ADO.NET :: Getting Error - The Data Types Text And Varchar Are Incompatible In The Equal To Operator?
Nov 10, 2010
So admitingly I am fairly new at .NET...I have been a PHP guy for rather long time...
Heres my code:
[code]....
Essentially what I am trying to do is query the SQL database by the username. This above code is a method within the user respository for fetching a user by their username. The variable "username" is passed in as a string.
When the method is called a recieve the following error:
The data types text and varchar are incompatible in the equal to operator.
This to me is rather confusing since the field in the database, user_username, is a text and the variable passed in, as said, is a string. They should be synonomous for all practical purposes.
Ideas? Thoughts? Fixes?
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Similar Messages:
Dec 4, 2010
Here is the code:
Code:
Dim intusercount As Integer = 0
Using connection As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True")
Using command As New SqlCommand("SELECT [ID] FROM [Members] WHERE [Username]=@Username AND [Password]=@Password", connection)
command.Parameters.Add("@Username", Data.SqlDbType.VarChar).Value = TextBox1.Text
command.Parameters.Add("@Password", Data.SqlDbType.VarChar).Value = TextBox2.Text
connection.Open()
intusercount = command.ExecuteScalar
connection.Close()
If intusercount > 0 Then
MsgBox("Good")
Else
MsgBox("Bad")
End If
End Using
End Using
Error:
The data types text and varchar are incompatible in the equal to operator.
Source Error:
Quote:
Line 11: command.Parameters.Add("@Password", Data.SqlDbType.VarChar).Value = TextBox2.Text
Line 12: connection.Open()
Line 13: intusercount = command.ExecuteScalar
Line 14: connection.Close()
Line 15: If intusercount > 0 Then
Stack:
Code:
[SqlException (0x80131904): The data types text and varchar are incompatible in the equal to operator.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +2030802
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +5009584
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() +234
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +2275
System.Data.SqlClient.SqlDataReader.ConsumeMetaData() +33
System.Data.SqlClient.SqlDataReader.get_MetaData() +86
System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +311
System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) +987
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) +162
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +32
System.Data.SqlClient.SqlCommand.ExecuteScalar() +139
_Default.Button1_Click(Object sender, EventArgs e) in C:UsersUserDocumentsVisual Studio 2010WebSitesWebSite13Default.aspx.vb:13
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563
Database:
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Jul 4, 2010
I get the following error: The data types text and varchar are incompatible in the equal to operator.here's my code (PageName is a string Parameter) :
SqlConnection sql = SQLconnection();
en();
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "Select title, text, postdate, sticky from articles where pagename = @pagename;";
[code]...
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Mar 16, 2011
I've found a lot of similar topics but none of them solves my problem.
I have table structure like that
[Code]....
Everyone suggests to change ntext type to nvarchar(MAX) and life will be beautyfull. But... First, I need
ntext, simply because there should be text in this field.
nvarchar(MAX) equals 4096 bytes which is to small for large text. Second, I already have table with
ntext field, which does not cause this error.
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[code]....
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How do I do thatI tried framing into two seperate iqueryable
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var b =second query
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[Code]....
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{
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{
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[code]....
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Error Type:
Microsoft OLE DB Provider for ODBC Drivers (0x80040E14) [Microsoft][ODBC Microsoft Access Driver] Syntax error (missing operator) in query expression 'id='. /bioskop/pesan.asp, line 13
[Code]....
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[code]....
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[code]...
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As I am learning asp.net . when i try to insert record into msaccess table why it says -
Syntax error (missing operator) in query expression 'user1','cx0437@gmail.com' ,'12312456')'.
As i found the same code at the following link [URL] ....
Code:
protected void Button1_Click(object sender, EventArgs e) {
OleDbConnection con;
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using (con = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;" + @"DATA SOURCE=C:Database iershop.mdb")) {
con.Open();
[Code] ....
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[ ] [ ] [ ]
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List<DiscoveryInfo> lstDiscoveries = objDiscoverys.GetDiscoverys(ModuleId);[code]....
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