Handling NULL value in XML using getStringVal

I have below query which works fine if column 'XML_COL' has values. This select statement fails if the value is NULL for

select xmltype(t.xml_col).extract('//fax/text()').getStringVal() from mytab t

How to handle rows with NULL values in the column 'XML_COL'.

Posted On: Saturday 29th of December 2012 01:39:34 AM Total Views:  607
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... I'm trying to retreive info from a Excel file (Office XP) but I keep getting the same ERROR over and over again.I cant seem to get the connectionString to GET the Excel file. The ERROR is: Format of the initialization string does not conform to specification starting at index 48... Here's my code: public static List GetInfo() { string filename = "@C:\File.xls"; string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+filename+";Extended Properties=Excel 9.0;"; DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.OleDb"); List returnList = new List(); using (DbConnection connection = factory.CreateConnection()) { connection.ConnectionString = connectionString; //Here's where the ERROR occurs using (DbCommand command = connection.CreateCommand()) { .......... .......... .......... I've searched the net, i've been at this for hours, i'm loosing my pacience [:P] I've seen that this error has occured to a lot of people but their solutions haven't helped at all [:^)] Can someone please help me out
OracleCommand Object with stored procedure in Oracle 10.2 (ODP.Net)   (242 Views)
! i am using the oracle command with oracle database (v 10.2), the command object has some parameters, some of them are of type input and 2 of them are of type Out put. But when we execute the command the output parameter of the command object shows the null value. i do not know wot is the exact problem. here is the code Private Sub PrepareInTransitCommand(ByRef pCancelCompleteLog As DA.Common.CancelCompleteLog, _ ByRef pCommand As OracleCommand) With pCommand 'Attatches the Parameters .Parameters.Add(New OracleParameter("p_business_unit_id", OracleDbType.Varchar2, 2, ParameterDirection.Input)) .Parameters.Add(New OracleParameter("p_division_id", OracleDbType.Varchar2, 5, ParameterDirection.Input)) .Parameters.Add(New OracleParameter("p_last_receipt_date", OracleDbType.Date, 7, ParameterDirection.Input)) .Parameters.Add(New OracleParameter("p_comp_prcnt", OracleDbType.Single, ParameterDirection.Input)) .Parameters.Add(New OracleParameter("p_it_number", OracleDbType.Double, ParameterDirection.Input)) .Parameters.Add(New OracleParameter("p_cancel_complete_ind", OracleDbType.Varchar2, 1, ParameterDirection.Input)) .Parameters.Add(New OracleParameter("p_transaction_id", OracleDbType.Int64, ParameterDirection.Output)) .Parameters.Add(New OracleParameter("p_return_status", OracleDbType.Int64, ParameterDirection.Output)) .Parameters.Add(New OracleParameter("p_error_msg", OracleDbType.Varchar2, 2000, ParameterDirection.Output)) 'Sets Values .Parameters.Item("p_business_unit_id").Value = pCancelCompleteLog.BusinessUnitId .Parameters.Item("p_division_id").Value = pCancelCompleteLog.DivisionId End With End Sub ' Now Excecute command public sub Main () Call PrepareInTransitCommand(pCancelCompleteLog, lCmd) lCmd.ExecuteReader() ' Check the Return Value which works fine here If Not lCmd.Parameters.Item("p_return_status").Status = 0 Then 'Do Some thing End If but the Below parameter throws null, where as i checked the stored procedure which works fine. no problem in procedure lCmd.Parameters.Item("p_transaction_id") End Sub kindly tell me any body if some body have same issue in Oracle.
how to create tables in a specified tablespace   (203 Views)
hi i'm new to oracle 10g can any one tell me how to create tables in a specified tablespaces
Problem while inserting data via table adapter   (201 Views)
Hi all, I created an dataset as given in the tutorial "creating a data access layer" I created an Insert query but when I am trying to run the query it is inserting all null values in my table. Can any one help me regarding this InsertQuery = INSERT INTO link (Id, yearofcalendar, pdflink, wordlink) VALUES (Id, yearofcalendar, pdflink, wordlink) with paramenters id,yearofcalendar,pdflink and wordlink I created an insertquery with the tableadapter query configuration wizard and wrote the following code for inserting the query... Try Dim adap As New DetailsTableAdapters.DataTable1TableAdapter Dim insertstring As Details.DataTable1DataTable insertstring = adap.InsertQuery("2", "2008", "ramesh", "rathi") Catch ex As Exception MsgBox(ex.Message) End Try Many
Urgent -- How should i tackle this error   (283 Views)
I am trying to open a excel spread sheet from a particular location but i am getting this error System.Data.OleDb.OleDbException: The Microsoft Jet database engine cannot open the file ''. It is already opened exclusively by another user, or you need permission to view its data. How shoud i by pass it. this is my codelocation=Server.MapPath("pdf/client/"&strFilePath) location1=Server.MapPath("\\FiServ\pdf\client\"&strFilePath) ElseIf(FlPlanDetails.PostedFile.FileName.ToLower.EndsWith(".xls")OrFlPlanDetails.PostedFile.FileName.ToLower.EndsWith(".xlsx")OrFlPlanDetails.Value="")Then FlPlanDetails.PostedFile.SaveAs(location) DimexcelConnectionStringAsString="Provider=Microsoft.Jet.OLEDB.4.0;DataSource=location1;ExtendedProperties=Excel8.0" 'CreateConnectiontoExcelWorkbook UsingconnectionAsData.OleDb.OleDbConnection=NewData.OleDb.OleDbConnection(excelConnectionString) DimcommandAsData.OleDb.OleDbCommand=NewData.OleDb.OleDbCommand("SelectCusip,Fundnofeeclass,FundNamewfeeclass,FundDescriptionFROM[Sheet1$]",connection) connection.Open() 'CreateDbDataReadertoDataWorksheet UsingdrAsData.Common.DbDataReader=command.ExecuteReader() 'SQLServerConnectionString DimsqlConnectionStringAsString=System.Configuration.ConfigurationManager.AppSettings(APPSETTING_DBCONNECTION)'"DataSource=.; InitialCatalog=Test;IntegratedSecurity=True" 'BulkCopytoSQLServer UsingbulkCopyAsSqlBulkCopy=NewSqlBulkCopy(sqlConnectionString) bulkCopy.DestinationTableName="Fund" bulkCopy.WriteToServer(dr) EndUsing EndUsing connection.Close() EndUsing I am getting the error message at connection.Open().
Oracle unsupported datatype question   (419 Views)
Hi - Yesterday my queries were working fine, last night the DBA's added a new column without telling anyone - this new column is of a type ST_GEOMETRY This new additional column is killing my queries. Here is how its been implemented.... sqlQuery = "SELECT * FROM lrcreator.politicalbasins ORDER BY BASINNAME"; xx = cs.GetLandACQConnectionString(); DS = new DataSet(); OConn = new OracleConnection(xx); ODA = new OracleDataAdapter(sqlQuery, OConn); ODA.MissingSchemaAction = MissingSchemaAction.AddWithKey; ODA.Fill(DS, "ALL_BASINS"); OConn.Close(); The procedure fails on the ODA.Fill statement it fails with an Unsupported Datatype error does anyone know how to get around this error
Firebird and commit   (233 Views)
I have connected to Firebird over ODBC and have on WebForm GridView1 and SqlDataSource1 and enabled editing and delete-ing. also, I filled the UPDATE, INSERT and DELETE SQL statements. Problem is that data is not COMMITed to database. after clicing update etc. where or how to call SQL COMMIT command in ASP.NET2.0
ORA-12154: TNS:could not resolve service name   (389 Views)
all, I am very new to Oracle and I keep getting this error in .Net and I don't know why... I am using Oracle 8.1.7, C# andusing System.Data.OracleClient I selected OracleDataAdaptor from the toolbox and created a new connection and tested it and it was successful. I built my program and there are no errors but when the page loads I get the error mentioned in the subject heading. It says the error occurs at conn.Open(); Does anyone know how to go about and try to fix this error By the way here is that section of code: protected System.Data.OracleClient.OracleDataAdapter oracleDataAdapter1; protected System.Data.OracleClient.OracleCommand oracleSelectCommand1; // Selects all the columns in the db protected System.Data.OracleClient.OracleCommand oracleInsertCommand1; protected System.Data.OracleClient.OracleConnection conn; // Tested connection and it worked protected System.Web.UI.WebControls.ListBox nameListBox; private void Page_Load(object sender, System.EventArgs e) { using(conn) using(oracleSelectCommand1) { oracleSelectCommand1.Connection = conn; conn.Open(); OracleDataReader reader = oracleSelectCommand1.ExecuteReader(); while(reader.Read()) nameListBox.Items.Add(new ListItem(reader.GetString(0))); reader.Close(); }
Problems connecting to database using Web Matrix   (218 Views)
How do I connect to a Foxpro .dbf using the Simple Data Report in Web Matrix The following code works in Foxpro: STORE SQLCONNECT('vfpdbf', 'sa') TO gnConnHandle SELECT Firstname, Lastname, Address, City, State ; FROM 'CUSTOMERS' ; WHERE trim(upper(lastname)) = trim(upper('M'))
1 Dimensional Array   (248 Views)
I have tried to create an add entry form for a page made with (VB) and MYSQL. I have managed to get something working with edit / delete, but when I try and add an entry with this page I get the following error. CompilerErrorMessage:BC30311:Valueoftype'System.Data.Odbc.OdbcCommand'cannotbeconvertedto'1-dimensionalarrayofSystem.Data.Odbc.OdbcCommand'. SourceError: Line12: strInsert="InsertIntoservers_test(client_name,gateway,connection_type,hostname,server,login,password,connection_bis,market,software,node,description,comments,enable)"&_ Line13: "Values(@ClientName,@Gateway,@ConnectionType,@Hostname,@Server,@Login,@Password,@ConnectionBis,@Market,@Software,@Node,@Description,@Comments,@Enable)" Line14: cmdInsert=NewODBCCommand(strInsert,MyConn) Line15: cmdInsert.Parameters.Add("@ClientName",txtClientname.Text) Line16: cmdInsert.Parameters.Add("@Gateway",txtGateway.Text) Any idea's Here is the complete code: Sub Button_Click (obj As Object, e As EventArgs) Dim connectionString As String = "Driver={MySQL ODBC 3.51 Driver};SERVER=*;UID=*;PWD=*;DATABASE=*;" Dim MyConn As New OdbcConnection(connectionString) Dim strInsert As String Dim cmdInsert As OdbcCommand() strInsert = "Insert servers_test ( client_name, gateway, connection_type, hostname, server, login, password, connection_bis, market, software, node, description, comments, enable ) " & _ "Values ( @ClientName, @Gateway, @ConnectionType, @Hostname, @Server, @Login, @Password, @ConnectionBis, @Market, @Software, @Node, @Description, @Comments, @Enable )" cmdInsert = New ODBCCommand( strInsert, MyConn ) cmdInsert.Parameters.Add( "@ClientName", txtClientname.Text ) cmdInsert.Parameters.Add( "@Gateway", txtGateway.Text ) cmdInsert.Parameters.Add( "@ConnectionType", txtConnectionType.Text) cmdInsert.Parameters.Add( "@Hostname", txtHostname.Text ) cmdInsert.Parameters.Add( "@Server", txtServer.Text ) cmdInsert.Parameters.Add( "@Login", txtLogin.Text ) cmdInsert.Parameters.Add( "@Password", txtPassword.Text ) cmdInsert.Parameters.Add( "@ConnectionBis", txtConnectionbis.Text ) cmdInsert.Parameters.Add( "@Market", txtMarket.Text ) cmdInsert.Parameters.Add( "@Software", txtSoftware.Text ) cmdInsert.Parameters.Add( "@Node", txtNode.Text ) cmdInsert.Parameters.Add( "@Description", txtDescription.Text ) cmdInsert.Parameters.Add( "@Comments", txtComments.Text ) cmdInsert.Parameters.Add( "@Enable", txtEnable.Text ) MyConn.Open() cmdInsert.ExecuteNonQuery() MyConn.Close() End Sub Client Name Gateway Connection Type Hostname Server Login Password Connection Bis Market Software Node Environment Mode Description Comments Enable
Oracle 10g with MS ODP   (216 Views)
Just wondering if anyone has tried using Oracle 10g with MS ODP. Is it compatible
iskey = false when i use cmd.ExecuteReader(CommandBehavior.keyinfo) mysql myoledb provider   (283 Views)
************* Edited by moderator Adec *************** Inserted missing < code> tags. Always format your code and use tags when including code in your postings. Many readers disregard postings without the code tags. ************************************************** , I am trying to find the name of the keyfield of a table in mysql. (visual studio 2003 en iis5.0 en een web pagina i am using the myoledb provider versie 3.0 for mysql (not the bytefx because i want to keep all my oledb commands i wrote already) I use myreader = cmd.ExecuteReader(CommandBehavior.SchemaOnly Or CommandBehavior.KeyInfo) and show all info in a grid. I notice that de "iskey" property is always set to False (even of all the field , included the actual key field) I use Provider=MySqlProv.3.0 (Because it is a mysql database accessed through oledb) In de mysql console the field "ID" of the table is marked with the 'key' icon and even autoincrement is turned on .But it remains "iskey" = false What could be the problem Is there another way to find the name of the keyfield of a table
Re: Crystal Reports using Oracle   (279 Views)
i have been using oracle database for my program for development and everything (commands... connections...) works fine in my classes the problem is, when i try to create a crystal report using the wizard, the connection is valid and i can get the data to display on the rpt during development, but when i run it, the page returns me a error : Server Error in '/ium' Application. -------------------------------------------------------------------------------- Logon failed. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: CrystalDecisions.CrystalReports.Engine.LogOnException: Logon failed. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [LogOnException: Logon failed.] .F(String  , EngineExceptionErrorID  ) .A(Int16 , Int32 ) .@(Int16 ) CrystalDecisions.CrystalReports.Engine.FormatEngine.GetPage(PageRequestContext reqContext) CrystalDecisions.ReportSource.LocalReportSourceBase.GetPage(PageRequestContext pageReqContext) CrystalDecisions.Web.ReportAgent.u(Boolean N) CrystalDecisions.Web.CrystalReportViewer.OnPreRender(EventArgs e) System.Web.UI.Control.PreRenderRecursiveInternal() System.Web.UI.Control.PreRenderRecursiveInternal() System.Web.UI.Control.PreRenderRecursiveInternal() System.Web.UI.Page.ProcessRequestMain() -------------------------------------------------------------------------------- Version Information: Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573 in that page there's only 1 line binding the report source to the viewer: crystalreportviewer1.reportsource = ".\RoCryRpt1.rpt" any solutions
PL/SQL PROCEDURE using Cursor Loops and SINGLE PARAMETER   (232 Views)