NULL Column
Sep 9, 1998I want to modify this column:
codkey int NULL
to:
codkey int NOT NULL
How can I do that in SQL Server?
I think it must be very simple
I want to modify this column:
codkey int NULL
to:
codkey int NOT NULL
How can I do that in SQL Server?
I think it must be very simple
I am getting this error: "Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails." -- But my value is not null. I did a response.write on it and it show the value. Of course, it would be nice if I could do a breakpoint but that doesn't seem to be working. I'll attach a couple of images below of my code, the error, and the breakpoint error.
Server Error in '/' Application.
Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.
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: System.Data.SqlClient.SqlException: Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.Source Error:
Line 89: sContact.Phone = sPhone.Text.Trim
Line 90: sContact.Email = sEmail.Text.Trim
Line 91: sContact.Save()
Line 92:
Line 93: Dim bContact As Contact = New Contact()Source File: F:InetpubwwwrootOutman KnifeCheckout.aspx.vb Line: 91 Stack Trace:
[SqlException (0x80131904): Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +857354
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +734966
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1838
System.Data.SqlClient.SqlDataReader.HasMoreRows() +150
System.Data.SqlClient.SqlDataReader.ReadInternal(Boolean setTimeout) +214
System.Data.SqlClient.SqlDataReader.Read() +9
System.Data.SqlClient.SqlCommand.CompleteExecuteScalar(SqlDataReader ds, Boolean returnSqlValue) +39
System.Data.SqlClient.SqlCommand.ExecuteScalar() +148
SubSonic.SqlDataProvider.ExecuteScalar(QueryCommand qry) +209
SubSonic.DataService.ExecuteScalar(QueryCommand cmd) +37
SubSonic.ActiveRecord`1.Save(String userName) +120
SubSonic.ActiveRecord`1.Save() +31
Checkout.btnCheckout_Click(Object sender, EventArgs e) in F:InetpubwwwrootOutman KnifeCheckout.aspx.vb:91
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102
Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
It's giving me an error while I'm trying to change column value from not null to null..
'tblid' table
- Unable to modify table. Â
Cannot insert the value NULL into column 'ValidID', table 'Xe01.dbo.Tmp_tblid'; column does not allow nulls. INSERT fails.
The statement has been terminated.
Dear folks,
please tell me the query for altering a column from not null to null
Vinod
Hi all,
One of my columns is the table has some Null values, and I Would like to stop having NULL values into that column any more.
I know, If I alter the column to NOT NULL will throw me an error, since it does a batch update.
Is there any way to achieve this...
Thanks...
Hi all,
One of my columns is the table has some Null values, and I Would like to stop having NULL values into that column any more.
I know, If I alter the column to NOT NULL will throw me an error, since it does a batch update.
Is there any way to achieve this...
Thanks...
We have a database where many tables have a field that has to be lengthened. In some cases this is a primary key or part of a primary key. The table in question is:-
/****** Object: Table [dbo].[DTb_HWSQueueMonthEnd] Script Date: 09/25/2014 14:05:09 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[DTb_HWSQueueMonthEnd](
[Code] ....
The script I am using is
DECLARE@Column varchar(100)--The name of the column to change
DECLARE@size varchar(5)--The new size of the column
DECLARE @TSQL varchar(255)--Contains the code to be executed
DECLARE @Object varchar(50)--Holds the name of the table
DECLARE @dropc varchar(255)-- Drop constraint script
[Code] ....
When I the the script I get the error message Could not create constraint. See previous errors.
Looking at the strings I build
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] DROP CONSTRAINT PK_DTb_HWSQueueMonthEnd
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] Alter Column [Patient System Number] varchar(10)
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] ADD CONSTRAINT PK_DTb_HWSQueueMonthEnd PRIMARY KEY NONCLUSTERED ([Patient System Number] ASC,[Episode Number] ASC,[CensusDate] ASC)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
They all seem fine except the last one which returns the error
Msg 8111, Level 16, State 1, Line 1
Cannot define PRIMARY KEY constraint on nullable column in table 'DTb_HWSQueueMonthEnd'.
Msg 1750, Level 16, State 0, Line 1
Could not create constraint. See previous errors.
None of the fields I try to create the key on are nullable.
I receive this message when I try to run any report. The reportserver and reportservertempdb databases were upgraded using backup/restore from SQL2000 to SQL2005 on a separate server which is running RS2005 . Please help. Thanks
View 1 Replies View RelatedI have an SSIS package that imports data from an Excel file, replaces any value in Excel that reads "NULL" to "", then writes the data to a couple of databases.
What I have discovered today, is I have two columns of dates, an admit date and discharge date column, and what I need to do is anywhere I have a null value in the discharge date column, I have to replace it with the value in the admit date column.Â
I have searched around online and tried a few things using the Replace funtion in Derived columns but no dice so far.Â
Hi.I've read up on this, and have something that works, but I was wondering ifthere is anything I'm overlooking with this.Situation is:I have a bunch of tables.. I need to modify table2 as part of an upgrade of adatabase schema.I am using T-SQL scripts to do the trick which I'm writing myself.I need to add a new varchar(8) column that is not null to the primary key.I have a default I would like to use for the initial ddl modification.I want to get rid of the default after the modification is complete, but leavethe column not null for future operations...(Some if the code I'm using I took from one of Erlands posts.. hope I'm notabusing it).Here is the code I'm using now.. it basically adds the column 'institution_id'as not null along with a default.Then I jump through a couple of hoops trying to get rid of the default.Finally I setup the primary key again.I can only feel I'm supposed to be maybe using a constraint column with a nameto do this easier/more properly.set @dynamicsql = ' alter table institution_xref add institution_idvarchar(60) not null default ''' + @default_institution_id + ''' 'EXEC (@dynamicsql)set @dynamicsql = ' alter table institution_xref alter columninstitution_id varchar(60) not null 'EXEC (@dynamicsql)select @institution_iddefault = object_name(cdefault) from syscolumnswhere id = object_id('institution_xref') and name = 'institution_id'exec(' alter table institution_xref drop constraint ' +@institution_iddefault)set @dynamicsql = ' alter table institution_xref drop constraintinstitution_xref_pk 'EXEC (@dynamicsql)set @dynamicsql = ' alter table institution_xref with nocheck addconstraint institution_xref_pk primary key clustered (originalcode,institution_id) 'EXEC (@dynamicsql)thanksJeffJeff Kish
View 2 Replies View Related
Hi,
I have a question whether set the default of column to null or non-null value as it is not easy to make a WHERE clause if the column is nullable.
Any suggestion?
It is issues like this that drive a programmer insane! I am trying to figure out if I am missing something here.
I have a query like this:
SELECT CL.DivisionId FROM CompanyLabels CL, BusinessRules B WHERE CL.CompanyLabelId = B.CompanyLabelId
In my table, DivisionId is nullable and equal to NULL.
In my VS.2005 Mobile 5 application, this line is giving me fits:
if (dr["DivisionId"] != null) { MessageBox.Show(dr["DivisionId"].ToString().Length.ToString()); divisionId = Convert.ToInt32(dr["DivisionId"].ToString()); }
DivisionId passes the null check and is blank. The message box returns "0" and of course, I get a FormatError on the conversion.
I have also tried DBNull in place of null. Is there a special System.Data.SqlServerCe NULL value in the SQL CE framework that I should be using? Am I completely forgetting something here?
Thanks!
Michael
Hey. I need to substitute a value from a table if the input var is null. This is fine if the value coming from table is not null. But, it the table value is also null, it doesn't work. The problem I'm getting is in the isnull line which is in Dark green color because @inFileVersion is set to null explicitly and when the isnull function evaluates, value returned from DR.FileVersion is also null which is correct. I want the null=null to return true which is why i set ansi_nulls off. But it doesn't return anything. And the select statement should return something but in my case it returns null. If I comment the isnull statements in the where clause, everything works fine. Please tell me what am I doing wrong. Is it possible to do this without setting the ansi_nulls to off??? Thank you
set ansi_nulls off
go
declare
@inFileName VARCHAR (100),
@inFileSize INT,
@Id int,
@inlanguageid INT,
@inFileVersion VARCHAR (100),
@ExeState int
set @inFileName = 'A0006337.EXE'
set @inFileSize = 28796
set @Id= 1
set @inlanguageid =null
set @inFileVersion =NULL
set @ExeState =0
select Dr.StateID from table1 dR
where
DR.[FileName] = @inFileName
AND DR.FileSize =@inFileSize
AND DR.FileVersion = isnull(@inFileVersion,DR.FileVersion)
AND DR.languageid = isnull(@inlanguageid,null)
AND DR.[ID]= @ID
)
go
set ansi_nulls on
I am trying to create a drop down list with the possible usernames that you can send an email to.  Everything works fine except for the dropdown list and I get the following error message:Cannot insert the value NULL into column 'EmailTo', table 'db191165913.dbo191165913.Email'; column does not allow nulls. INSERT fails.The statement has been terminatedMy code is below:<%@ Page Language="VB" MasterPageFile="~/real_world/realworld_MasterPage.master" AutoEventWireup="false" CodeFile="send_messages.aspx.vb" Inherits="send_messages" title="Untitled Page" %><asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <asp:Label ID="email_label" runat="server" Visible="False"></asp:Label> <asp:SqlDataSource ID="emailsend_source" runat="server" ConnectionString="<%$ ConnectionStrings:IMS_DB %>" DeleteCommand="DELETE FROM WHERE [EmailID] = @EmailID" InsertCommand="INSERT INTO ([UserID], [EmailTo], [EmailFrom], [Subject], [Message], [Status], [Reply], [Forward], [UserName], [SentOn], [IP], [BrowserInfo], [DNSInfo]) VALUES (@UserID, @EmailTo, @EmailFrom, @Subject, @Message, '@Status', '@Reply', '@Forward', @UserName, @SentOn, @IP, @BrowserInfo, @DNSInfo)" SelectCommand="SELECT * FROM WHERE ([UserID] = @UserID)" UpdateCommand="UPDATE SET [UserID] = @UserID, [EmailTo] = @EmailTo, [EmailFrom] = @EmailFrom, [Subject] = @Subject, [Message] = @Message, [Status] = @Status, [Reply] = @Reply, [Forward] = @Forward, [UserName] = @UserName, [BrowserInfo] = @BrowserInfo, [DNSInfo] = @DNSInfo WHERE [EmailID] = @EmailID"> <DeleteParameters> <asp:Parameter Name="EmailID" Type="Int32" /> </DeleteParameters> <UpdateParameters> <asp:Parameter Name="UserID" /> <asp:Parameter Name="EmailTo" Type="String" /> <asp:Parameter Name="EmailFrom" Type="String" /> <asp:Parameter Name="Subject" Type="String" /> <asp:Parameter Name="Message" Type="String" /> <asp:Parameter Name="Status" Type="String" /> <asp:Parameter Name="Reply" Type="String" /> <asp:Parameter Name="Forward" Type="String" /> <asp:Parameter Name="UserName" Type="String" /> <asp:Parameter Name="BrowserInfo" Type="String" /> </UpdateParameters> <SelectParameters> <asp:ControlParameter ControlID="email_label" Name="UserID" PropertyName="Text" /> </SelectParameters> <InsertParameters> <asp:Parameter Name="UserID" /> <asp:Parameter Name="EmailTo" Type="String" /> <asp:Parameter Name="EmailFrom" Type="String" /> <asp:Parameter Name="Subject" Type="String" /> <asp:Parameter Name="Message" Type="String" /> <asp:Parameter Name="Status" Type="String" /> <asp:Parameter Name="Reply" Type="String" /> <asp:Parameter Name="Forward" Type="String" /> <asp:Parameter Name="UserName" Type="String" /> <asp:Parameter Name="IP" Type="String" /> <asp:Parameter Name="SentOn" Type="datetime" /> <asp:Parameter Name="BrowserInfo" Type="String" /> <asp:Parameter Name="DNSInfo" Type="String" /> </InsertParameters> </asp:SqlDataSource> <asp:SqlDataSource ID="username_email" runat="server" ConnectionString="<%$ ConnectionStrings:IMS_DB %>" SelectCommand="SELECT [UserName] FROM [Membership] ORDER BY [UserName]"> </asp:SqlDataSource> <asp:ValidationSummary ID="ValidationSummary1" runat="server" HeaderText="You must fill out the following forms:" ValidationGroup="email_send" /> <asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataKeyNames="EmailID" DataSourceID="emailsend_source" DefaultMode="Insert" GridLines="None" Height="50px" Width="125px"> <Fields> <asp:BoundField DataField="EmailID" HeaderText="EmailID" InsertVisible="False" ReadOnly="True" SortExpression="EmailID" /> <asp:TemplateField HeaderText="To" SortExpression="EmailTo"> <EditItemTemplate> <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("EmailTo") %>'></asp:TextBox> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="emailsend_source" DataTextField="UserName" SelectedValue='<%# Bind("UserName") %>' AppendDataBoundItems="True" DataValueField="UserName"> <asp:ListItem>-- Receiving User --</asp:ListItem> </asp:DropDownList> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="DropDownList1" Display="Dynamic" ErrorMessage="Message Receiver (To)" ValidationGroup="email_send"></asp:RequiredFieldValidator> </InsertItemTemplate> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("EmailTo") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="From" SortExpression="EmailFrom"> <EditItemTemplate> <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("EmailFrom") %>'></asp:TextBox> </EditItemTemplate> <InsertItemTemplate> <asp:LoginName ID="login_name" runat="server" /> </InsertItemTemplate> <ItemTemplate> <asp:Label ID="Label2" runat="server" Text='<%# Bind("EmailFrom") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Subject" SortExpression="Subject"> <EditItemTemplate> <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Subject") %>'></asp:TextBox> </EditItemTemplate> <InsertItemTemplate> <asp:TextBox ID="TextBox3" runat="server" MaxLength="50" Text='<%# Bind("Subject") %>' ValidationGroup="send_email"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="TextBox3" Display="Dynamic" ErrorMessage="Subject" ValidationGroup="email_send"></asp:RequiredFieldValidator> </InsertItemTemplate> <ItemTemplate> <asp:Label ID="Label3" runat="server" Text='<%# Bind("Subject") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Message" SortExpression="Message"> <EditItemTemplate> <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("Message") %>'></asp:TextBox> </EditItemTemplate> <InsertItemTemplate> <asp:TextBox ID="TextBox4" runat="server" Columns="40" MaxLength="500" Rows="10" Text='<%# Bind("Message") %>' TextMode="MultiLine" ValidationGroup="send_mail"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ControlToValidate="TextBox4" Display="Dynamic" ErrorMessage="Message" ValidationGroup="email_send"></asp:RequiredFieldValidator> </InsertItemTemplate> <ItemTemplate> <asp:Label ID="Label4" runat="server" Text='<%# Bind("Message") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:CommandField InsertText="Send Message" ShowInsertButton="True" ValidationGroup="email_send" /> </Fields> </asp:DetailsView></asp:Content>
View 2 Replies View RelatedHi i get the above error whenever i try and run my page, what i am trying to do is embed a repeater within a datalist, here is my code;public void Page_Load(object sender, EventArgs e)
{string strID = Request.QueryString["id"];
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["streamConnectionString"].ConnectionString);SqlCommand command = new SqlCommand("stream_Users", conn);
command.CommandType = CommandType.StoredProcedure;command.Parameters.Add("@userID", SqlDbType.Int).Value = Request.QueryString["id"];
SqlDataAdapter cmd1 = new SqlDataAdapter(command);
//Create and fill the DataSet.DataSet ds = new DataSet();
cmd1.Fill(ds, "userName");
//Create a second DataAdapter for the Titles table.SqlDataAdapter cmd2 = new SqlDataAdapter("select * from UserSpecialties", conn);
cmd2.Fill(ds, "specialty");
//Create the relation bewtween the Authors and Titles tables.ds.Relations.Add("myrelation",
ds.Tables["userName"].Columns["userID"],ds.Tables["specialtyName"].Columns["userID"]);
//Bind the Authors table to the parent Repeater control, and call DataBind.DataList1.DataSource = ds.Tables["userName"];
Page.DataBind();
//Close the connection.
conn.Close();
}
Hi
I have a table with the list of employee and 15 column with data type float or money , that represent the number of hours, airfare,gas,parking food, etc....
I have 2 choice:
-Put 0 as a default value for each column, like that I do not have to use coalesce when I do SUM for each column.
-Leave the default value null but I will have to use coalesce.
In term of performance, what is the best solution?
Thanks
Hello FriendsSuppose I'm designing one database table- ABC master and it has fields like field1, field2........field5. From these fields, Field1 is PK and 2 & 3 and mandatory. So while creating this table, is it necessary to specify the field 2 & 3 as NotNull in Null column.If I specify them as Null then does it effect aby thing. As i know that before saving the data to the database the programming logic checks whether the mandatory data entered or not?Reply back..Thanks
View 3 Replies View RelatedHi,
I have a table in which out of 20 columns, there will be data only in a few columns. So, I need to find those column names which have data in them. I was able to do it using the information_schema and using a cursor to loop through all the column names and find out which columns have data in them. But i need to know if there is a more efficient way of doing this without using the cursor. Can somebody please let me know how this can be done without using a cursor? Thank you.
I am trying to concatenate three columns and when one column might be NULL, the result set is NULL. I have set "concat null yields null" to false and the result is the same. Here is my code:
Code:
SELECT lname + ',' + space(1) + fname + SPACE(1) + mname as FullName
TIA
Mike
Cannot insert the value NULL into column 'City', table 'DB_61318_itweb.dbo.Location'; column does not allow nulls.
INSERT fails.
<code>
create table country(country_code nvarchar(2), country_name nvarchar(255))
create table states(country_code nvarchar(2),state_code nvarchar(20),state_name nvarchar(255))
create table weblocations (country_code nvarchar(2), state_code nvarchar(20),city_name nvarchar(255),timezoneid varchar(255))
INSERT INTO Location
([Country],[City], [State] )
[Code] .....
I have to populate a table of exchange rates which is easy enough however because rates are held on Fridays but I need to make calculations on weekends or holidays I need to populate the Friday rate on non weekends and holidays. I have a sample table below with null values on the weekends for the last 90 days but need a script that will show the Friday exchange rate on Saturday and Sunday
Here was my latest attempt
;with cte as
(
select currxdate, [from], [TO], CurrXRate
from dbo.CurrXchange
)
select a.CurrXDate, a.[From],a.[To]
, isnull(a.CurrXRate, b.currxrate) as 'CurrXRate'
[Code] ....
How do you alter a table to set a column which is currently int, to int not null?
I have already set all values to either 0 or 1.
Why can't I use:
Alter table myTable alter myCol int not null default(0)
I get a syntax error on the word default. If I remove "default(0)" then the command executes ok, but my Inserts don't work because there's no default value.
If no value is supplied on an insert for an int column that allows nulls, will the value be null or 0 ?
View 1 Replies View RelatedHi All,
I've one table named tableAB. in that i've added one new column with not null option in the enterprise manager. then i've generated the script, and run the script in client database. because already data is there, it is not accepting to put null value in the new column. so the is missing. anyway backup is there with me.
what is the solution for this....
thanks in advance
how do you change the allow null on a column to be 0,
so instead of having null when empty, it would be 0,
I tried default value or binding to 0 to -1, and to 1
and in 0 or -1, it stays null, in 1 it puts the 1
for example if is quantity, it puts as if I would have 1 quantity,
so it's either null, or whathever number I put visides -1 or 0
how can I make it be 0 as defult?
I'm using it to add and substract with computed column, formula;
and the problem is that if it's the first time it's used it does not add or substract, becsause it does not add null with a number, if it has 0 than it works,
whata I had to do is add it manually, but of course it doesn't suppoesed to be that way
any suggestions will be appriciated:
Hi,How to find first not null value in column whitout chacking whole table(if there is a not null value then show me it and stop searching, thetable is quite big)?thx,Martin*** Sent via Developersdex http://www.developersdex.com ***
View 26 Replies View RelatedDoes anyone know what it means when i see somerecords returned that have their COLUMN valueas NULL?I investigated a little to see if they are somehowrelated to orphaned users but I don't believe theyare. What else would cause this column to be NULL?And it seems they are all MSP related. Maybe this isa Project Server bug?Here's one sample:Owner dboObject MSP_WEB_FN_SEC_GetAllProjectsResCanViewByViewIDGrantee MSProjectServerRoleGrantor dboProtectType GrantAction SelectColumn NULLThank you
View 1 Replies View RelatedDo anyone know how I can automatically place a value eg. €œNOTHING€? in a database column when there is no or has a NULL value. Thanks.
View 2 Replies View Related
I have a flat file source. I tried to use a conditional split, which if found any null values in a column of data type string then send it to error output, other wise send the rows to the db table. I used !ISNULL( <<Field Name>>) , but every time it's send all the column to the DB table, even the value in the column is null. Can some one give me some idea about what should I do?
Any help is appreciated.
Sabina_2008
I've 2 tables with a relation:
Customers
- CustId
- Name
- LevelId ==> FK relation to Levels.LevelId
Levels
- LevelId
- Description
What I want to do, is save a NULL value in the Customers.LevelId when no level is selected. I'm using C#, a CLR StoredProcedure and the DbType.Int32 for that column. When I try to save a null value, it says "cannot convert null to int", what is clear. But in the database it is possible to save a NULL value.
The question is: How to save a null value in a int column via a C# CLR Stored Procedure?
Hi dear experts:
The message is
"Cannot insert the value NULL into column 'ID_Month', table 'Database_DW.dbo.Incident_Summary'; column does not allow nulls..."
At my table, I have a primary key which make autonumber for any record set in column 'ID_Month'. How can I insert autonumber in column 'ID_Month'by SQL statement?
Thank you in advance.
can anybody tell me how to do a select query on a datetime field where if i have a null value in that column, i need to display a some character.
View 4 Replies View RelatedHello,
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?