How To Pass Null Value To The Database If A Form Field Is Empty?

May 31, 2004

How can I pass into the database (@User_fax = null) if the fax form field is empty, from a command type Stored Procedure? For example:

Dim CmdUpdate As New SqlCommand("Form2_NewUser", strConnection)

CmdUpdate.CommandType = CommandType.StoredProcedure

CmdUpdate.Parameters.Add("@User_fax", SqlDbType.char, 9)

CmdUpdate.Parameters("@User_fax").Value = fax.Text()




And, the stored procedure inside Sql server:

USE market1


ALTER PROC Form2_NewUser

@User_id bigint, @User_fax char(9),...




SET User_fax = @User_fax, ...

WHERE User_id = @User_id



Thank you,


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Dec 24, 2013

I have created a form with basic validation :

if($formValue['forename']=="" || $formValue['surname']=="" || $formValue['username']=="" || $formValue['password']=="" || $formValue['email']=="" ){
$message = "Missing data - please try again" ;
header("Location: registration.php?message=$message");

I want to validate each field individually.

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Feb 19, 2007

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I have it working so that if a user enters a name and surname for example, it will return all records with either the name matching or surname matching input parameters. What I want to do is to set up a SQL query which is:
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so that if the user only enters the first name and surname for example as above, it ONLY returns the record which matches the first name and surname and not all records with either/or. One way I've thought of to do this is to convert the empty fields to "Nothing" so that it fullfils the search parameter for the empty fields. If someone can explain how to do this, or can suggest a better way, I'd be grateful.

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Dec 30, 2003

I need to pass in null/blank value in the date field or declare the field as string and convert date back to string.

I tried the 2nd option but I am having trouble converting the two digits of the recordset (rs_get_msp_info(2), 1, 2))) into a four digit yr. But it will only the yr in two digits.
The mfg_start_date is delcared as a string variable

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option 1
I will have to declare the mfg_start_date as date but I need to send in a blank value for this variable in the stored procedure. It won't accept a null or blank value.

With refresh_shipping_sched
.ActiveConnection = CurrentProject.Connection
.CommandText = "spRefresh_shipping_sched"
.CommandType = adCmdStoredProc
.Parameters.Append .CreateParameter("ret_val", adInteger, adParamReturnValue)
.Parameters.Append .CreateParameter("@option", adInteger, adParamInput, 4, update_option)
.Parameters.Append .CreateParameter("@mfg_ord_num", adChar, adParamInput, mfg_ord_num_length, "")
.Parameters.Append .CreateParameter("@mfg_start_date", adChar, adParamInput, 10, "")
Set rs_refresh_shipping_sched = .Execute

Please help

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What do I do now to get around this? How do I fix it?

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Oct 27, 2004

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IF ((SELECT Note FROM XATPoDetail WHERE ReqNbr = (SELECT ReqNbr FROM Inserted)) LIKE(''))

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Anyway To Check If A Text Field Is Blank (not Null But Just A Empty String '') ?

Oct 27, 2004

i have a trigger on a table right now... when fields are inserted, theres a text field inserted and i want to check if that text field = '' (the empty string, not NULL) and if it doesn't equal that, then perform some row updates on other tables, but if it is empty, to not do anything else in the trigger... right now i have this:

IF ((SELECT Note FROM XATPoDetail WHERE ReqNbr = (SELECT ReqNbr FROM Inserted)) LIKE(''))

Note is the text field, XATPoDetail is the table where its being inserted into. I had to do the select FROM the table because it wouldn't let me select a text data type from the "Inserted" virtual table

but it tells me me "Error 279: The text, ntext, and image data types are invalid in this subquery or aggregate expression"


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Aug 29, 2007

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Could anyone explain about this?


Table 1 : tCountry - Name varchar(80) nullable
Table 2 :tState - Name char(2) nullable
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So,when the state is not present for the country ,i have two options may be - null,''
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Dear All,
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Feb 27, 2008

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create view v_GuestOrder
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select * from v_GuestOrder
Id_Guest OrderName
-------- -----
1 spoon
2 phone
4 tv

I need something similar to

case orderName
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The reason being is that, when I use the code

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<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" %>
<script runat="server">
Private Sub Submitdata(ByVal Source As Object, ByVal e As EventArgs)
End Sub ' Submitdata
<asp:Content ID="Content1" runat="server" ContentPlaceHolderID="ContentPlaceHolder1">
connectionstring="<%$ ConnectionStrings:clientInfoConnectionString %>"
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<asp:formparameter name="CAddress" formfield="Addressbox" />
&nbsp;Name:<br />
<asp:TextBox ID="Namebox" runat="server" /><br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="Namebox"
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<br />Address:<br />
<asp:TextBox ID="Addressbox" runat="server" /><br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="Addressbox"
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<br />
The King

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Jan 12, 2008

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Oct 12, 2004

************* Edited by moderator Adec ***************
Inserted missing < code></ code> tags. Always include such
tags when including code in your postings. Don't force the
moderators to do this for you. Many readers disregard
postings without the code tags.

Well met,

Let's say I have a web form that allows users to insert and update records in a SQL database. Is it better to set empty web controls (textbox, etc.) to DBNull or let it go as an empty string into the database?

Example code:

if (tboxNAME.Text == "")
sqlCommand1.Parameters["@NAME"].Value = DBNull.Value;
sqlCommand1.Parameters["@NAME"].Value = tboxNAME.Text;

Is the above overkill? It seems like it would be a good idea to set fields which the user empties back to Null rather than an empty string.



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Hi folks,

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