diff --git a/handlers/views_handler_filter_fields_compare.inc b/handlers/views_handler_filter_fields_compare.inc
new file mode 100644
index 0000000..8e5cd11
--- /dev/null
+++ b/handlers/views_handler_filter_fields_compare.inc
@@ -0,0 +1,134 @@
+<?php
+
+/**
+ * @file
+ * Definition of views_handler_filter_fields_compare.
+ */
+
+/**
+ * A handler to filter a view using fields comparison.
+ *
+ * @ingroup views_filter_handlers
+ */
+
+class views_handler_filter_fields_compare extends views_handler_filter {
+
+	function can_expose() {
+		return FALSE;
+	}
+
+	/**
+	 * Implements views_object#option_definition().
+	 */
+	function option_definition() {
+		$options = parent::option_definition();
+
+		$options['left_field'] = $options['right_field'] = array('default' => '');
+
+		return $options;
+	}
+
+	/**
+	 * Provide a list of all operators.
+	 */
+	function fields_operator_options() {
+		return array(
+			'<' => t('Is less than'),
+			'<=' => t('Is less than or equal to'),
+			'=' => t('Is equal to'),
+			'!=' =>	t('Is not equal to'),
+			'>=' => t('Is greater than or equal to'),
+			'>' => t('Is greater than')
+		);
+	}
+
+	/**
+	 * Provide a list of available fields.
+	 */
+	function field_options() {
+		$options = array();
+
+		foreach ($this->view->display_handler->get_handlers('field') as $field => $handler) {
+			if ($handler->table != 'views') {
+				$options[$field] = $handler->ui_name();
+			}
+		}
+
+		return $options;
+	}
+
+	/**
+	 * Implements views_handler#options_form().
+	 */
+	function options_form(&$form, &$form_state) {
+		parent::options_form($form, $form_state);
+
+		$field_options = $this->field_options();
+
+		$form['left_field'] = array(
+			'#type' => 'select',
+			'#title' => t('Left field'),
+			'#default_value' => $this->options['left_field'],
+			'#options' => $field_options,
+			'#weight' => -3,
+		);
+
+		$form['operator'] = array(
+			'#type' => 'select',
+			'#title' => t('Operator'),
+			'#default_value' => $this->options['operator'],
+			'#options' => $this->fields_operator_options(),
+			'#weight' => -2,
+		);
+
+		$form['right_field'] = array(
+			'#type' => 'select',
+			'#title' => t('Right field'),
+			'#default_value' => $this->options['right_field'],
+			'#options' => $field_options,
+			'#weight' => -1,
+		);
+
+	}
+
+	/**
+	 * Implements views_handler_filter#query().
+	 *
+	 * Build extra condition from existing fields (from existing joins).
+	 */
+	function query() {
+		$left = $this->options['left_field'];
+		$right = $this->options['right_field'];
+
+		$handlers = $this->view->display_handler->get_handlers('field');
+		if (!isset($handlers[$left], $handlers[$right])) {
+			return;
+		}
+
+		$left_handler = $handlers[$left];
+		$left_handler->set_relationship();
+		$left_table_alias = $this->query->ensure_table($left_handler->table, $left_handler->relationship);
+
+		$right_handler = $handlers[$right];
+		$right_handler->set_relationship();
+		$right_table_alias = $this->query->ensure_table($right_handler->table, $right_handler->relationship);
+
+		$snippet =
+			$left_table_alias . '.' . $left_handler->real_field .
+			' ' . $this->options['operator'] . ' ' .
+			$right_table_alias . '.' . $right_handler->real_field;
+
+		$this->query->add_where_expression($this->options['group'], $snippet);
+	}
+
+	/**
+	 * Implements views_handler#admin_summary().
+	 */
+	function admin_summary() {
+		return
+			$this->options['left_field'] . ' ' .
+			$this->options['operator'] . ' ' .
+			$this->options['right_field'];
+	}
+
+}
diff --git a/modules/views.views.inc b/modules/views.views.inc
index 2029aa8..3116d49 100644
--- a/modules/views.views.inc
+++ b/modules/views.views.inc
@@ -110,5 +110,14 @@ function views_views_data() {
     );
   }
 
+  $data['views']['fields_compare'] = array(
+    'title' => t('Fields comparison'),
+    'help' => t('Compare database fields against eachother.'),
+    'filter' => array(
+      'help' => t('Use fields comparison to filter the result of the view.'),
+      'handler' => 'views_handler_filter_fields_compare',
+    )
+  );
+
   return $data;
 }
diff --git a/views.info b/views.info
index 5802e22..d351d96 100644
--- a/views.info
+++ b/views.info
@@ -49,6 +49,7 @@ files[] = handlers/views_handler_filter_in_operator.inc
 files[] = handlers/views_handler_filter_many_to_one.inc
 files[] = handlers/views_handler_filter_numeric.inc
 files[] = handlers/views_handler_filter_string.inc
+files[] = handlers/views_handler_filter_fields_compare.inc
 files[] = handlers/views_handler_relationship.inc
 files[] = handlers/views_handler_relationship_groupwise_max.inc
 files[] = handlers/views_handler_sort.inc