未知的SQL查询

Question

我刚刚“完成”了我的第一个实体框架应用程序并使用了Express Profiler 2.2来查看数据库正在发生什么。

当我的程序启动时，我得到一些我不明白的SQL查询。 这是我应该担心的事情吗？

NB！我有不是启用迁移！

exec sp_reset_connection 

SELECT Count(*) 
FROM INFORMATION_SCHEMA.TABLES AS t 
WHERE t.TABLE_SCHEMA + '.' + t.TABLE_NAME IN ('dbo.AssemblyCode','dbo.Fixture','dbo.HistoryData','dbo.LaserData','dbo.QuarterCode','dbo.SerialNumber','dbo.WeekCode') 
    OR t.TABLE_NAME = 'EdmMetadata' 

exec sp_reset_connection 

exec sp_executesql N'SELECT 
    [GroupBy1].[A1] AS [C1] 
    FROM (SELECT 
     COUNT(1) AS [A1] 
     FROM [dbo].[__MigrationHistory] AS [Extent1] 
     WHERE [Extent1].[ContextKey] = @p__linq__0 
    ) AS [GroupBy1]',N'@p__linq__0 nvarchar(4000)',@p__linq__0=N'DCMarkerEF.DCLasermarkContext' 

exec sp_reset_connection 

SELECT 
    [GroupBy1].[A1] AS [C1] 
    FROM (SELECT 
     COUNT(1) AS [A1] 
     FROM [dbo].[__MigrationHistory] AS [Extent1] 
    ) AS [GroupBy1] 

exec sp_reset_connection 

SELECT TOP (1) 
    [Extent1].[Id] AS [Id], 
    [Extent1].[ModelHash] AS [ModelHash] 
    FROM [dbo].[EdmMetadata] AS [Extent1] 
    ORDER BY [Extent1].[Id] DESC 

Answer 1

没有什么可担心的，但你可以摆脱一些人，看到这一点：romiller.com/2014/06/10/reducing-code-first-database-chatter

Answer 2

请，试试吧：

https://weblogs.asp.net/shijuvarghese/removing-edmmetadata-table-in-ef-code-first

modelBuilder.Conventions.Remove<IncludeMetadataConvention>();