--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-580471E3-7DFD-5325-A8B9-B3E7FABF872D.dita	Thu Jan 21 18:18:20 2010 +0000
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept xml:lang="en" id="GUID-580471E3-7DFD-5325-A8B9-B3E7FABF872D"><title>Using TDbColSetIter</title><prolog><metadata><keywords/></metadata></prolog><conbody><section><title>Using the iterator</title> <p><codeph>TDbColSetIter</codeph> provides a useful way to iterate over the contents of a column set. Given a <codeph>CDbColSet* set</codeph>, we can count the number of nullable columns like this:</p> <codeblock id="GUID-14CED4FF-C2A4-54E4-B089-A97EA9503AE6" xml:space="preserve">TInt nullable=0;
+for (TDbColSetIter iter(*set);iter;++iter)
+    {
+    if ((iter-&gt;iAttributes&amp;TDbCol::ENotNull)==0)
+        ++nullable;
+    }</codeblock> </section> </conbody></concept>
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