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EntityFramework Any 生成的sql语句超长。

2014-03-13 10:57 183 查看
今天早上在做一个新功能的时候发现了有一个bug.

跟踪的时候发现

 

Service Error: SQL 语句的某些部分嵌套过深。请重写查询或将其分解为若干较小的查询。. <!-- at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)

at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)

at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()

at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)

at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()

at System.Data.SqlClient.SqlDataReader.get_MetaData()

at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)

at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)

at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)

at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)

at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)

at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)

at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior)

at System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)-->

 

看一下我们的linq语句

   var query2 = ctx.Boxes.Where(b => PartyIds.Any(d => d == b.PartyID)); ParyIds是一个Int[]数组有72数字在里面

结果它生成的sql语句就超恐怖了。

 

SELECT

[Extent1].[Discriminator] AS [Discriminator],

[Extent1].[ID] AS [ID],

[Extent1].[PartyID] AS [PartyID],

FROM [dbo].[Boxes] AS [Extent1]

WHERE ([Extent1].[Discriminator] IN ('Inbox','Outbox','Box')) AND ( EXISTS (SELECT

1 AS [C1]

FROM (SELECT

[UnionAll70].[C1] AS [C1]

FROM (SELECT

[UnionAll69].[C1] AS [C1]

FROM (SELECT

[UnionAll68].[C1] AS [C1]

FROM (SELECT

[UnionAll67].[C1] AS [C1]

FROM (SELECT

[UnionAll66].[C1] AS [C1]

FROM (SELECT

[UnionAll65].[C1] AS [C1]

FROM (SELECT

[UnionAll64].[C1] AS [C1]

FROM (SELECT

[UnionAll63].[C1] AS [C1]

FROM (SELECT

[UnionAll62].[C1] AS [C1]

FROM (SELECT

[UnionAll61].[C1] AS [C1]

FROM (SELECT

[UnionAll60].[C1] AS [C1]

FROM (SELECT

[UnionAll59].[C1] AS [C1]

FROM (SELECT

[UnionAll58].[C1] AS [C1]

FROM (SELECT

[UnionAll57].[C1] AS [C1]

FROM (SELECT

[UnionAll56].[C1] AS [C1]

FROM (SELECT

[UnionAll55].[C1] AS [C1]

FROM (SELECT

[UnionAll54].[C1] AS [C1]

FROM (SELECT

[UnionAll53].[C1] AS [C1]

FROM (SELECT

[UnionAll52].[C1] AS [C1]

FROM (SELECT

[UnionAll51].[C1] AS [C1]

FROM (SELECT

[UnionAll50].[C1] AS [C1]

FROM (SELECT

[UnionAll49].[C1] AS [C1]

FROM (SELECT

[UnionAll48].[C1] AS [C1]

FROM (SELECT

[UnionAll47].[C1] AS [C1]

FROM (SELECT

[UnionAll46].[C1] AS [C1]

FROM (SELECT

[UnionAll45].[C1] AS [C1]

FROM (SELECT

[UnionAll44].[C1] AS [C1]

FROM (SELECT

[UnionAll43].[C1] AS [C1]

FROM (SELECT

[UnionAll42].[C1] AS [C1]

FROM (SELECT

[UnionAll41].[C1] AS [C1]

FROM (SELECT

[UnionAll40].[C1] AS [C1]

FROM (SELECT

[UnionAll39].[C1] AS [C1]

FROM (SELECT

[UnionAll38].[C1] AS [C1]

FROM (SELECT

[UnionAll37].[C1] AS [C1]

FROM (SELECT

[UnionAll36].[C1] AS [C1]

FROM (SELECT

[UnionAll35].[C1] AS [C1]

FROM (SELECT

[UnionAll34].[C1] AS [C1]

FROM (SELECT

[UnionAll33].[C1] AS [C1]

FROM (SELECT

[UnionAll32].[C1] AS [C1]

FROM (SELECT

[UnionAll31].[C1] AS [C1]

FROM (SELECT

[UnionAll30].[C1] AS [C1]

FROM (SELECT

[UnionAll29].[C1] AS [C1]

FROM (SELECT

[UnionAll28].[C1] AS [C1]

FROM (SELECT

[UnionAll27].[C1] AS [C1]

FROM (SELECT

[UnionAll26].[C1] AS [C1]

FROM (SELECT

[UnionAll25].[C1] AS [C1]

FROM (SELECT

[UnionAll24].[C1] AS [C1]

FROM (SELECT

[UnionAll23].[C1] AS [C1]

FROM (SELECT

[UnionAll22].[C1] AS [C1]

FROM (SELECT

[UnionAll21].[C1] AS [C1]

FROM (SELECT

[UnionAll20].[C1] AS [C1]

FROM (SELECT

[UnionAll19].[C1] AS [C1]

FROM (SELECT

[UnionAll18].[C1] AS [C1]

FROM (SELECT

[UnionAll17].[C1] AS [C1]

FROM (SELECT

[UnionAll16].[C1] AS [C1]

FROM (SELECT

[UnionAll15].[C1] AS [C1]

FROM (SELECT

[UnionAll14].[C1] AS [C1]

FROM (SELECT

[UnionAll13].[C1] AS [C1]

FROM (SELECT

[UnionAll12].[C1] AS [C1]

FROM (SELECT

[UnionAll11].[C1] AS [C1]

FROM (SELECT

[UnionAll10].[C1] AS [C1]

FROM (SELECT

[UnionAll9].[C1] AS [C1]

FROM (SELECT

[UnionAll8].[C1] AS [C1]

FROM (SELECT

[UnionAll7].[C1] AS [C1]

FROM (SELECT

[UnionAll6].[C1] AS [C1]

FROM (SELECT

[UnionAll5].[C1] AS [C1]

FROM (SELECT

[UnionAll4].[C1] AS [C1]

FROM (SELECT

[UnionAll3].[C1] AS [C1]

FROM (SELECT

[UnionAll2].[C1] AS [C1]

FROM (SELECT

[UnionAll1].[C1] AS [C1]

FROM (SELECT

89 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable1]

UNION ALL

SELECT

88 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable2]) AS [UnionAll1]

UNION ALL

SELECT

87 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable3]) AS [UnionAll2]

UNION ALL

SELECT

86 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable4]) AS [UnionAll3]

UNION ALL

SELECT

85 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable5]) AS [UnionAll4]

UNION ALL

SELECT

84 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable6]) AS [UnionAll5]

UNION ALL

SELECT

83 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable7]) AS [UnionAll6]

UNION ALL

SELECT

82 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable8]) AS [UnionAll7]

UNION ALL

SELECT

81 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable9]) AS [UnionAll8]

UNION ALL

SELECT

80 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable10]) AS [UnionAll9]

UNION ALL

SELECT

79 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable11]) AS [UnionAll10]

UNION ALL

SELECT

78 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable12]) AS [UnionAll11]

UNION ALL

SELECT

77 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable13]) AS [UnionAll12]

UNION ALL

SELECT

76 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable14]) AS [UnionAll13]

UNION ALL

SELECT

75 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable15]) AS [UnionAll14]

UNION ALL

SELECT

72 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable16]) AS [UnionAll15]

UNION ALL

SELECT

71 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable17]) AS [UnionAll16]

UNION ALL

SELECT

70 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable18]) AS [UnionAll17]

UNION ALL

SELECT

69 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable19]) AS [UnionAll18]

UNION ALL

SELECT

68 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable20]) AS [UnionAll19]

UNION ALL

SELECT

67 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable21]) AS [UnionAll20]

UNION ALL

SELECT

66 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable22]) AS [UnionAll21]

UNION ALL

SELECT

65 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable23]) AS [UnionAll22]

UNION ALL

SELECT

64 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable24]) AS [UnionAll23]

UNION ALL

SELECT

63 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable25]) AS [UnionAll24]

UNION ALL

SELECT

62 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable26]) AS [UnionAll25]

UNION ALL

SELECT

61 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable27]) AS [UnionAll26]

UNION ALL

SELECT

60 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable28]) AS [UnionAll27]

UNION ALL

SELECT

59 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable29]) AS [UnionAll28]

UNION ALL

SELECT

55 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable30]) AS [UnionAll29]

UNION ALL

SELECT

54 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable31]) AS [UnionAll30]

UNION ALL

SELECT

53 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable32]) AS [UnionAll31]

UNION ALL

SELECT

52 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable33]) AS [UnionAll32]

UNION ALL

SELECT

51 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable34]) AS [UnionAll33]

UNION ALL

SELECT

50 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable35]) AS [UnionAll34]

UNION ALL

SELECT

49 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable36]) AS [UnionAll35]

UNION ALL

SELECT

48 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable37]) AS [UnionAll36]

UNION ALL

SELECT

47 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable38]) AS [UnionAll37]

UNION ALL

SELECT

46 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable39]) AS [UnionAll38]

UNION ALL

SELECT

45 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable40]) AS [UnionAll39]

UNION ALL

SELECT

44 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable41]) AS [UnionAll40]

UNION ALL

SELECT

43 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable42]) AS [UnionAll41]

UNION ALL

SELECT

42 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable43]) AS [UnionAll42]

UNION ALL

SELECT

41 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable44]) AS [UnionAll43]

UNION ALL

SELECT

40 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable45]) AS [UnionAll44]

UNION ALL

SELECT

39 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable46]) AS [UnionAll45]

UNION ALL

SELECT

38 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable47]) AS [UnionAll46]

UNION ALL

SELECT

37 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable48]) AS [UnionAll47]

UNION ALL

SELECT

36 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable49]) AS [UnionAll48]

UNION ALL

SELECT

35 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable50]) AS [UnionAll49]

UNION ALL

SELECT

34 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable51]) AS [UnionAll50]

UNION ALL

SELECT

33 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable52]) AS [UnionAll51]

UNION ALL

SELECT

32 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable53]) AS [UnionAll52]

UNION ALL

SELECT

31 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable54]) AS [UnionAll53]

UNION ALL

SELECT

30 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable55]) AS [UnionAll54]

UNION ALL

SELECT

29 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable56]) AS [UnionAll55]

UNION ALL

SELECT

28 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable57]) AS [UnionAll56]

UNION ALL

SELECT

27 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable58]) AS [UnionAll57]

UNION ALL

SELECT

26 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable59]) AS [UnionAll58]

UNION ALL

SELECT

25 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable60]) AS [UnionAll59]

UNION ALL

SELECT

24 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable61]) AS [UnionAll60]

UNION ALL

SELECT

23 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable62]) AS [UnionAll61]

UNION ALL

SELECT

22 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable63]) AS [UnionAll62]

UNION ALL

SELECT

21 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable64]) AS [UnionAll63]

UNION ALL

SELECT

20 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable65]) AS [UnionAll64]

UNION ALL

SELECT

19 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable66]) AS [UnionAll65]

UNION ALL

SELECT

18 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable67]) AS [UnionAll66]

UNION ALL

SELECT

17 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable68]) AS [UnionAll67]

UNION ALL

SELECT

16 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable69]) AS [UnionAll68]

UNION ALL

SELECT

3 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable70]) AS [UnionAll69]

UNION ALL

SELECT

2 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable71]) AS [UnionAll70]

UNION ALL

SELECT

1 AS [C1]

FROM ( SELECT 1 AS X ) AS [SingleRowTable72]) AS [UnionAll71]

WHERE [UnionAll71].[C1] = [Extent1].[PartyID]

))

 

 

 换成另一种写法就ok了

var query = from it in ctx.Boxes where PartyIds.Contains(it.PartyID) select it;

生成的sql语句就跟我们正常写的差不多了

SELECT 

[Extent1].[ID] AS [ID], 

[Extent1].[Discriminator] AS [Discriminator], 

[Extent1].[PartyID] AS [PartyID], 

FROM [dbo].[Boxes] AS [Extent1]

WHERE ([Extent1].[Discriminator] IN ('Inbox','Outbox','Box')) AND ([Extent1].[PartyID] IN (89,88,87,86,85,84,83,82,81,80,79,78,77,76,75,72,71,70,69,68,67,66,65,64,63,62,61,60,59,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,3,2,1))

============================
 var query2 = ctx.Boxes.Where(b => PartyIds.Any(d => d == b.PartyID)); ParyIds是一个Int[]数组有72数字在里面

var query = from it in ctx.Boxes where PartyIds.Contains(it.PartyID)
select it;
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