Our SharePoint instance threw the following errors when attempting to access data through a Content Query Tool:
04/02/2010 10:45:06.12  w3wp.exe (0x062C)                           0x1734  Windows SharePoint Services     Database                        5586    Critical    Unknown SQL Exception 206 occured. Additional error information from SQL Server is included below.  Operand type clash: uniqueidentifier is incompatible with datetime
04/02/2010 10:45:06.25  w3wp.exe (0x062C)                           0x1734  Office Server                   Office Server General           900n    Critical    A runtime exception was detected. Details follow.  Message: Operand type clash: uniqueidentifier is incompatible with datetime  Techinal Details: System.Data.SqlClient.SqlException: Operand type clash: uniqueidentifier is incompatible with datetime     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(TdsParserStateObject stateObj)     at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)     at System.Data.SqlClient.SqlDataReader.ConsumeMetaData(...
04/02/2010 10:45:06.25* w3wp.exe (0x062C)                           0x1734  Office Server                   Office Server General           900n    Critical    ...)     at System.Data.SqlClient.SqlDataReader.get_MetaData()     at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)     at System.Data.SqlClient.SqlC
04/02/2010 10:45:06.25  w3wp.exe (0x062C)                           0x1734  CMS                             Publishing                      8vyd    Exception   (Watson Reporting Cancelled) System.Data.SqlClient.SqlException: Operand type clash: uniqueidentifier is incompatible with datetime     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(TdsParserStateObject stateObj)     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.FinishExecuteRead...
04/02/2010 10:45:06.25* w3wp.exe (0x062C)                           0x1734  CMS                             Publishing                      8vyd    Exception   ...er(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.ExecuteReader(CommandBehavior behavior)     at Microsoft.SharePoint.Utilities.SqlSession.ExecuteReader(SqlCommand command, ...
04/02/2010 10:45:06.25* w3wp.exe (0x062C)                           0x1734  CMS                             Publishing                      8vyd    Exception   ...CommandBehavior behavior)     at Microsoft.SharePoint.SPSqlClient.ExecuteQuery(Boolean& bSucceed)     at Microsoft.SharePoint.Library.SPRequestInternalClass.CrossListQuery(String bstrUrl, String bstrXmlWebs, String bstrXmlLists, String bstrXmlQuery, ISP2DSafeArrayWriter pCallback, Object& pvarColumns)     at Microsoft.SharePoint.Library.SPRequest.CrossListQuery(String bstrUrl, String bstrXmlWebs, String bstrXmlLists, String bstrXmlQuery, ISP2DSafeArrayWriter pCallback, Object& pvarColumns)     at Microsoft.SharePoint.SPWeb.GetSiteData(SPSiteDataQuery query)     at Microsoft.SharePoint.Publishing.CachedArea.GetCrossListQuery(SPSiteDataQuery query, SPWeb currentContext)     at Microsoft.SharePoint.Publishing.CrossListQueryCache.GetSiteData(CachedArea cachedArea, SPWeb web, SPSiteDataQuery qu...
04/02/2010 10:45:06.25* w3wp.exe (0x062C)                           0x1734  CMS                             Publishing                      8vyd    Exception   ...ery)
04/02/2010 10:45:06.25  w3wp.exe (0x062C)                           0x1734  CMS                             Publishing                      78ed    Warning     Error occured while processing a Content Query Web Part. Performing the following query '
04/02/2010 10:45:06.25* w3wp.exe (0x062C)                           0x1734  CMS                             Publishing                      78ed    Warning     ...ue" Type="Number"/
The farm is MOSS 2007 with SQL Server 2005 backend.
Any ideas are welcomed.
Dale