From 8268af4077d0bf194bf7c363a9766340a8624cdf Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@git.wordpress.org>
Date: Wed, 13 Feb 2008 19:15:30 +0000
Subject: [PATCH] Add comment_date_gmt key to comments table.  Optimize
 _wp_get_comment_list() query. fixes #5785

git-svn-id: https://develop.svn.wordpress.org/trunk@6825 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/includes/schema.php   | 3 ++-
 wp-admin/includes/template.php | 4 ++--
 wp-includes/version.php        | 4 ++--
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/wp-admin/includes/schema.php b/wp-admin/includes/schema.php
index a4815b740e..6ff1579751 100644
--- a/wp-admin/includes/schema.php
+++ b/wp-admin/includes/schema.php
@@ -53,7 +53,8 @@ CREATE TABLE $wpdb->comments (
   PRIMARY KEY  (comment_ID),
   KEY comment_approved (comment_approved),
   KEY comment_post_ID (comment_post_ID),
-  KEY comment_approved_date_gmt (comment_approved,comment_date_gmt)
+  KEY comment_approved_date_gmt (comment_approved,comment_date_gmt),
+  KEY comment_date_gmt (comment_date_gmt)
 ) $charset_collate;
 CREATE TABLE $wpdb->links (
   link_id bigint(20) NOT NULL auto_increment,
diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index b11e930895..f67b721c02 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -556,9 +556,9 @@ function _wp_get_comment_list( $s = false, $start, $num ) {
 			comment_author_IP LIKE ('%$s%') OR
 			comment_content LIKE ('%$s%') ) AND
 			comment_approved != 'spam'
-			ORDER BY comment_date DESC LIMIT $start, $num");
+			ORDER BY comment_date_gmt DESC LIMIT $start, $num");
 	} else {
-		$comments = $wpdb->get_results( "SELECT SQL_CALC_FOUND_ROWS * FROM $wpdb->comments WHERE comment_approved = '0' OR comment_approved = '1' ORDER BY comment_date DESC LIMIT $start, $num" );
+		$comments = $wpdb->get_results( "SELECT SQL_CALC_FOUND_ROWS * FROM $wpdb->comments USE INDEX (comment_date_gmt) WHERE comment_approved = '0' OR comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT $start, $num" );
 	}
 
 	update_comment_cache($comments);
diff --git a/wp-includes/version.php b/wp-includes/version.php
index ae40f61f0a..6d592939a2 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,6 +16,6 @@ $wp_version = '2.4-bleeding';
  *
  * @global int $wp_db_version
  */
-$wp_db_version = 6748;
+$wp_db_version = 6825;
 
-?>
\ No newline at end of file
+?>