Sql 在EF中，您必须为EF编写自己的数据库提供程序，以便生成更好的查询。 SELECT [Extent1].[Id] AS [Id], N'ODATAModel.LatestFiguresView' AS [C1], N'EntityType,Name,

在EF中，您必须为EF编写自己的数据库提供程序，以便生成更好的查询。

SELECT 
[Extent1].[Id] AS [Id], 
N'ODATAModel.LatestFiguresView' AS [C1], 
N'EntityType,Name,RegistrationNumber,OfficeNumber,DateRegistered,...,Id' AS [C2], 
[Extent1].[EntityType] AS [EntityType], 
[Extent1].[Name] AS [Name], 
[Extent1].[RegistrationNumber] AS [RegistrationNumber], 
[Extent1].[OfficeNumber] AS [OfficeNumber], 
... Loads of other columns ...
,
N'' AS [C12]
FROM (SELECT 
      [LatestFiguresView].[Id] AS [Id], 
      [LatestFiguresView].[EntityType] AS [EntityType], 
      [LatestFiguresView].[Name] AS [Name], 
      [LatestFiguresView].[RegistrationNumber] AS [RegistrationNumber], 
      [LatestFiguresView].[OfficeNumber] AS [OfficeNumber], 
... Loads of those same columns ...

FROM [dbo].[LatestFiguresView] AS [LatestFiguresView]) AS [Extent1]
WHERE (N'Registered' = [Extent1].[RegistrationStatus]) 
    AND ((1 = [Extent1].[Reservation]) 
    OR (1 = (CASE WHEN ([Extent1].[Name] LIKE N'%White%') 
    THEN cast(1 as bit) 
    WHEN ( NOT ([Extent1].[Name] LIKE N'%White%')) 
    THEN cast(0 as bit) END)) 
    OR (1 = (CASE WHEN ([Extent1].[Sectors] LIKE '%Business%') 
    THEN cast(1 as bit) 
    WHEN ( NOT ([Extent1].[Sectors] LIKE '%Business%')) 
    THEN cast(0 as bit) END)) 
    OR ((1 = (CASE WHEN ... etc, etc ... END))))