VB icon

Batch Update using ADO

Email
Submitted on: 1/1/2015 12:19:00 AM
By: Found on the World Wide Web (from psc cd)  
Level: Intermediate
User Rating: By 3 Users
Compatibility: ASP (Active Server Pages)
Views: 1451
 
     ADO has a great batch update feature that not many people take advantage of. You can use it to update many records at once without making multiple round trips to the database. Here is how to use it.
 
code:
Can't Copy and Paste this?
Click here for a copy-and-paste friendly version of this code!
				
'**************************************
' Name: Batch Update using ADO
' Description:ADO has a great batch update feature that not many people take advantage of. You can use it to update many records at once without making multiple round trips to the database. Here is how to use it.
' By: Found on the World Wide Web (from psc cd)
'**************************************

<HTML>
<HEAD><TITLE>Place Document Title Here</TITLE></HEAD>
<BODY BGColor=ffffff Text=000000>
<%
Set cn = Server.CreateObject("ADODB.Connection")
Set rs = Server.CreateObject("ADODB.RecordSet")
cn.Open Application("guestDSN")
rs.ActiveConnection = cn
rs.CursorType = adOpenStatic
rs.LockType = adLockBatchOptimistic
rs.Source = "SELECT * FROM authors"
rs.Open
If (rs("au_fname") = "Paul") or (rs("au_fname") = "Johnson") Then
newval = "Melissa"
Else
newval = "Paul"
End If
If err <> 0 Then
%>
<B>Error opening RecordSet</B>
<% Else %>
<B>Opened Successfully</B><P>
<% End If %>
<H2>Before Batch Update</H2>
<TABLE BORDER=1>
<TR>
<% For i = 0 to rs.Fields.Count - 1 %>
<TD><B><%= rs(i).Name %></B></TD>
<% Next %>
</TR>
<% For j = 1 to 5 %>
<TR>
<% For i = 0 to rs.Fields.Count - 1 %>
<TD><%= rs(i) %></TD>
<% Next %>
</TR>
<%
rs.MoveNext
Next
rs.MoveFirst
%>
</Table>
Move randomly in the table and perform updates to table.<BR>
<%
Randomize
r1 = Int(rnd*3) + 1 ' n Itterations
r2 = Int(rnd*2) + 1 ' n places skipped between updates
For i = 1 to r1
response.write "Itteration: " & i & "<br>"
rs("au_fname") = newval
For j = 1 to r2
rs.MoveNext
response.write "Move Next<br>" 
Next 
Next
rs.UpdateBatch adAffectAll
rs.Requery
rs.MoveFirst
%>
<% rs.MoveFirst %>
<H2>After Changes</H2>
<TABLE BORDER=1>
<TR>
<% For i = 0 to rs.Fields.Count - 1 %>
<TD><B><%= rs(i).Name %></B></TD>
<% Next %>
</TR>
<% For j = 1 to 5 %>
<TR>
<% For i = 0 to rs.Fields.Count - 1 %>
<TD><%= rs(i) %></TD>
<% Next %>
</TR>
<%
rs.MoveNext
Next
rs.Close
Cn.Close
%>
</TABLE>


Other 11 submission(s) by this author

 


Report Bad Submission
Use this form to tell us if this entry should be deleted (i.e contains no code, is a virus, etc.).
This submission should be removed because:

Your Vote

What do you think of this code (in the Intermediate category)?
(The code with your highest vote will win this month's coding contest!)
Excellent  Good  Average  Below Average  Poor (See voting log ...)
 

Other User Comments


 There are no comments on this submission.
 

Add Your Feedback
Your feedback will be posted below and an email sent to the author. Please remember that the author was kind enough to share this with you, so any criticisms must be stated politely, or they will be deleted. (For feedback not related to this particular code, please click here instead.)
 

To post feedback, first please login.