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]...
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:
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?
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.
I have a bit of code in a clickevent handler like this:-
Dim products = From p In db.Products where p.product_name = "Tool" Select New With {p.Product_ID,p.Product_name}
Gridview1.Datasource = products
GridView1.Databind()
But causes error=SQL Server does not handle comparison of NText, Text, Xml, or Image data types?
where product_name field is set as type text
I have a linq to sql query where I have to perform union two set of records.
And I do not have equal number of fields, so added the null
eg my psuedo code is
[code]....
after googling some hours I came to understand that it is bug in 3.5 framework.
Now I want to retrieve the result.
How do I do thatI tried framing into two seperate iqueryable
var a= first query
var b =second query
ilist result =a.union b
This too results in the same error.
I see two means of working with session data in ASP.NET MVC:
System.Web.SessionState.HttpSessionState, available on HttpApplication
System.Web.HttpSessionStateBase, available on Controller
Data stored in one seems to be available in the other. Unfortunately the only common ancestor of these two types is System.Object, meaning that I can't create reusable utility code for the abstraction of either.Why is the API this way? Is there an important difference between the two that I am missing?
when I edit varchar field and save it to Sql Server, edited non-english text look as ??? symbols.I tried to correct this as
in web.config:
<globalization
fileEncoding="windows-1251"
[code]...
I have a website having an aunthentication system. When I am setting my website on IIS 6 the code is absolutly working fine. But when i configure the website on IIS 7 (Windows 2008 server) it is showing me the above error. I am using a stored procedure for it
View 3 Replies Im creating a Report to see all I have sold to a Client, my SQL query looks like this
[Code]....
What I dont want is to get a list of repeted items, I want to sum all items that are equal. for exemple:
Current Situation:
[Code]....
What I want to acomplish
[Code]....
i am looking for a solution using IN-Operator with LINQ TO SQL. I have found many examples after searching but no exemple which is using a Textbox.In my Textbox i put my ids 2,4,6,7,9 and after clicking the button, it have to show me my Records. But it does not.The error-message shwos me a wrong format.Ausnahmedetails: System.FormatException: Die Eingabezeichenfolge hat das falsche Format.
Zeile 5: Dim result As String = ""
Zeile 6: Dim intText As String = Me.tbKursid.Text
>>>>>>>> Zeile 7: Dim myText() As Integer = {Convert.ToInt32(intText)}
Zeile 8: Dim db As New seminarDataContext
Zeile 9: Dim daten = From c In db.vSchluessel _
If i use Dim myText() As Integer = {1,4,5,6} then it runs without problems. What is wrong?
[Code]....
I spent an hour googling and trying. No success. I want to get the digits behind the dot or comma for my calulcated column:
[code]...
But it just shows me a 0 and no other digits.
I am using VS 2008.I am building a datatable of records to be inserted into a SQL Server 2005 table.
The program loops through this table and builds a SqlParameter for each DataColumn in the datatable. The SqlParameters are used in the SQL Insert statement.
The field I am having a problem with is of type 'bit' in the database table and has no default value and cannot be nulls. The field is called 'Active' The meaning of this field in the application is Boolean i.e True or False. When inserting the record, I wish to default the field to "False".
When I define the columns in the datatable I am forced to use the following code to build the datatcolumn containing the boolean field i.e. dtcActive.DataType = GetType(Boolean) as there is no GetType(Bit)
Dim dtcActive As New DataColumn("Active")
dtcActive.DataType = GetType(Boolean)
dtcActive.Unique = False
dtcActive.AllowDBNull = False
dtcActive.DefaultValue = False
dtProviderDayDetails.Columns.Add(dtcActive)
However, when I build the SqlParameter I am forced to use this:
If field.ColumnName = "Active" Then
prm.SqlDbType = SqlDbType.Bit
prm.Value = "False"
End If
This is because there is no SqlDbType.Boolean. The problem I have is there is no value I have been able to give the SqlParameter that is accepted by the Insert statement. It complains that the boolean field cannot be null on Insert.
I want to retrieve all the records where the datetime is greater than or equal to 30 days ago. What is the correct formatting for this line: WHERE Property.dateadded >= NOW -30 days .. Dateadded field is in datetime format.
SELECT TOP (1) Property.Name, Property.Price, Department.DepartmentTitle, Images.ImageId, Property.DateAdded
FROM Property LEFT OUTER JOIN
Department ON Property.DepartmentId = Department.DepartmentId LEFT OUTER JOIN
Images ON Property.PropertyId = Images.PropertyId
WHERE Property.dateadded >= NOW -30 days
Im developing a web application in asp.net where i have gridview with some text box controls in it.In runtime we are creating a new row dynamically by clicking add button .To insert data into the database.i used a stringbuilder instead of string becoz the data what i have to insert into database is more.but i am gettin the following error No mapping exists from object type System.Text.StringBuilder to a known managed provider native type. in database the datafield column datatype is varchar(max).
View 3 RepliesI want to use three language: English, German and italian. If i will use varchar type, will i face any problem or I have to use nVarchar.
View 3 RepliesI have a little problem developing a SQL Select Statement on a column that is formatted pretty badly. Firstly, the Database has already been created and filled with Data in a Test Environment, I'm not sure if the format is the same or has been updated in Production but since I'm only able to work with the Test Environment right now I'm stuck with using what I have. The Column in one Table shows a Snapshot of a clients account which is set to VarChar(50) but the actual data in the column is formatted like a money format (with a $ and decimal point so for example "$5,000.00" would be an entry in one Row).
What I'm trying to do is a create a WebService that will be used in a iPhone Application and one of the Methods needs to just give a quick display of the total value of all Clients with each specific company but I can't perform a SUM function on a VarChar column and I've tried to CAST and CONVERT the column into money, int, decimal and just about every format I can think of but I keep getting an error stating that I convert the data type varchar to which ever one I'm trying. I think it has something to do with the $ already listed in the Column, so I wanted to know what I could do to either remove the $ sign (like a Trim option) or if there is a better way of doing this that I can't think of. I know the best option would be to convert the column to the appropriate format but as I said, this was a previously designed system and I'm not sure if the Production area is the same (most likely not).
Here's what I've tried so far:
[Code]....
What are the basic difference between the char and varchar datatype ?
View 5 Repliesi want to convert all my database columns whose data type is char,varchar, nchar to nvarchar datatype. But the main problem is that some of my primary key, foreign key columns are also of varchar datatype. So when i try to change their datatypes to nvarchar then i receive the errors related to constraints of Primary Key, Unique Key and indexes. how to change the datatypes to nvarchar after droping the constraints and after changing all constraints will apply again. I also want that no data loss will occur.
View 5 RepliesI have a insert into statement thats inserting my numbers from a numeric text box on my aspx page. I am choosing the Amount Type then putting in a a number.
So i have a drop down that i select example Direct Charge then i enter 600.00 and click add it puts that in to the databse for me woot..
I then put in say Misc Credit and enter 200.00 it inserts in that into the database woot.
The look up table that has my amount types has a field called numeric opperator which is either + or - the Credit being a - and the Charge being a + then my stored procedure takes all my + numbers and adds them up and subtracts all the - numbers.
I want to change that so that it actuall be inserted into the table as a - number form the start. So I want choose Misc Credit enter 200.00 and click add then my event says o yea thats a credit insert 200.00 as -200.00
How can I do that?
[code]...
I am using:
href='<%# Eval("Directory")+eval("Agenda")%>
to provide a link to documents held in directory so directory contains [URL] or [URL] Agenda contains
00209-FebruaryMtgMin%5E_.pdf
If I declare Directory as VarChar(nnn) where nnn is large enough to accomodate the longer field, The statement <%# Eval("Directory")+eval("Agenda")%> returns
[URL]self.aspx/.Public/ 00209-FebruaryMtgMin%5E_.pdf
How can I get rid of the Pad characters?
In my database im storeing date as varchar. Now i want to display the table in grid view sorted by date.So how to convert varchar to datetime.
Im trying the following querry but its not working.
SELECT
[Name],
convert(datetime
,103,[sdate]),
[place], [country],
FROM [table]
I'm using Visual Studio 2008 Query Builder and am trying to pass a value to a parameter that uses the IN OPERATOR.Here is my sql from qb:
SELECT COURSE_TITLE, INSTR_NAME, ADMIN_UNIT
FROM vwHRIC_EC_ContractSummary
WHERE (ADMIN_UNIT IN (@ADMIN_UNIT))
The trouble I am having is that if the parameter @ADMIN_UNIT contains more than one value such as (8X, CV) that the query doesn't return any data. If I run the same query with only one value such as (8X) it works fine.I have tried different formats like (8X, CV), ('8X', 'CV'), (8X; CV) but none have worked.I ran this same query in SQL Server Management Studio and and it returns data no problem but can't get it to work in Query Builder for my aspx application.Does anyone have any experience with this problem and how did you correct it?
I have an output parameter called '@packIds', that I create in ADO.Net using the code below:
SqlParameter packIdPara = new SqlParameter("@packIds", null);
packIdPara.SqlDbType = SqlDbType.VarChar;
packIdPara.Direction = ParameterDirection.Output;
sqlCmd.Parameters.Add(packIdPara);
How will I specify that the parameter '@packIds' is of max size? I cannot find any code for this.
[Code]....
I save dates as a string in a varchar data field named "TilDato" in a SQLServer-express table. I want to filter the records smaller than a specific date from a variable in the script. I try the following statement, but it does not seems function logically.
objCmd = new
SqlCommand("SELECT * FROM Reservering WHERE @laanedato<=TilDato",myConn2);
objCmd.Parameters.Add("@laanedato", laanedato);
objRdr = objCmd.ExecuteReader();