我们的工厂有一条新的生产线，有一堆测试人员。这些测试人员正在运行LabView，并将他们的数据记录到由TestStand生成的SQL数据库中。
我在c＃中编写了一个程序，并使用Entity FrameWork 6根据几个过滤器（即日期和测试者编号）检索数据。
我发现需要从多个表中检索数据的查询运行速度非常慢。
以下是查询的示例
using (var db = new LoggingEntities())
{
db.Configuration.AutoDetectChangesEnabled = false;
db.Configuration.LazyLoadingEnabled = false;
db.Configuration.ProxyCreationEnabled = false;
db.Database.CommandTimeout = 5000;
var Results = db.UUT_RESULT.Include("STEP_RESULT")
.Include("STEP_RESULT.STEP_NUMERICLIMIT1") .Include("STEP_RESULT.STEP_NUMERICLIMIT1.STEP_NUMERICLIMIT2")
.Include("STEP_RESULT.PROP_RESULT")
.AsNoTracking()
.Where(x => x.STATION_ID == SelectedTester && x.START_DATE_TIME.Value >= StartFilterDate && x.START_DATE_TIME.Value <= endDate).ToList();
}
在撰写本文时，上述查询已运行40分钟。我估计在所有5个表中总共检索336,000行。
如果我在没有包含的情况下运行上述操作，则会在几秒钟内完成查询并检索到500行。
只是一些额外的信息。
SQL在SQLEXPRESS上运行 - 是的，我知道这不是很好，我们计划将它移到我们的SQL服务器上。
表中的所有主键都是GUID数据类型，因此是关系列。
基于以上所述，这是预期的吗？特别是SQLEXPRESS？或者是否有人怀疑其他问题？
根据我的工作机会，有没有更好的做法，表现明智？
编辑：SQL事件探查器跟踪
exec sp_executesql N'SELECT
[Project4].[C1] AS [C1],
[Project4].[ID] AS [ID],
[Project4].[STATION_ID] AS [STATION_ID],
[Project4].[BATCH_SERIAL_NUMBER] AS [BATCH_SERIAL_NUMBER],
[Project4].[TEST_SOCKET_INDEX] AS [TEST_SOCKET_INDEX],
[Project4].[UUT_SERIAL_NUMBER] AS [UUT_SERIAL_NUMBER],
[Project4].[USER_LOGIN_NAME] AS [USER_LOGIN_NAME],
[Project4].[START_DATE_TIME] AS [START_DATE_TIME],
[Project4].[EXECUTION_TIME] AS [EXECUTION_TIME],
[Project4].[UUT_STATUS] AS [UUT_STATUS],
[Project4].[UUT_ERROR_CODE] AS [UUT_ERROR_CODE],
[Project4].[UUT_ERROR_MESSAGE] AS [UUT_ERROR_MESSAGE],
[Project4].[PART_NUMBER] AS [PART_NUMBER],
[Project4].[TSR_FILE_NAME] AS [TSR_FILE_NAME],
[Project4].[TSR_FILE_ID] AS [TSR_FILE_ID],
[Project4].[TSR_FILE_CLOSED] AS [TSR_FILE_CLOSED],
[Project4].[StationType] AS [StationType],
[Project4].[C57] AS [C2],
[Project4].[C3] AS [C3],
[Project4].[C4] AS [C4],
[Project4].[C5] AS [C5],
[Project4].[C6] AS [C6],
[Project4].[C7] AS [C7],
[Project4].[C8] AS [C8],
[Project4].[C9] AS [C9],
[Project4].[C10] AS [C10],
[Project4].[C11] AS [C11],
[Project4].[C12] AS [C12],
[Project4].[C13] AS [C13],
[Project4].[C14] AS [C14],
[Project4].[C15] AS [C15],
[Project4].[C16] AS [C16],
[Project4].[C17] AS [C17],
[Project4].[C18] AS [C18],
[Project4].[C19] AS [C19],
[Project4].[C20] AS [C20],
[Project4].[C21] AS [C21],
[Project4].[C22] AS [C22],
[Project4].[C23] AS [C23],
[Project4].[C24] AS [C24],
[Project4].[C25] AS [C25],
[Project4].[C2] AS [C26],
[Project4].[C26] AS [C27],
[Project4].[C27] AS [C28],
[Project4].[C28] AS [C29],
[Project4].[C29] AS [C30],
[Project4].[C30] AS [C31],
[Project4].[C31] AS [C32],
[Project4].[C32] AS [C33],
[Project4].[C33] AS [C34],
[Project4].[C34] AS [C35],
[Project4].[C35] AS [C36],
[Project4].[C36] AS [C37],
[Project4].[C37] AS [C38],
[Project4].[C38] AS [C39],
[Project4].[C39] AS [C40],
[Project4].[C40] AS [C41],
[Project4].[C41] AS [C42],
[Project4].[C42] AS [C43],
[Project4].[C43] AS [C44],
[Project4].[C44] AS [C45],
[Project4].[C45] AS [C46],
[Project4].[C46] AS [C47],
[Project4].[C47] AS [C48],
[Project4].[C48] AS [C49],
[Project4].[C49] AS [C50],
[Project4].[C50] AS [C51],
[Project4].[C51] AS [C52],
[Project4].[C52] AS [C53],
[Project4].[C53] AS [C54],
[Project4].[C54] AS [C55],
[Project4].[C55] AS [C56],
[Project4].[C56] AS [C57]
FROM ( SELECT
[Project1].[ID] AS [ID],
[Project1].[STATION_ID] AS [STATION_ID],
[Project1].[BATCH_SERIAL_NUMBER] AS [BATCH_SERIAL_NUMBER],
[Project1].[TEST_SOCKET_INDEX] AS [TEST_SOCKET_INDEX],
[Project1].[UUT_SERIAL_NUMBER] AS [UUT_SERIAL_NUMBER],
[Project1].[USER_LOGIN_NAME] AS [USER_LOGIN_NAME],
[Project1].[START_DATE_TIME] AS [START_DATE_TIME],
[Project1].[EXECUTION_TIME] AS [EXECUTION_TIME],
[Project1].[UUT_STATUS] AS [UUT_STATUS],
[Project1].[UUT_ERROR_CODE] AS [UUT_ERROR_CODE],
[Project1].[UUT_ERROR_MESSAGE] AS [UUT_ERROR_MESSAGE],
[Project1].[PART_NUMBER] AS [PART_NUMBER],
[Project1].[TSR_FILE_NAME] AS [TSR_FILE_NAME],
[Project1].[TSR_FILE_ID] AS [TSR_FILE_ID],
[Project1].[TSR_FILE_CLOSED] AS [TSR_FILE_CLOSED],
[Project1].[StationType] AS [StationType],
[Project1].[C1] AS [C1],
[UnionAll1].[C1] AS [C2],
[UnionAll1].[C2] AS [C3],
[UnionAll1].[ID] AS [C4],
[UnionAll1].[UUT_RESULT] AS [C5],
[UnionAll1].[STEP_PARENT] AS [C6],
[UnionAll1].[ORDER_NUMBER] AS [C7],
[UnionAll1].[STEP_NAME] AS [C8],
[UnionAll1].[STEP_TYPE] AS [C9],
[UnionAll1].[STEP_GROUP] AS [C10],
[UnionAll1].[STEP_INDEX] AS [C11],
[UnionAll1].[STEP_ID] AS [C12],
[UnionAll1].[STATUS] AS [C13],
[UnionAll1].[REPORT_TEXT] AS [C14],
[UnionAll1].[ERROR_CODE] AS [C15],
[UnionAll1].[ERROR_MESSAGE] AS [C16],
[UnionAll1].[CAUSED_SEQFAIL] AS [C17],
[UnionAll1].[MODULE_TIME] AS [C18],
[UnionAll1].[TOTAL_TIME] AS [C19],
[UnionAll1].[NUM_LOOPS] AS [C20],
[UnionAll1].[NUM_PASSED] AS [C21],
[UnionAll1].[NUM_FAILED] AS [C22],
[UnionAll1].[ENDING_LOOP_INDEX] AS [C23],
[UnionAll1].[LOOP_INDEX] AS [C24],
[UnionAll1].[INTERACTIVE_EXENUM] AS [C25],
[UnionAll1].[C3] AS [C26],
[UnionAll1].[ID1] AS [C27],
[UnionAll1].[STEP_RESULT] AS [C28],
[UnionAll1].[PROP_PARENT] AS [C29],
[UnionAll1].[ORDER_NUMBER1] AS [C30],
[UnionAll1].[NAME] AS [C31],
[UnionAll1].[PATH] AS [C32],
[UnionAll1].[CATEGORY] AS [C33],
[UnionAll1].[TYPE_VALUE] AS [C34],
[UnionAll1].[TYPE_NAME] AS [C35],
[UnionAll1].[DISPLAY_FORMAT] AS [C36],
[UnionAll1].[DATA] AS [C37],
[UnionAll1].[C4] AS [C38],
[UnionAll1].[ID2] AS [C39],
[UnionAll1].[PROP_RESULT] AS [C40],
[UnionAll1].[COMP_OPERATOR] AS [C41],
[UnionAll1].[HIGH_LIMIT] AS [C42],
[UnionAll1].[LOW_LIMIT] AS [C43],
[UnionAll1].[UNITS] AS [C44],
[UnionAll1].[STATUS1] AS [C45],
[UnionAll1].[C5] AS [C46],
[UnionAll1].[C6] AS [C47],
[UnionAll1].[C7] AS [C48],
[UnionAll1].[C8] AS [C49],
[UnionAll1].[C9] AS [C50],
[UnionAll1].[C10] AS [C51],
[UnionAll1].[C11] AS [C52],
[UnionAll1].[C12] AS [C53],
[UnionAll1].[C13] AS [C54],
[UnionAll1].[C14] AS [C55],
[UnionAll1].[C15] AS [C56],
CASE WHEN ([UnionAll1].[ID] IS NULL) THEN CAST(NULL AS int) ELSE 1 END AS [C57]
FROM (SELECT
[Extent1].[ID] AS [ID],
[Extent1].[STATION_ID] AS [STATION_ID],
[Extent1].[BATCH_SERIAL_NUMBER] AS [BATCH_SERIAL_NUMBER],
[Extent1].[TEST_SOCKET_INDEX] AS [TEST_SOCKET_INDEX],
[Extent1].[UUT_SERIAL_NUMBER] AS [UUT_SERIAL_NUMBER],
[Extent1].[USER_LOGIN_NAME] AS [USER_LOGIN_NAME],
[Extent1].[START_DATE_TIME] AS [START_DATE_TIME],
[Extent1].[EXECUTION_TIME] AS [EXECUTION_TIME],
[Extent1].[UUT_STATUS] AS [UUT_STATUS],
[Extent1].[UUT_ERROR_CODE] AS [UUT_ERROR_CODE],
[Extent1].[UUT_ERROR_MESSAGE] AS [UUT_ERROR_MESSAGE],
[Extent1].[PART_NUMBER] AS [PART_NUMBER],
[Extent1].[TSR_FILE_NAME] AS [TSR_FILE_NAME],
[Extent1].[TSR_FILE_ID] AS [TSR_FILE_ID],
[Extent1].[TSR_FILE_CLOSED] AS [TSR_FILE_CLOSED],
[Extent1].[StationType] AS [StationType],
1 AS [C1]
FROM [dbo].[UUT_RESULT] AS [Extent1]
WHERE (([Extent1].[STATION_ID] = @p__linq__0) OR (([Extent1].[STATION_ID] IS NULL) AND (@p__linq__0 IS NULL))) AND ([Extent1].[START_DATE_TIME] >= @p__linq__1) AND ([Extent1].[START_DATE_TIME] <= @p__linq__2) ) AS [Project1]
OUTER APPLY (SELECT
CASE WHEN ([Join1].[ID1] IS NULL) THEN CAST(NULL AS int) ELSE 1 END AS [C1],
1 AS [C2],
[Extent2].[ID] AS [ID],
[Extent2].[UUT_RESULT] AS [UUT_RESULT],
[Extent2].[STEP_PARENT] AS [STEP_PARENT],
[Extent2].[ORDER_NUMBER] AS [ORDER_NUMBER],
[Extent2].[STEP_NAME] AS [STEP_NAME],
[Extent2].[STEP_TYPE] AS [STEP_TYPE],
[Extent2].[STEP_GROUP] AS [STEP_GROUP],
[Extent2].[STEP_INDEX] AS [STEP_INDEX],
[Extent2].[STEP_ID] AS [STEP_ID],
[Extent2].[STATUS] AS [STATUS],
[Extent2].[REPORT_TEXT] AS [REPORT_TEXT],
[Extent2].[ERROR_CODE] AS [ERROR_CODE],
[Extent2].[ERROR_MESSAGE] AS [ERROR_MESSAGE],
[Extent2].[CAUSED_SEQFAIL] AS [CAUSED_SEQFAIL],
[Extent2].[MODULE_TIME] AS [MODULE_TIME],
[Extent2].[TOTAL_TIME] AS [TOTAL_TIME],
[Extent2].[NUM_LOOPS] AS [NUM_LOOPS],
[Extent2].[NUM_PASSED] AS [NUM_PASSED],
[Extent2].[NUM_FAILED] AS [NUM_FAILED],
[Extent2].[ENDING_LOOP_INDEX] AS [ENDING_LOOP_INDEX],
[Extent2].[LOOP_INDEX] AS [LOOP_INDEX],
[Extent2].[INTERACTIVE_EXENUM] AS [INTERACTIVE_EXENUM],
CASE WHEN ([Join1].[ID1] IS NULL) THEN CAST(NULL AS int) ELSE 1 END AS [C3],
[Join1].[ID1] AS [ID1],
[Join1].[STEP_RESULT] AS [STEP_RESULT],
[Join1].[PROP_PARENT] AS [PROP_PARENT],
[Join1].[ORDER_NUMBER] AS [ORDER_NUMBER1],
[Join1].[NAME] AS [NAME],
[Join1].[PATH] AS [PATH],
[Join1].[CATEGORY] AS [CATEGORY],
[Join1].[TYPE_VALUE] AS [TYPE_VALUE],
[Join1].[TYPE_NAME] AS [TYPE_NAME],
[Join1].[DISPLAY_FORMAT] AS [DISPLAY_FORMAT],
[Join1].[DATA] AS [DATA],
CASE WHEN ([Join1].[ID1] IS NULL) THEN CAST(NULL AS int) WHEN ([Join1].[ID2] IS NULL) THEN CAST(NULL AS int) ELSE 1 END AS [C4],
[Join1].[ID2] AS [ID2],
[Join1].[PROP_RESULT] AS [PROP_RESULT],
[Join1].[COMP_OPERATOR] AS [COMP_OPERATOR],
[Join1].[HIGH_LIMIT] AS [HIGH_LIMIT],
[Join1].[LOW_LIMIT] AS [LOW_LIMIT],
[Join1].[UNITS] AS [UNITS],
[Join1].[STATUS] AS [STATUS1],
CAST(NULL AS uniqueidentifier) AS [C5],
CAST(NULL AS uniqueidentifier) AS [C6],
CAST(NULL AS uniqueidentifier) AS [C7],
CAST(NULL AS int) AS [C8],
CAST(NULL AS varchar(1)) AS [C9],
CAST(NULL AS varchar(1)) AS [C10],
CAST(NULL AS int) AS [C11],
CAST(NULL AS int) AS [C12],
CAST(NULL AS varchar(1)) AS [C13],
CAST(NULL AS varchar(1)) AS [C14],
CAST(NULL AS varchar(1)) AS [C15]
FROM [dbo].[STEP_RESULT] AS [Extent2]
LEFT OUTER JOIN (SELECT [Extent3].[ID] AS [ID1], [Extent3].[STEP_RESULT] AS [STEP_RESULT], [Extent3].[PROP_PARENT] AS [PROP_PARENT], [Extent3].[ORDER_NUMBER] AS [ORDER_NUMBER], [Extent3].[NAME] AS [NAME], [Extent3].[PATH] AS [PATH], [Extent3].[CATEGORY] AS [CATEGORY], [Extent3].[TYPE_VALUE] AS [TYPE_VALUE], [Extent3].[TYPE_NAME] AS [TYPE_NAME], [Extent3].[DISPLAY_FORMAT] AS [DISPLAY_FORMAT], [Extent3].[DATA] AS [DATA], [Extent4].[ID] AS [ID2], [Extent4].[PROP_RESULT] AS [PROP_RESULT], [Extent4].[COMP_OPERATOR] AS [COMP_OPERATOR], [Extent4].[HIGH_LIMIT] AS [HIGH_LIMIT], [Extent4].[LOW_LIMIT] AS [LOW_LIMIT], [Extent4].[UNITS] AS [UNITS], [Extent4].[STATUS] AS [STATUS]
FROM [dbo].[STEP_NUMERICLIMIT1] AS [Extent3]
LEFT OUTER JOIN [dbo].[STEP_NUMERICLIMIT2] AS [Extent4] ON [Extent3].[ID] = [Extent4].[PROP_RESULT] ) AS [Join1] ON [Extent2].[ID] = [Join1].[STEP_RESULT]
WHERE [Project1].[ID] = [Extent2].[UUT_RESULT]
UNION ALL
SELECT
2 AS [C1],
2 AS [C2],
[Extent5].[ID] AS [ID],
[Extent5].[UUT_RESULT] AS [UUT_RESULT],
[Extent5].[STEP_PARENT] AS [STEP_PARENT],
[Extent5].[ORDER_NUMBER] AS [ORDER_NUMBER],
[Extent5].[STEP_NAME] AS [STEP_NAME],
[Extent5].[STEP_TYPE] AS [STEP_TYPE],
[Extent5].[STEP_GROUP] AS [STEP_GROUP],
[Extent5].[STEP_INDEX] AS [STEP_INDEX],
[Extent5].[STEP_ID] AS [STEP_ID],
[Extent5].[STATUS] AS [STATUS],
[Extent5].[REPORT_TEXT] AS [REPORT_TEXT],
[Extent5].[ERROR_CODE] AS [ERROR_CODE],
[Extent5].[ERROR_MESSAGE] AS [ERROR_MESSAGE],
[Extent5].[CAUSED_SEQFAIL] AS [CAUSED_SEQFAIL],
[Extent5].[MODULE_TIME] AS [MODULE_TIME],
[Extent5].[TOTAL_TIME] AS [TOTAL_TIME],
[Extent5].[NUM_LOOPS] AS [NUM_LOOPS],
[Extent5].[NUM_PASSED] AS [NUM_PASSED],
[Extent5].[NUM_FAILED] AS [NUM_FAILED],
[Extent5].[ENDING_LOOP_INDEX] AS [ENDING_LOOP_INDEX],
[Extent5].[LOOP_INDEX] AS [LOOP_INDEX],
[Extent5].[INTERACTIVE_EXENUM] AS [INTERACTIVE_EXENUM],
CAST(NULL AS int) AS [C3],
CAST(NULL AS uniqueidentifier) AS [C4],
CAST(NULL AS uniqueidentifier) AS [C5],
CAST(NULL AS uniqueidentifier) AS [C6],
CAST(NULL AS int) AS [C7],
CAST(NULL AS varchar(1)) AS [C8],
CAST(NULL AS varchar(1)) AS [C9],
CAST(NULL AS int) AS [C10],
CAST(NULL AS int) AS [C11],
CAST(NULL AS varchar(1)) AS [C12],
CAST(NULL AS varchar(1)) AS [C13],
CAST(NULL AS float) AS [C14],
CAST(NULL AS int) AS [C15],
CAST(NULL AS uniqueidentifier) AS [C16],
CAST(NULL AS uniqueidentifier) AS [C17],
CAST(NULL AS varchar(1)) AS [C18],
CAST(NULL AS float) AS [C19],
CAST(NULL AS float) AS [C20],
CAST(NULL AS varchar(1)) AS [C21],
CAST(NULL AS varchar(1)) AS [C22],
[Extent6].[ID] AS [ID1],
[Extent6].[STEP_RESULT] AS [STEP_RESULT],
[Extent6].[PROP_PARENT] AS [PROP_PARENT],
[Extent6].[ORDER_NUMBER] AS [ORDER_NUMBER1],
[Extent6].[NAME] AS [NAME],
[Extent6].[PATH] AS [PATH],
[Extent6].[CATEGORY] AS [CATEGORY],
[Extent6].[TYPE_VALUE] AS [TYPE_VALUE],
[Extent6].[TYPE_NAME] AS [TYPE_NAME],
[Extent6].[DISPLAY_FORMAT] AS [DISPLAY_FORMAT],
[Extent6].[DATA] AS [DATA]
FROM [dbo].[STEP_RESULT] AS [Extent5]
INNER JOIN [dbo].[PROP_RESULT] AS [Extent6] ON [Extent5].[ID] = [Extent6].[STEP_RESULT]
WHERE [Project1].[ID] = [Extent5].[UUT_RESULT]) AS [UnionAll1]
) AS [Project4]
ORDER BY [Project4].[ID] ASC, [Project4].[C57] ASC, [Project4].[C4] ASC, [Project4].[C2] ASC, [Project4].[C27] ASC, [Project4].[C38] ASC',N'@p__linq__0 varchar(8000),@p__linq__1 datetime2(7),@p__linq__2 datetime2(7)',@p__linq__0='SIDEPCBA',@p__linq__1='2017-08-03 00:00:00',@p__linq__2='2017-08-03 23:59:00'
答案 0 :(得分：0)
如果尚未完成，请检查-可以/应该为您的特定查询创建哪些索引。不会以任何方式对deault NI SQL数据库进行索引或优化。运行您的慢查询-然后查询此查询以检查可以做什么。
-- check what could be indexed
SELECT mig.*, statement AS table_name,
column_id, column_name, column_usage
FROM sys.dm_db_missing_index_details AS mid
CROSS APPLY sys.dm_db_missing_index_columns (mid.index_handle)
INNER JOIN sys.dm_db_missing_index_groups AS mig ON mig.index_handle = mid.index_handle
ORDER BY mig.index_group_handle, mig.index_handle, column_id;