获得 ef(dbfirst) 和 Sql 查询之间的差异结果

Question

开始前我有观点 'PageViewModSession' 它的代码是

 SELECT        CONVERT(datetime, CONVERT(varchar(14), VisitStartDateTime) +    ':00:00') AS DateValue, MAX(dbo.PageLogGroupByDateTimeFull(VisitStartDateTime))  AS PageLogCount, 
                     (CASE MAX(dbo.SessionGroupByDateTimeFull(VisitStartDateTime)) WHEN 0 THEN 1 ELSE MAX(dbo.SessionGroupByDateTimeFull(VisitStartDateTime)) END) AS SessionLogCount, SiteInfoID
FROM            dbo.PageLog
GROUP BY CONVERT(varchar(14), VisitStartDateTime), SiteInfoID

和当 select 这个观点我的结果是

并且当 select 在 ef 中使用此语法时

 var obj = db.PageViewModSessions.AsQueryable();

结果是

在结果的每一行中重复第一行

我在探查器中创建了 Sql 查询查询

SELECT 
[Extent1].[DateValue] AS [DateValue], 
[Extent1].[PageLogCount] AS [PageLogCount], 
[Extent1].[SessionLogCount] AS [SessionLogCount], 
[Extent1].[SiteInfoID] AS [SiteInfoID]
FROM (SELECT 
[PageViewModSession].[DateValue] AS [DateValue], 
[PageViewModSession].[PageLogCount] AS [PageLogCount], 
[PageViewModSession].[SessionLogCount] AS [SessionLogCount], 
[PageViewModSession].[SiteInfoID] AS [SiteInfoID]
FROM [dbo].[PageViewModSession] AS [PageViewModSession]) AS [Extent1]

结果是

2015-11-03 01:00:00.000        19        9        2
2015-11-03 02:00:00.000        19        4        2
2015-11-03 03:00:00.000        4        1        2
2015-11-03 11:00:00.000        7        5        2
2015-11-03 12:00:00.000        9        2        2
2015-11-04 01:00:00.000        1        1        2
2015-11-04 02:00:00.000        12        1        2
2015-11-04 03:00:00.000        5        1        2
2015-11-04 05:00:00.000        1        1        2
2015-11-04 06:00:00.000        4        1        2
2015-11-04 10:00:00.000        20        2        2
2015-11-04 11:00:00.000        19        4        2
2015-11-04 12:00:00.000        23        18        2
2015-11-05 02:00:00.000        1        1        2
2015-11-05 03:00:00.000        5        1        2
2015-11-05 04:00:00.000        25        2        2
2015-11-05 10:00:00.000        2        1        2
2015-11-05 11:00:00.000        3        1        2

为什么？！！

以及如何解决这个问题

Answer 1

我处理这个通过为模型设置两个键 DateValue 和 SiteInfoId

获得 ef(dbfirst) 和 Sql 查询之间的差异结果

get difference result between ef(dbfirst) and Sql Query

database

entity

entity-framework