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We may use the SQL INSERT INTO command to add a
record to a table in a database.
Add a Record to a Table in a Database
We want to add a new record to the Customers table in the
Northwind database. We first create a form that contains the
fields we want to collect data from:
<html>
<body>
<form method="post" action="demo_add.asp">
<table>
<tr>
<td>CustomerID:</td>
<td><input name="custid"></td>
</tr><tr>
<td>Company Name:</td>
<td><input name="compname"></td>
</tr><tr>
<td>Contact Name:</td>
<td><input name="contname"></td>
</tr><tr>
<td>Address:</td>
<td><input name="address"></td>
</tr><tr>
<td>City:</td>
<td><input name="city"></td>
</tr><tr>
<td>Postal Code:</td>
<td><input name="postcode"></td>
</tr><tr>
<td>Country:</td>
<td><input name="country"></td>
</tr>
</table>
<br /><br />
<input type="submit" value="Add New">
<input type="reset" value="Cancel">
</form>
</body>
</html>
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When the user presses the submit button the form is sent to a
file called "demo_add.asp". The "demo_add.asp" file contains the
code that will add a new record to the Customers table:
<html>
<body>
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"
sql="INSERT INTO customers (customerID,companyname,"
sql=sql & "contactname,address,city,postalcode,country)"
sql=sql & " VALUES "
sql=sql & "('" & Request.Form("custid") & "',"
sql=sql & "'" & Request.Form("compname") & "',"
sql=sql & "'" & Request.Form("contname") & "',"
sql=sql & "'" & Request.Form("address") & "',"
sql=sql & "'" & Request.Form("city") & "',"
sql=sql & "'" & Request.Form("postcode") & "',"
sql=sql & "'" & Request.Form("country") & "')"
on error resume next
conn.Execute sql,recaffected
if err<>0 then
Response.Write("No update permissions!")
else
Response.Write("<h3>" & recaffected & " record added</h3>")
end if
conn.close
%>
</body>
</html>
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Important
If you use the SQL INSERT command be aware of the following:
- If the table contains a primary key, make sure to append
a unique, non-Null value to the primary key field (if not,
the provider may not append the record, or an error occurs)
- If the table contains an AutoNumber field, do not
include this field in the SQL INSERT command (the value of
this field will be taken care of automatically by the
provider)
What about Fields With no Data?
In a MS Access database, you can enter zero-length strings
("") in Text, Hyperlink, and Memo fields IF you set the
AllowZeroLength property to Yes.
Note: Not all databases support zero-length strings
and may cause an error when a record with blank fields is added.
It is important to check what data types your database supports.
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