Excel + npgsql + postgres。 指定的转换不是有效的exception
我正尝试使用Power Query和Npgsql连接器将我的MS Excel 2013 Pro +与PostgreSQL数据库连接起来。
一切似乎都很好，直到 – 我会尝试运行自定义查询（例如，从表中select*）。 然后 – 出现错误消息：“指定的cas无效”。 如果我将使用数据库结构浏览器 – 我可以select表或视图，并点击“加载”，但它也给我同样的错误。
有什么我做错了，或者是在连接器有一些错误？
这里是Excel的堆栈跟踪：
Feedback Type: 皱眉（错误）
时间戳：2017-08-21T09：14：00.7435203Z
当地时间：2017-08-21T11：14：00.7435203 + 02：00
产品版本：2.48.4792.941（PQ-CY17SU07）（x86）
发布：2017年7月
Excel版本：15.0.4420.1017
Excel安装位置：C：\ Program Files \ Microsoft Office \ Office15 \ EXCEL.EXE
IE版本：11.0.9600.17843
操作系统版本：Microsoft Windows NT 6.1.7601 Service Pack 1（x86 pl-PL）
CLR版本：4.6.1或更高版本[版本号= 394271]
工作簿软件包信息：1 * – zh-CN，查询组：0，fastCombine：已禁用，runBackgroundAnalysis：True。
峰值工作集：268 MB
私人内存：231 MB
峰值虚拟内存：930 MB
错误消息：指定的转换无效。
堆栈跟踪：Microsoft.Mashup.Evaluator.Interface.ErrorException：指定的转换无效。 —> Microsoft.Mashup.Evaluator.Interface.ErrorException：指定的转换无效。 —> Microsoft.Mashup.Evaluator.Interface.ErrorException：指定的转换无效。 —> System.InvalidCastException：指定的转换无效。 —> System.InvalidCastException：指定的转换无效。 Microsoft.OleDb.Serialization.PageWriter.WriteSchema（DataTable schemaTable）at Microsoft.OleDb.Serialization.OleDbPageWriter..ctor（Stream stream，DataTable schemaTable）at Microsoft.Mashup.Evaluator.RemotePageReader。<> c__DisplayClass7.b__0（）at Microsoft .Mashup.Evaluator.EvaluationHost.ReportExceptions（IHostTrace trace，IEngineHost engineHost，IMessageChannel channel，Action action）—内部exception堆栈跟踪结束—在Microsoft.Mashup.Evaluator.EvaluationHost。<> c__DisplayClass7.b__6（）at Microsoft.Mashup.Evaluator.EvaluationHost.TryReportException（IHostTrace跟踪，IEngineHost engineHost，IMessageChannel通道，exception例外）上Microsoft.Mashup.Common.SafeExceptions.IgnoreSafeExceptions（IEngineHost主机，IHostTrace跟踪，操作操作）Microsoft.Mashup.Evaluator.EvaluationHost .ReportExceptions（IHostTrace跟踪，IEngineHost engineHost，IMessageChannel通道，动作操作）在Microsoft.Mashup.Evaluator.RemotePageReader.RunStub（IEngineHost engineHost，IMessage 1 getPageReader) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.<>c__DisplayClass11.<OnBeginGetDataReaderSource>b__f(EvaluationResult2 1 result）at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service。<> c__DisplayClass1e 1.<OnBeginGetResult>b__1b() at Microsoft.Mashup.Evaluator.EvaluationHost.ReportExceptions(IHostTrace trace, IEngineHost engineHost, IMessageChannel channel, Action action) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetResult[T](IMessageChannel channel, BeginGetResultMessage message, Action Channel channel，Func 1 getPageReader) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.<>c__DisplayClass11.<OnBeginGetDataReaderSource>b__f(EvaluationResult2 1.<OnBeginGetResult>b__1b() at Microsoft.Mashup.Evaluator.EvaluationHost.ReportExceptions(IHostTrace trace, IEngineHost engineHost, IMessageChannel channel, Action action) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetResult[T](IMessageChannel channel, BeginGetResultMessage message, Action 1 1.<OnBeginGetResult>b__1b() at Microsoft.Mashup.Evaluator.EvaluationHost.ReportExceptions(IHostTrace trace, IEngineHost engineHost, IMessageChannel channel, Action action) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetResult[T](IMessageChannel channel, BeginGetResultMessage message, Action （Microsoft.Mashup.Evaluator.MessageHandlers）上的Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.Service.OnBeginGetDataReaderSource（IMessageChannel通道，BeginGetDataReaderSourceMessage消息）上的Microsoft.Mashup.Evaluator.MessageHandlers。<> c__DisplayClassa 1.<AddHandler>b__8(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.ChannelMessenger.OnMessageWithUnknownChannel(IMessageChannel baseChannel, MessageWithUnknownChannel messageWithUnknownChannel) at Microsoft.Mashup.Evaluator.MessageHandlers.<>c__DisplayClassa 1.<AddHandler>b__8(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.ChannelMessenger.OnMessageWithUnknownChannel(IMessageChannel baseChannel, MessageWithUnknownChannel messageWithUnknownChannel) at Microsoft.Mashup.Evaluator.MessageHandlers.<>c__DisplayClassa 1.b__8（IMessageChannel channel，Message message）at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch（IMessageChannel channel，Message message）at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch（ IMessageChannel通道，消息消息）在Microsoft.Mashup.Evaluator.MevaluHandlers.Dispatch（IMessageChannel通道，消息消息）在Microsoft.Mashup.Evaluator.EvaluationHost.Run（）在Microsoft.Mashup.Container.EvaluationContainerMain.Run（对象参数）at Microsoft.Mashup.Evaluator.SafeThread2。<> c__DisplayClass2.b__0（Object o）at Microsoft.Mash （Microsoft.Mashup.Container.EvaluationContainerMain.SafeRun（String [] args）上的Microsoft.Mashup.Evaluator.SafeThread2。<> c__DisplayClass2.b__1（Object o）上的.evaluator.SafeThread2。<> c__DisplayClass15.b__14 Microsoft.Mashup.Container.EvaluationContainerMain.Main（String [] args）—在Microsoft.Mashup.Evaluator.EvaluationHost.OnException（IEngineHost engineHost，IMessageChannel通道，ExceptionMessage消息）处的内部exception堆栈跟踪结束。 Microsoft.Mashup.Evaluator.MessageHandlers上的Mashup.Evaluator.RemoteEvaluationContainerFactory.Container.OnException（IMessageChannel通道，ExceptionMessage消息）。<> c__DisplayClassa 1.<AddHandler>b__8(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.Interface.IMessageChannelExtensions.WaitFor[T](IMessageChannel channel) at Microsoft.Mashup.Evaluator.MessageBasedInputStream.ReadNextChunkAndCheckIfClosed() at Microsoft.Mashup.Evaluator.MessageBasedInputStream.ReadNextChunk() at Microsoft.Mashup.Evaluator.ChunkedInputStream.Read(Byte[] buffer, Int32 offset, Int32 count) at System.IO.BinaryReader.FillBuffer(Int32 numBytes) at System.IO.BinaryReader.ReadInt32() at Microsoft.Mashup.Evaluator.ITableSourceSerializationExtensions.ReadITableSource(BinaryReader reader) at Microsoft.Mashup.Evaluator.RemotePageReader.CreateProxy(IEngineHost engineHost, IMessageChannel channel, ExceptionHandler exceptionHandler) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.DataReaderSourceRemoteEvaluation.GetResult(Boolean enableFirewall) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation.Evaluate(Boolean enableFirewall) --- End of inner exception stack trace --- at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation 1.<AddHandler>b__8(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.Interface.IMessageChannelExtensions.WaitFor[T](IMessageChannel channel) at Microsoft.Mashup.Evaluator.MessageBasedInputStream.ReadNextChunkAndCheckIfClosed() at Microsoft.Mashup.Evaluator.MessageBasedInputStream.ReadNextChunk() at Microsoft.Mashup.Evaluator.ChunkedInputStream.Read(Byte[] buffer, Int32 offset, Int32 count) at System.IO.BinaryReader.FillBuffer(Int32 numBytes) at System.IO.BinaryReader.ReadInt32() at Microsoft.Mashup.Evaluator.ITableSourceSerializationExtensions.ReadITableSource(BinaryReader reader) at Microsoft.Mashup.Evaluator.RemotePageReader.CreateProxy(IEngineHost engineHost, IMessageChannel channel, ExceptionHandler exceptionHandler) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.DataReaderSourceRemoteEvaluation.GetResult(Boolean enableFirewall) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation.Evaluate(Boolean enableFirewall) --- End of inner exception stack trace --- at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation 1.<AddHandler>b__8(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.ChannelMessenger.ChannelMessageHandlers.TryDispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.MessageHandlers.Dispatch(IMessageChannel channel, Message message) at Microsoft.Mashup.Evaluator.Interface.IMessageChannelExtensions.WaitFor[T](IMessageChannel channel) at Microsoft.Mashup.Evaluator.MessageBasedInputStream.ReadNextChunkAndCheckIfClosed() at Microsoft.Mashup.Evaluator.MessageBasedInputStream.ReadNextChunk() at Microsoft.Mashup.Evaluator.ChunkedInputStream.Read(Byte[] buffer, Int32 offset, Int32 count) at System.IO.BinaryReader.FillBuffer(Int32 numBytes) at System.IO.BinaryReader.ReadInt32() at Microsoft.Mashup.Evaluator.ITableSourceSerializationExtensions.ReadITableSource(BinaryReader reader) at Microsoft.Mashup.Evaluator.RemotePageReader.CreateProxy(IEngineHost engineHost, IMessageChannel channel, ExceptionHandler exceptionHandler) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.DataReaderSourceRemoteEvaluation.GetResult(Boolean enableFirewall) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation.Evaluate(Boolean enableFirewall) --- End of inner exception stack trace --- at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation 1.TryCompleteWithException（exception例外）在Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation.Evaluate （对象状态）Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.EvaluationThread（Object state）at Microsoft.Mashup.Evaluator.GlobalizedEvaluatorThreadPool。<> c__DisplayClass4.b__3（Object s）at Microsoft.Mashup.Evaluator.EvaluatorThreadPool.EvaluatorThread（Object state） Microsoft.Mashup.Evaluator.SafeThread2。<> c__DisplayClass2.b__0（Object o）at Microsoft.Mashup.Evaluator.SafeThread2。<> c__DisplayClass15.b__14（Object o）at Microsoft.Mashup.Evaluator.SafeThread2。<> c__DisplayClass2.b__1 （Object o）在System.Threading.ThreadHelper.ThreadStart_Context（对象状态）在System.Threading.ExecutionContext.RunInternal（ExecutionContext executionContext，ContextCallbackcallback，对象s 在System.Threading.ExecutionContext.Run（ExecutionContext executionContext，ContextCallbackcallback，对象状态，布尔preserveSyncCtx）在System.Threading.ExecutionContext.Run（ExecutionContext executionContext，ContextCallbackcallback，对象状态）System.Threading.ThreadHelper .ThreadStart（Object obj）—内部exception堆栈跟踪结束—
服务器堆栈跟踪：
在Microsoft.OleDb.AsyncResult上的Microsoft.OleDb.AsyncResult 1.get_Value() at Microsoft.Mashup.OleDbProvider.DataHost.BufferingMashupEvaluator.BufferingMashupEvaluation.GetBufferedReaderSource(AsyncResult 1结果）上1.get_Value() at Microsoft.Mashup.OleDbProvider.DataHost.BufferingMashupEvaluator.BufferingMashupEvaluation.GetBufferedReaderSource(AsyncResultexception。 OnEvaluationComplete（AsyncResult`1结果）
在Microsoft.Mashup.Client.Excel.Fill.PollingFillDownloadWorker上Microsoft.Mashup.Client.Excel.Fill.PollingFillDownloadWorker.b__1（）上的Microsoft.Mashup.Host.ProviderShared.MashupResource.GetStatus（）处重新生成exception。 InvokeWorker（Func`1动作）
调用堆栈跟踪：Microsoft.Mashup.Client.ClientShared.FeedbackErrorInfo上的Microsoft.Mashup.Client.ClientShared.StackTraceInfo..ctor（String exceptionStackTrace，String invocationStackTrace）上的Microsoft.Mashup.Host.Document.ExceptionExtensions.GetCurrentInvocationStackTrace（） 1 errorCode, String requestId, Exception exception) at Microsoft.Mashup.Client.ClientShared.UnexpectedExceptionHandler.<>c__DisplayClass1.<HandleException>b__0() at Microsoft.Mashup.Host.Document.SynchronizationContextExtensions.SendAndMarshalExceptions(SynchronizationContext context, Action callback) at Microsoft.Mashup.Client.ClientShared.UnexpectedExceptionHandler.HandleException(Exception e) at Microsoft.Mashup.Client.Excel.Fill.FillSession.HandleDownloaderException(IWorkbook workbook, Exception e) at Microsoft.Mashup.Client.Excel.Fill.PollingInitialFillSession.FillDownloadResult(IWorkbook workbook, Boolean onTimer) at Microsoft.Mashup.Client.Excel.Fill.PollingInitialFillSession.<>c__DisplayClass4.<ResumeFill>b__0() at Microsoft.Mashup.Client.Excel.Fill.IUndoServicesExtensions.<>c__DisplayClass2.<InvokeWithConditionalDiscardedUndoScope>b__0(IUndoScope undoScope) at Microsoft.Mashup.Client.Excel.Shim.AddInUndoServices.InvokeUndoableAction(IWorkbook workbook, UndoableActionType actionType, Action ctor（String message，Nullable 1 errorCode, String requestId, Exception exception) at Microsoft.Mashup.Client.ClientShared.UnexpectedExceptionHandler.<>c__DisplayClass1.<HandleException>b__0() at Microsoft.Mashup.Host.Document.SynchronizationContextExtensions.SendAndMarshalExceptions(SynchronizationContext context, Action callback) at Microsoft.Mashup.Client.ClientShared.UnexpectedExceptionHandler.HandleException(Exception e) at Microsoft.Mashup.Client.Excel.Fill.FillSession.HandleDownloaderException(IWorkbook workbook, Exception e) at Microsoft.Mashup.Client.Excel.Fill.PollingInitialFillSession.FillDownloadResult(IWorkbook workbook, Boolean onTimer) at Microsoft.Mashup.Client.Excel.Fill.PollingInitialFillSession.<>c__DisplayClass4.<ResumeFill>b__0() at Microsoft.Mashup.Client.Excel.Fill.IUndoServicesExtensions.<>c__DisplayClass2.<InvokeWithConditionalDiscardedUndoScope>b__0(IUndoScope undoScope) at Microsoft.Mashup.Client.Excel.Shim.AddInUndoServices.InvokeUndoableAction(IWorkbook workbook, UndoableActionType actionType, Action 1 errorCode, String requestId, Exception exception) at Microsoft.Mashup.Client.ClientShared.UnexpectedExceptionHandler.<>c__DisplayClass1.<HandleException>b__0() at Microsoft.Mashup.Host.Document.SynchronizationContextExtensions.SendAndMarshalExceptions(SynchronizationContext context, Action callback) at Microsoft.Mashup.Client.ClientShared.UnexpectedExceptionHandler.HandleException(Exception e) at Microsoft.Mashup.Client.Excel.Fill.FillSession.HandleDownloaderException(IWorkbook workbook, Exception e) at Microsoft.Mashup.Client.Excel.Fill.PollingInitialFillSession.FillDownloadResult(IWorkbook workbook, Boolean onTimer) at Microsoft.Mashup.Client.Excel.Fill.PollingInitialFillSession.<>c__DisplayClass4.<ResumeFill>b__0() at Microsoft.Mashup.Client.Excel.Fill.IUndoServicesExtensions.<>c__DisplayClass2.<InvokeWithConditionalDiscardedUndoScope>b__0(IUndoScope undoScope) at Microsoft.Mashup.Client.Excel.Shim.AddInUndoServices.InvokeUndoableAction(IWorkbook workbook, UndoableActionType actionType, Action Microsoft.Mashup.Client.Excel.Fill.IUndoServicesExtensions.InvokeWithConditionalDiscardedUndoScope（IUndoServices undoServices，布尔条件，IWorkbook工作簿，UndoableActionType操作types，操作操作）上的1 errorCode, String requestId, Exception exception) at Microsoft.Mashup.Client.ClientShared.UnexpectedExceptionHandler.<>c__DisplayClass1.<HandleException>b__0() at Microsoft.Mashup.Host.Document.SynchronizationContextExtensions.SendAndMarshalExceptions(SynchronizationContext context, Action callback) at Microsoft.Mashup.Client.ClientShared.UnexpectedExceptionHandler.HandleException(Exception e) at Microsoft.Mashup.Client.Excel.Fill.FillSession.HandleDownloaderException(IWorkbook workbook, Exception e) at Microsoft.Mashup.Client.Excel.Fill.PollingInitialFillSession.FillDownloadResult(IWorkbook workbook, Boolean onTimer) at Microsoft.Mashup.Client.Excel.Fill.PollingInitialFillSession.<>c__DisplayClass4.<ResumeFill>b__0() at Microsoft.Mashup.Client.Excel.Fill.IUndoServicesExtensions.<>c__DisplayClass2.<InvokeWithConditionalDiscardedUndoScope>b__0(IUndoScope undoScope) at Microsoft.Mashup.Client.Excel.Shim.AddInUndoServices.InvokeUndoableAction(IWorkbook workbook, UndoableActionType actionType, Action 1操作）Microsoft.Mashup.Client.Excel .Fill.PollingInitialFillSession.ResumeFill（Boolean onTimer）at Microsoft.Mashup.Client.Excel.PollingFillManager.b__7（IFillSession fillSession）at Microsoft.Mashup.Client.ClientShared.Model.QueriesUtilities.ForEachWithChangeScope [T]（IEnumerable 1 items, Func 2 getQueries，动作1 action) at Microsoft.Mashup.Client.Excel.Fill.FillManager.ForEachFillSessionByWorkbook(Action 1动作）在Microsoft.Mashup.Client .Excel.PollingFillManager.UpdateQueries（）在Microsoft.Mashup.Client.Excel.PollingFillManager.b__6（）上的Microsoft.Mashup.Host.Document.ExceptionHandlerExtensions.HandleExceptions（IExceptionHandler exceptionHandler，Action操作）在Microsoft.Mashup.Client.Excel。 PollingFillManager.OnFillUpdateTimerTick（对象发件人，EventArgs eventArgs）在System.Windows.Forms.Timer.OnTick（EventArgs e）在System.Windows.Forms.Timer.TimerNativeWindow.WndProc（Message＆m）在System.Windows.Forms.NativeWindow.Callback （IntPtr hWnd，Int32 msg，IntPtr wparam，IntPtr lparam）
用户ID：f1b43d3f-ed65-4886-993e-0d6507a0de3f
支持高级内容：True
遥测启用：是
DPI比例：100％
公式：
第1节;
共享＃“DataRecords Campaign_000008”= DataRecords_Campaign_000008; DataRecords_Campaign_000008; DataRecords_Campaign_000008 =“DataRecords_Campaign_000008”=“DataRecords”，Item =“Campaign_000008”
共享＃“DataRecords_Campaign_000008_ChangeLog”= DataRecords_Campaign_000008_ChangeLog; DataRecords_Campaign_000008_ChangeLog; DataRecords_Campaign_000008_ChangeLog; DataRecords_Campaign_000008_ChangeLog; DataRecords_Campaign_000008_ChangeLog; DataRecords_Campaign_000008_ChangeLog; DataRecords_Campaign_000008_ChangeLog; DataRecords_Campaign_000008_ChangeLog;
答案是：在npgsql 3.2.5中的错误 – 在安装3.1.9之后 – 一切正常gr8;）