How Do I Insert a Null Value in an Access Database?

When you need to insert a null value into a column in an Access database, you could use "" to indicate a zero-length string. However, a zero-length string is not the same as Null. To insert a Null value, simple pass the keyword Null for the column, as shown in the code example.
<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<% Option Explicit %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
  <title>Inserting Null in a Microsoft Access Database</title>
</head>
<body>
<%
  Dim MyConnection
  Dim MyConnectionString
  Dim MySQLStatement
MyConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _ "Data Source=C:\Databases\WebSite.mdb;User Id=admin;Password=" MySQLStatement = "INSERT INTO MyTable " & _ "(Column1, Column2) Values('A Value', null)" Set MyConnection = Server.CreateObject("ADODB.Connection") MyConnection.Open MyConnectionString MyConnection.Execute(MySQLStatement) MyConnection.Close() Set MyConnection = Nothing Response.Write("Record inserted successfully")
%>
</body>
</html>

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On Wednesday, May 21, 2008 10:42:59 AM pavani said:
how to enter null values of textbox into ms access database?
On Wednesday, May 21, 2008 5:06:53 PM Imar Spaanjaars said:
Heuh? Isn't this what the article is about?

Imar
On Wednesday, January 06, 2010 5:30:37 PM Mitali Chaudhuri said:
I have a linked table in Access, which resides in Oracle. The field in question is a NUMBER(19,4) column in the Oracle table.

I wanted to insert a null value into this field using Access VBA code using this sql string:

strInsSQL = insert into OracleTable (PROP_APPR_LOWR_VAL)
VALUES ( Nz(Me.NET_DOM_LWR.OldValue, null))

Using "null" in the string above didn't work.

How can I insert a null value for this field from Access into the underlying linked table?

Thanks in advance.

Mitali
On Wednesday, January 06, 2010 7:41:42 PM Imar Spaanjaars said:
Hi Mitali,

Difficult to say as this string doesn't look valid to me at all (no quotes) which makes it impossible to tell where you're using the null value.

Cheers,

Imar

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