0
我有一些LINQ的代碼,我不敢肯定它做什麼。基本上我從一些表中抽出一份報告。這個linq語句試圖返回大約1.45分鐘的227106條記錄。當我從代碼中執行它,它是給我一個「超時」異常:
An error occurred while executing the command definition. See the inner exception for details.
at System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior)
at System.Data.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext context, ObjectParameterCollection parameterValues)
at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
at System.Data.Entity.Internal.Linq.InternalQuery`1.GetEnumerator()
at System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at #####.Service.TrackingLogService.GetPastDayClickingReports(Guid AffiliateID, Int32 pastDays) in ...
的代碼如下:
var temp = (from l in logs
group l by new { l.AffiliateGUIDID, l.MarketingTool, l.RefereceURL } into g
select new ClickingReportItem
{
Name = g.Key.MarketingTool.Title,
MediaType = g.Key.MarketingTool.MediaType.Name,
RefereceURL = g.Key.RefereceURL,
Impressions = (g.Key.MarketingTool.ImpressionTracking.HasValue ? g.Key.MarketingTool.ImpressionTracking.Value : false)
? g.Count(m => m.TrackingTypeID == (int)Contract.TrackingType.Impressions) : (int?)null,
Clicks = g.Count(m => m.TrackingTypeID == (int)Contract.TrackingType.Clicks),
Registrations = g.Count(m => m.TrackingTypeID == (int)Contract.TrackingType.Registrations),
Purchases = 0,
Commissions = 0
}).OrderByDescending(m => new { m.Registrations,m.Clicks,m.Impressions}).AsQueryable();
return temp.ToList();
從幾個職位/博客我已經嘗試添加連接超時= 0到我的連接字符串,嘗試連接超時= 1800沒有用。
一些建議context.CommandTimeout = 240,但我不知道哪裏可以在我的代碼中應用CommandTimeout。
我在Linq不太好。
感謝
ClayCass
爲實體框架看http://stackoverflow.com/questions/6429594/command-timeout-with-entity-framework-4-1-code-first – hatchet