜索所有人到选定的部门，另一个用于搜索具有给定名称的人（或者用LIKE搜索其中一部分）。 对于每个选择字段，我得到一个查询，该查询获得相同框架实体的IQueryable对象。 但是当我尝试将IQueryable对象及其结果与Intersect（由于AND-Logic）结合起来时，只处理第一个查询而第二个查询不处理。 我做错了什么？ 也许我的查询中有错误？
以下是查询：
第一个搜索人员到选定的部门。
{SELECT
[Extent1].[PersonID] AS [PersonID],
CASE WHEN (([Extent1].[InstanceID] IS NOT NULL) AND ([Extent1].[InstanceID] IS NOT NULL)) THEN [Extent1].[InstanceID] ELSE 0 END AS [C1],
CASE WHEN (([Extent1].[bHidden] IS NOT NULL) AND ([Extent1].[bHidden] IS NOT NULL)) THEN [Extent1].[bHidden] ELSE cast(0 as bit) END AS [C2],
[Extent1].[txtLastName] AS [txtLastName],
[Extent1].[txtFirstName] AS [txtFirstName],
[Extent1].[txtEMail] AS [txtEMail],
[Extent1].[txtAlternativeEMail] AS [txtAlternativeEMail],
[Extent1].[txtGID] AS [txtGID],
[Extent1].[txtPhoneNumber] AS [txtPhoneNumber],
CASE WHEN (([Extent1].[iImportance] IS NOT NULL) AND ([Extent1].[iImportance] IS NOT NULL)) THEN [Extent1].[iImportance] ELSE 0 END AS [C3],
[Extent1].[Teamlead] AS [Teamlead]
FROM (SELECT
[Person_Teamlead].[PersonID] AS [PersonID],
[Person_Teamlead].[InstanceID] AS [InstanceID],
[Person_Teamlead].[WiW_URL_PersonID] AS [WiW_URL_PersonID],
[Person_Teamlead].[txtAccount] AS [txtAccount],
[Person_Teamlead].[txtTitle] AS [txtTitle],
[Person_Teamlead].[txtLastName] AS [txtLastName],
[Person_Teamlead].[txtFirstName] AS [txtFirstName],
[Person_Teamlead].[txtPhoneNumber] AS [txtPhoneNumber],
[Person_Teamlead].[txtEMail] AS [txtEMail],
[Person_Teamlead].[txtGID] AS [txtGID],
[Person_Teamlead].[txtDomain] AS [txtDomain],
[Person_Teamlead].[txtFax] AS [txtFax],
[Person_Teamlead].[txtMobilePhone] AS [txtMobilePhone],
[Person_Teamlead].[txtRoom] AS [txtRoom],
[Person_Teamlead].[txtAddress] AS [txtAddress],
[Person_Teamlead].[dtLastUpdate] AS [dtLastUpdate],
[Person_Teamlead].[bHidden] AS [bHidden],
[Person_Teamlead].[iExtern] AS [iExtern],
[Person_Teamlead].[txtOrganisationUnit] AS [txtOrganisationUnit],
[Person_Teamlead].[txtStreet] AS [txtStreet],
[Person_Teamlead].[txtZip] AS [txtZip],
[Person_Teamlead].[txtLocalityName] AS [txtLocalityName],
[Person_Teamlead].[txtCountry] AS [txtCountry],
[Person_Teamlead].[iToDelete] AS [iToDelete],
[Person_Teamlead].[dtToDelete] AS [dtToDelete],
[Person_Teamlead].[iImportance] AS [iImportance],
[Person_Teamlead].[iManualInput] AS [iManualInput],
[Person_Teamlead].[txtAlternativeEMail] AS [txtAlternativeEMail],
[Person_Teamlead].[Teamlead] AS [Teamlead]
FROM [dbo].[Person_Teamlead] AS [Person_Teamlead]) AS [Extent1]
WHERE ( EXISTS (SELECT
1 AS [C1]
FROM [dbo].[Person_Department] AS [Extent2]
WHERE ([Extent2].[DepartmentID] = @p__linq__0) AND ([Extent2].[PersonID] = [Extent1].[PersonID])
)) AND ([Extent1].[InstanceID] = @p__linq__1) AND (0 = [Extent1].[iToDelete]) AND ((0 = (CASE WHEN ([Extent1].[bHidden] IS NOT NULL) THEN cast(1 as bit) ELSE cast(0 as bit) END)) OR (0 = [Extent1].[bHidden]))}
第二个查询用于搜索给定姓名的人。
{SELECT
[Project1].[PersonID] AS [PersonID],
[Project1].[C1] AS [C1],
[Project1].[C2] AS [C2],
[Project1].[txtLastName] AS [txtLastName],
[Project1].[txtFirstName] AS [txtFirstName],
[Project1].[txtEMail] AS [txtEMail],
[Project1].[txtAlternativeEMail] AS [txtAlternativeEMail],
[Project1].[txtGID] AS [txtGID],
[Project1].[txtPhoneNumber] AS [txtPhoneNumber],
[Project1].[C3] AS [C3],
[Project1].[Teamlead] AS [Teamlead]
FROM ( SELECT
[Extent1].[PersonID] AS [PersonID],
[Extent1].[txtLastName] AS [txtLastName],
[Extent1].[txtFirstName] AS [txtFirstName],
[Extent1].[txtPhoneNumber] AS [txtPhoneNumber],
[Extent1].[txtEMail] AS [txtEMail],
[Extent1].[txtGID] AS [txtGID],
[Extent1].[txtAlternativeEMail] AS [txtAlternativeEMail],
[Extent1].[Teamlead] AS [Teamlead],
CASE WHEN (([Extent1].[InstanceID] IS NOT NULL) AND ([Extent1].[InstanceID] IS NOT NULL)) THEN [Extent1].[InstanceID] ELSE 0 END AS [C1],
CASE WHEN (([Extent1].[bHidden] IS NOT NULL) AND ([Extent1].[bHidden] IS NOT NULL)) THEN [Extent1].[bHidden] ELSE cast(0 as bit) END AS [C2],
CASE WHEN (([Extent1].[iImportance] IS NOT NULL) AND ([Extent1].[iImportance] IS NOT NULL)) THEN [Extent1].[iImportance] ELSE 0 END AS [C3]
FROM (SELECT
[Person_Teamlead].[PersonID] AS [PersonID],
[Person_Teamlead].[InstanceID] AS [InstanceID],
[Person_Teamlead].[WiW_URL_PersonID] AS [WiW_URL_PersonID],
[Person_Teamlead].[txtAccount] AS [txtAccount],
[Person_Teamlead].[txtTitle] AS [txtTitle],
[Person_Teamlead].[txtLastName] AS [txtLastName],
[Person_Teamlead].[txtFirstName] AS [txtFirstName],
[Person_Teamlead].[txtPhoneNumber] AS [txtPhoneNumber],
[Person_Teamlead].[txtEMail] AS [txtEMail],
[Person_Teamlead].[txtGID] AS [txtGID],
[Person_Teamlead].[txtDomain] AS [txtDomain],
[Person_Teamlead].[txtFax] AS [txtFax],
[Person_Teamlead].[txtMobilePhone] AS [txtMobilePhone],
[Person_Teamlead].[txtRoom] AS [txtRoom],
[Person_Teamlead].[txtAddress] AS [txtAddress],
[Person_Teamlead].[dtLastUpdate] AS [dtLastUpdate],
[Person_Teamlead].[bHidden] AS [bHidden],
[Person_Teamlead].[iExtern] AS [iExtern],
[Person_Teamlead].[txtOrganisationUnit] AS [txtOrganisationUnit],
[Person_Teamlead].[txtStreet] AS [txtStreet],
[Person_Teamlead].[txtZip] AS [txtZip],
[Person_Teamlead].[txtLocalityName] AS [txtLocalityName],
[Person_Teamlead].[txtCountry] AS [txtCountry],
[Person_Teamlead].[iToDelete] AS [iToDelete],
[Person_Teamlead].[dtToDelete] AS [dtToDelete],
[Person_Teamlead].[iImportance] AS [iImportance],
[Person_Teamlead].[iManualInput] AS [iManualInput],
[Person_Teamlead].[txtAlternativeEMail] AS [txtAlternativeEMail],
[Person_Teamlead].[Teamlead] AS [Teamlead]
FROM [dbo].[Person_Teamlead] AS [Person_Teamlead]) AS [Extent1]
WHERE ([Extent1].[InstanceID] = @p__linq__0) AND (0 = [Extent1].[iToDelete]) AND ((0 = (CASE WHEN ([Extent1].[bHidden] IS NOT NULL) THEN cast(1 as bit) ELSE cast(0 as bit) END)) OR (0 = [Extent1].[bHidden])) AND ([Extent1].[txtLastName] LIKE @p__linq__1 ESCAPE N'~')
) AS [Project1]
ORDER BY [Project1].[Teamlead] DESC, [Project1].[C3] DESC, [Project1].[txtLastName] ASC, [Project1].[txtFirstName] ASC}
答案 0 :(得分：0)
我找到了它。 小事，大结果！ 我忘了将Intersect的结果设置为原始查询。 我做了
query1.Intersect(query2);
而不是
query1 = query1.Intersect(query2);
这就是为什么只是始终执行query1。