Sql server LinQ查询日期和分组依据的位置

嘿，我正在尽我最大的努力得到以下查询：

SELECT     Client, Code, COUNT(SessionID) AS Count
FROM       dbo.vw_TrackingAppsCompleteDistinctDate
WHERE      (Date > CONVERT(DATETIME, '2012-12-01 00:00:00', 102) AND Date < CONVERT(DATETIME, '2013-01-01 00:00:00', 102))
GROUP BY   URL, Code, Client
ORDER BY   Client, Code

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有什么建议吗？

我正在尝试使用分组创建相应的查询以供练习。我不能100%确定linq是否能让你得到你所希望的结果，因为我无法测试它

我想，

orderby

可能会有所不同，因为我不知道SQL是在分组之前还是之后对结果进行排序

var result = from record in dbo.vw_TrackingAppsCompleteDistinctDate
             where record.Date.CompareTo( new DateTime( 2012, 12, 1, 0, 0, 0 ) ) > 0
             where record.Date.CompareTo( new DateTime( 2013, 1, 1, 0, 0, 0 ) ) < 0
             group record by new { record.URL, record.Code, record.Client } into grp
             orderby grp.Key.Client, grp.Key.Code
             select new 
             {
                 Client = grp.Key.Client,
                 Code = grp.Key.Code,
                 Count = grp.Select( item => item.SessionID ).Count( )
             };

var result=来自dbo.vw\u跟踪AppsCompletedDistinctDate中的记录
其中record.Date.CompareTo（新的日期时间（2012,12,1,0,0,0））>0
其中record.Date.CompareTo（新的日期时间（2013,1,1,0,0,0））<0
按新的{record.URL，record.Code，record.Client}将记录分组到grp中
orderby grp.Key.Client，grp.Key.Code
选择新的
{
Client=grp.Key.Client，
代码=grp.Key.Code，
Count=grp.Select（item=>item.SessionID）.Count（）
};

使用SQL到LinQ转换器获得：

Dim query = From
              Vw_TrackingAppsCompleteDistinctDates In db.vw_TrackingAppsCompleteDistinctDates
            Where
              Vw_TrackingAppsCompleteDistinctDates.Date > CDate("2012-12-01 00:00:00") 
            And Vw_TrackingAppsCompleteDistinctDates.Date < CDate("2013-01-01 00:00:00")
            Group Vw_TrackingAppsCompleteDistinctDates By
              Vw_TrackingAppsCompleteDistinctDates.URL,
              Vw_TrackingAppsCompleteDistinctDates.Code,
              Vw_TrackingAppsCompleteDistinctDates.Client
            Into g = Group
            Order By Client, Code
            Select
              Client, Code, Count = CType(g.Count(Function(p) p.SessionID <> Nothing), Int64?)

Dim query=From
Vw_TrackingAppsCompletedDistinctDates在db中。Vw_TrackingAppsCompletedDistinctDates
哪里
Vw_TrackingAppsCompletedDistinctDates.Date>CDate（“2012-12-01 00:00:00”）
和Vw_Tracking Apps Completed DistinctDates.Date

我发现Linqpad在这些情况下非常宝贵，它能够显示为LINQ语句生成的SQL。

Dim query = From
              Vw_TrackingAppsCompleteDistinctDates In db.vw_TrackingAppsCompleteDistinctDates
            Where
              Vw_TrackingAppsCompleteDistinctDates.Date > CDate("2012-12-01 00:00:00") 
            And Vw_TrackingAppsCompleteDistinctDates.Date < CDate("2013-01-01 00:00:00")
            Group Vw_TrackingAppsCompleteDistinctDates By
              Vw_TrackingAppsCompleteDistinctDates.URL,
              Vw_TrackingAppsCompleteDistinctDates.Code,
              Vw_TrackingAppsCompleteDistinctDates.Client
            Into g = Group
            Order By Client, Code
            Select
              Client, Code, Count = CType(g.Count(Function(p) p.SessionID <> Nothing), Int64?)