SqlException Inserting NULL Into A Varbinary(MAX) Column.
Jul 12, 2007
I get the following error when my insert has a DBNull value for a column of type varbinary(MAX). "Implicit conversion from data type nvarchar to varbinary(max) is not allowed. Use the CONVERT function to run this query." In my opinion, the .NET SqlDataAdapter is attempting to convert the null value to a nvarchar. Is it possible to insert a null value in varbinary(max)? I didn't have this problem with the image datatype. Is this a bug or is there a work around to this problem?
Any help would be appreciated.
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Aug 18, 2007
I need to put .doc data into a varbinary column for full text searching. I have created the db and columns but am unsure as to how to insert the varbinary data. I have found some discussions about inserting images but nothing explicitly on .doc files. Can anyone suggest resources or sample code?
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Apr 20, 2008
Hello,
I'm working on a website that allows users to upload small JPEG files. I followed the article at http://aspnet.4guysfromrolla.com/articles/120606-1.aspx. On the webpage I'm using a formview control to insert new records in the database. As suggested in the article I removed the "type='object'" from the insert parameters for the image column. The data is saved by using a sqldatasource with stored procedures. The image column is of type varbinary(max) and allows null values. Everythings works fine as long as the user uploads an image. The data is saved correctly and on another page the image can be viewed. However if the user does not upload a picture and tries to save the new record the following error is thrown:
�Implicit conversion from data type nvarchar to varbinary(max) is not allowed. Use the CONVERT function to run this query.�
In the formviews iteminserting event I have the following code: Dim imageBytes(fileupload1.PostedFile.InputStream.Length) As Byte fileupload1.PostedFile.InputStream.Read(imageBytes, 0, imageBytes.Length) e.Values("Image") = imageBytes What code should I use in case the fileupload1 has no file? I tried something like: e.values("Image") = dbnull.value But that doesn't work. Any suggestions?
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Apr 21, 2008
Hello,
I'm trying to insert a string expression into a varbinary field. I've tried it several ways, but the data does not seem to get inserted.
I map DT_STR field ("T") with varbinary field in destination table and the package executes properly, but when I see the data that it has been loaded I only see empty values (0x).
I have also tried other approaches, like converting to DT_BYTES during SSIS flow, but I always get the same result.
Any idea of how to achieve this?
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Nov 12, 2007
Can a bitmap be added to a Varbinary field using the INSERT statement. If not what other method can I use to add a photo image (bmp or gif) to my Sql database?
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Jun 5, 2006
I'm trying to return all the rooms that are in a specific area being selected in a ComboBox and I don't want any rooms that have no MacNo. I would have thought this would do it but they Visual Studio throws me a SqlException "Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression."
String dbsql = "SELECT a.RoomID " +
" , a.Room " +
" FROM tblRdrRm a " +
" WHERE a.RoomID = (SELECT RoomID " +
" FROM tblRdrInfo r " +
" WHERE r.AreaID = '" + reaid + "' " +
" AND r.MacNo IS NOT NULL ) " +
" AND a.AreaID = '" + reaid + "' " +
" UNION " +
"SELECT b.RoomID " +
" , b.Room " +
" FROM tblRdrRm b " +
" WHERE b.AreaID = '" + reaid + "' " +
"";
Thanks
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Jul 13, 2006
Hi All,
I have a form (asp website with the default.aspx and default.aspx.cs) which I use to connect to the SQL Server 2005 database and insert, update,get and delete data to and from it. In the table I have a column called Picture to insert a photo (usually bmp files) which I declared as a varbinary(max). ID is the primary key and is an int (i tried it to be numeric & varchar).
I am trying to insert data into the table using a form with this syntax:
SqlConnection enter_conn = new SqlConnection("user id=;" +
"password=;server=servername;" +
"Trusted_Connection=yes;" +
"database=Member Profiles; " +
"connection timeout=30");
enter_conn.Open();
string insertSql = "Insert dbo.Details(ID,Last_Name,First_Name,Middle_Initial,Project, Organization,Manager,Current_Skills,Biography,Hobbies, Picture) Select 1001, 'ABC','XYZ','R',' Website Development','ACT',LKM','ASP.Net, C#.Net, SQL Server 2005, SharePoint, Java, ',' developing the new website for ACT using SharePoint and SQL Server 2005', ' Singing, Listening to Music, Dancing, Cooking, Swimming', BulkColumn from Openrowset( Bulk 'C:\photos\rose.bmp', Single_Blob) as Picture";
SqlCommand myCommand = new SqlCommand(insertSql, enter_conn);
int i = myCommand.ExecuteNonQuery();
I have no data in the table and am doing the first insert. Though the data gets inserted I am getting this exception:
System.Data.SqlClient.SqlException: Violation of PRIMARY KEY constraint 'PK_Details'. Cannot insert duplicate key in object 'dbo.Details'. The statement has been terminated. 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.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at _Default.Enter_Click(Object sender, EventArgs e) in c:Documents and SettingskrkondaXMy DocumentsVisual Studio 2005WebSitesMember ProfilesDefault.aspx.cs:line 82
Can someone please suggest anything???? I appreciate a quick response please!!!!
Thanks,
Kavya
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Jul 30, 2004
Hello,
I have a problem with my Update sql server command. The error message is strange :
System.Data.SqlClient.SqlException: Invalid column name 'CMD_DATE_ORDER'. Invalid column name 'CMD_REF_CLIENT'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior,
RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at ASP.addorder_aspx.MasterGrid_Update(Object Sender, DataGridCommandEventArgs E)
in C:Inetpubwwwrootproject1addorder.aspx:line 157
On line 157 I have :
UpdateCommand.ExecuteNonQuery()
The Update code :
Sub MasterGrid_Update(Sender As Object, E As DataGridCommandEventArgs)
' update the database with the new values
' get the edit text boxes
Dim dateCom As String = CType(e.Item.FindControl("dateCom"), TextBox).Text
Dim NumBon As String = CType(e.Item.FindControl("NumBon"), TextBox).Text
Dim NomDest As String = CType(e.Item.FindControl("NomDest"), TextBox).Text
Dim NovoieDest As String = CType(e.Item.FindControl("NovoieDest"), TextBox).Text
Dim nomvoieDest As String = CType(e.Item.FindControl("nomvoieDest"), TextBox).Text
Dim cpDest As String = CType(e.Item.FindControl("cpDest"), TextBox).Text
Dim villeDest As String = CType(e.Item.FindControl("villeDest"), TextBox).Text
Dim paysDest As String = CType(e.Item.FindControl("paysDest"), TextBox).Text
Dim telDest As String = CType(e.Item.FindControl("telDest"), TextBox).Text
Dim dateExp As String = CType(e.Item.FindControl("dateExp"), TextBox).Text
Dim myConnection As New SqlConnection(strConnect)
Dim UpdateCommand As SqlCommand = new SqlCommand()
UpdateCommand.Connection = myConnection
' Add to CLIID_LGN the selected value in the DropDownList
Dim cliid As String
cliid = Trim(DDL.SelectedItem.Value)
If AddingNew = True Then
UpdateCommand.CommandText = "INSERT INTO Commandes (CMD_DATE_ORDER, CMD_NUM_BON_ORDER, CMD_NOM_DEST, CMD_NOVOIE_DEST, CMD_NOMVOIE_DEST, CMD_CP_DEST, CMD_VILLE_DEST, CMD_PAYS_DEST, CMD_TEL_DEST,
CMD_DATE_EXPED, CMD_REF_CLIENT) VALUES ('" & dateCom & "','" & NumBon & "','" & NomDest & "','" & NovoieDest & "','" & nomvoieDest & "','" & cpDest & "','" & villeDest & "','" & paysDest & "','" & telDest & "',
'" & dateExp & "', '" & cliid & "')"
Else
UpdateCommand.CommandText = "UPDATE Client SET CMD_DATE_ORDER=@dateCom, CMD_NUM_BON_ORDER = @NumBon, CMD_NOM_DEST = @NomDest, CMD_NOVOIE_DEST = @NovoieDest, CMD_NOMVOIE_DEST = @NomvoieDest,
CMD_CP_DEST = @cpDest, CMD_VILLE_DEST = @villeDest, CMD_PAYS_DEST = @paysDest, CMD_TEL_DEST = @telDest, CMD_DATE_EXPED = @dateExp WHERE CMD_REF_CLIENT = '" & cliid & "'"
End If
UpdateCommand.Parameters.Add("@dateCom", SqldbType.SmallDateTime, 4).Value = Trim(dateCom)
UpdateCommand.Parameters.Add("@NumBon", SqldbType.NVarChar, 10).Value = Trim(NumBon)
UpdateCommand.Parameters.Add("@NomDest", SqldbType.NVarChar, 50).Value = Trim(NomDest)
UpdateCommand.Parameters.Add("@NovoieDest", SqldbType.NVarChar, 5).Value = Trim(NovoieDest)
UpdateCommand.Parameters.Add("@nomvoieDest", SqldbType.NVarChar, 80).Value = Trim(nomvoieDest)
UpdateCommand.Parameters.Add("@cpDest", SqldbType.NVarChar, 5).Value = Trim(cpDest)
UpdateCommand.Parameters.Add("@villeDest", SqldbType.NVarChar, 35).Value = Trim(villeDest)
UpdateCommand.Parameters.Add("@paysDest", SqldbType.NVarChar, 35).Value = Trim(paysDest)
UpdateCommand.Parameters.Add("@telDest", SqldbType.NVarChar, 14).Value = Trim(telDest)
UpdateCommand.Parameters.Add("@dateExp", SqldbType.SmallDateTime, 4).Value = Trim(dateExp)
' execute the command
Try
myConnection.Open()
UpdateCommand.ExecuteNonQuery()
Catch ex as Exception
Message.Text = ex.ToString()
Finally
myConnection.Close()
End Try
' Resort the grid for new records
If AddingNew = True Then
MasterGrid.CurrentPageIndex = 0
AddingNew = false
End If
' rebind the grid
MasterGrid.EditItemIndex = -1
BindMasterGrid()
End Sub
I have send a response.write instruction : the values are all good.
In the sql server database, the syntax of this 2 fields CMD_DATE_ORDER and CMD_REF_CLIENT are good.
Can you help me for this problem ?
Thanks.
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Nov 4, 2003
ASP.NET application, MS SQL DB, and a table with a timestamp(8) column.
Error:
Cannot insert a non-null value into a timestamp column. Use INSERT with a column list or with a default of NULL for the timestamp column.
I'm using an SQLDataAdapter and typed DataSet, inserting a row into the dataset, and calling Update() to send changes to the DB.
The thing that baffles me about receiving this error, is that the DB column can be null and I get this error wheter I attempt to insert NULL or a valid byte array into the column.
(No - I am not trying to insert a datetime into the column.)
The error just doesn't seem too descriptive of the problem I'm having, and I'm quite confused.
All help greatly appreciated!
Slezak
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May 5, 2008
what is the best way of comparing image/varbinary and nullable column in sql server?
this is what i do to find out the different in image column in 2 tables sharing the same structure:
Select *
From TblA s
Left Join TblB c On
s.Id = c.Id And Coalesce(Convert(VARBINARY(MAX), c.Image),'') <> Coalesce(Convert(VARBINARY(MAX), s.Image),'')
Where c.Id IS NULL
alternatively, i was thinking to compare the column with the size, but worry about the accuracy:
Select *
From TblA s
Left Join TblB c On
s.Id = c.Id And ISNULL(Datalength(c.Image),0) <> ISNULL(Datalength(s.Image),0) Where c.Id IS NULL
any suggestion/advise will be appreciated ~
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Nov 17, 2006
Hi,
I have a table with one of its column VARBINARY(MAX).
I want to make sure that the values in this VARBINARY(MAX) column is unique.
SQL Server doesn;t allow to create Unique Constraint over VARBINARY fields - whats the best workaround for ensuring uniqueness on VARBINARY columns.
Thanks,
Loonysan
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Feb 3, 2007
I have a password column that needs to be converted from varchar to varbinary. Can anybody provide me a proper CONVERT statement syntax for it?
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Nov 4, 2015
Is there a way to encrypt 'varbinary' column data?
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Jul 10, 2007
Hi, I was wondering if any SQL Server gurus out there could help me...I
have a table which contains text resources for my application. The text
resources are multi-lingual so I've read that if I add a html language
indicator meta tag e.g.<META NAME="MS.LOCALE" CONTENT="ES">and
store the text in a varbinary column with a supporting Document Type
column containing ".html" of varchar(5) then the full text index
service should be intelligent about the language word breakers it
applies when indexing the text. (I hope this is correct technique for
best multi-lingual support in a single table?)However, when I come to query this data the results always return 0 rows (no errors are encountered). e.g.DECLARE @SearchWord nvarchar(256)SET @SearchWord = 'search' -- Yes, this word is definitely present in my resources.SELECT * FROM Resource WHERE CONTAINS(Document, @SearchWord)I'm a little puzzled as Full Text search is working fine on another table that employs an nvarchar column.Any pointers / suggestions would be greatly appreciated. Cheers,Gavin.
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May 20, 2015
I have a table in one of my databases that stores files in one of its columns. I need to be able to export this BLOB column into either a CSV or Excel file. I am forbidden from using xp_Cmdshell so I was wondering if there was a way to do this in the Cmd prompt.
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Jul 10, 2007
Hi, I was wondering if any SQL Server gurus out there could help me...
I have a table which contains text resources for my application. The text resources are multi-lingual so I've read that if I add a html language indicator meta tag e.g.
<META NAME="MS.LOCALE" CONTENT="ES">
and store the text in a varbinary column with a supporting Document Type column containing ".html" of varchar(5) then the full text index service should be intelligent about the language word breakers it applies when indexing the text. (I hope this is correct technique for best multi-lingual support in a single table?)
However, when I come to query this data the results always return 0 rows (no errors are encountered). e.g.
DECLARE @SearchWord nvarchar(256)
SET @SearchWord = 'search' -- Yes, this word is definitely present in my resources.
SELECT * FROM Resource WHERE CONTAINS(Document, @SearchWord)
I'm a little puzzled as Full Text search is working fine on another table that employs an nvarchar column.
Any pointers / suggestions would be greatly appreciated. Cheers,
Gavin.
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Dec 5, 2003
Hello,
I have got a database with a datetime field. I insert a date into the database from a textbox. All is fine if someone enters a date. If someone enters nothing I want a null to be inserted. How do I do this?
Grant
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Oct 13, 2005
how do you write an insert into statement and keep “<NULL>” in the null cells?
i was trying something like this BUT when you try to write an IS NULL statement it doesnt work.
ISNULL(dbo.TRUNK02_LastVersion_PayableClaims_01.MO D1, NULL) AS Mod1,
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Sep 19, 2005
Is there a way, I can insert NULL value to "DT_Date" type Row Column using Script Component Transformation of Data flow?
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Sep 8, 2007
I am simply trying to use SQLCommand in .net to insert a record into a SQL Server 2005 table. There are 2 fields being pulled from a user input for that could have no values selected. In this case I want to insert a null value into the record. I get an error that Null is no longer supported and that I should use System.DBNull, but that can't be used as an expression.
How do I do this?
Thank you in advance.
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May 11, 2004
Hi,
I am trying to insert null values into sql server from my access from. I am using sql statement. But it says 'Syntex error in Insert statement'. When i remove null values it works fine? How can I insert null values into a table?
Any help will be highly appreciated.
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Jul 1, 2006
Folks, this isn't exactly a 'Getting Started' question, but I couldn't find a more appropriate Application Development forum.
I'm porting an open source PHP application (http://sourceforge.net/projects/gallery) to use SQL Server as a backend. One of Gallery's unit test scripts tests the ability to insert a string containing a NULL character ( ). It's OK if the string is truncated during insertion, just so long as everything before the is there.
The string being inserted looks like:
$testString = "The NULL character should be escaped !";
(Note the between "escaped " and " !")
The error that the Gallery test script is getting is:
[Microsoft][ODBC SQL Server Driver][SQL Server]Incorrect syntax near 'The NULL character should be escaped '.] in EXECUTE("INSERT INTO g2_PluginParameterMap (g_pluginType, g_pluginId, g_itemId, g_parameterName, g_parameterValue) VALUES ('module','unitTestModule',1,'test19476','The NULL character should be escaped !')")
It looks like SQL Server is complaining about the syntax. I've written a much simpler test script in the hopes of reproducing the problem, but I don't know if what I'm now hitting is the same problem or a different one.
My simple script is:
<?php
$localhost = exec("hostname");
$database = "gallery2";
$uid = "g2user";
$pwd = "g2pwd";
$connectString = "Host=PROVIDER=MSDASQL;DRIVER={SQL Server};";
$connectString .= "SERVER=$localhost\sqlexpress;";
$connectString .= "DATABASE=$database;";
$connectString .= "UID=$uid;PWD=$pwd";
$sqlTableDrop = "drop table ljmtemp";
$sqlTableCreate = "create table ljmtemp (col1 nvarchar(100))";
$sqlTableQuery = "select len(col1) from ljmtemp";
// Connect to the db
$db = new COM("ADODB.Connection") or die("Cannot start ADO");
$db->open($connectString);
// Drop & recreate the table
$db->Execute ($sqlTableDrop);
$db->Execute ($sqlTableCreate);
// Insert the test data
//$testString = "The NULL character should be escaped !";
$testString = "This is a test string.";
$res = $db->Execute("insert into ljmtemp (col1) values ('$testString')");
if (!$res) die ("INSERT failed");
// Disconnect from the db
$db->Close();
?>
And it results in:
C:MyServer>php testMsSqlInsertNull.php
PHP Fatal error: Uncaught exception 'com_exception' with message 'Source: Microsoft OLE DB Provider for ODBC Drivers
Description: [Microsoft][ODBC SQL Server Driver][SQL Server]Unclosed quotation mark after the character string 'The NULL character should be escaped '.' in C:MyServer estMsSqlInsertNull.php:27
Stack trace:
#0 C:MyServer estMsSqlInsertNull.php(27): com->Execute('insert into ljm...')
#1 {main}
thrown in C:MyServer estMsSqlInsertNull.php on line 27
I'm not sure if this is the same problem as Gallery is reporting or another one.
It looks like somebody is treating the as a string terminator, but when i double the backslash the literal '