? 336483-add-comment-count-index-d6.patch
? 336483-add-comment-count-index-rev2-d6.patch
? 582534-freetagging-fullwidth-comma-D6.patch
? node_load_caching_flag-D6.patch
Index: modules/comment/comment.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.install,v
retrieving revision 1.19.2.1
diff -u -p -r1.19.2.1 comment.install
--- modules/comment/comment.install	6 Jan 2009 15:46:36 -0000	1.19.2.1
+++ modules/comment/comment.install	2 Dec 2009 15:01:10 -0000
@@ -67,6 +67,25 @@ function comment_update_6003() {
   return $ret;
 }
 
+/**
+ * @defgroup updates-6.x-extra Extra system updates for 6.x
+ * @{
+ */
+
+/**
+ * Add index to to node_comment_statistics on comment_count
+ */
+function comment_update_6004() {
+  $ret = array();
+  db_add_index($ret, 'node_comment_statistics', 'comment_count', array('comment_count'));
+  return $ret;
+}
+
+/**
+ * @} End of "defgroup updates-6.x-extra"
+ * The next series of updates should start at 7000.
+ */
+
 
 /**
  * Implementation of hook_schema().
@@ -210,7 +229,8 @@ function comment_schema() {
     ),
     'primary key' => array('nid'),
     'indexes' => array(
-      'node_comment_timestamp' => array('last_comment_timestamp')
+      'node_comment_timestamp' => array('last_comment_timestamp'),
+      'comment_count' => array('comment_count'),
     ),
   );