From 06f31080c7281c8227d2556cd0807744e91c9fb5 Mon Sep 17 00:00:00 2001
From: webchick <webchick@24967.no-reply.drupal.org>
Date: Sat, 10 Dec 2011 23:29:21 -0600
Subject: Issue #813540 by jbrown, chx: Fixed Comparisons involving NULL must
 never return true.

---
 includes/database/query.inc | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

(limited to 'includes')

diff --git a/includes/database/query.inc b/includes/database/query.inc
index c77968767..9cdd8784e 100644
--- a/includes/database/query.inc
+++ b/includes/database/query.inc
@@ -1704,9 +1704,6 @@ class DatabaseCondition implements QueryConditionInterface, Countable {
       if (is_array($value)) {
         $operator = 'IN';
       }
-      elseif (!isset($value)) {
-        $operator = 'IS NULL';
-      }
       else {
         $operator = '=';
       }
@@ -1740,7 +1737,7 @@ class DatabaseCondition implements QueryConditionInterface, Countable {
    * Implements QueryConditionInterface::isNull().
    */
   public function isNull($field) {
-    return $this->condition($field);
+    return $this->condition($field, NULL, 'IS NULL');
   }
 
   /**
-- 
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