From 18b29ca074845ca7ea7d8f0d9fb8acdd07f75d9b Mon Sep 17 00:00:00 2001
From: Marc Alexander <admin@m-a-styles.de>
Date: Thu, 11 May 2017 18:30:51 +0200
Subject: [PATCH] [ticket/15226] Add index for latest topics to topics table

PHPBB3-15226
---
 .../data/v31x/add_latest_topics_index.php     | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 phpBB/phpbb/db/migration/data/v31x/add_latest_topics_index.php

diff --git a/phpBB/phpbb/db/migration/data/v31x/add_latest_topics_index.php b/phpBB/phpbb/db/migration/data/v31x/add_latest_topics_index.php
new file mode 100644
index 0000000000..fa2899e348
--- /dev/null
+++ b/phpBB/phpbb/db/migration/data/v31x/add_latest_topics_index.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ *
+ * This file is part of the phpBB Forum Software package.
+ *
+ * @copyright (c) phpBB Limited <https://www.phpbb.com>
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ * For full copyright and license information, please see
+ * the docs/CREDITS.txt file.
+ *
+ */
+
+namespace phpbb\db\migration\data\v31x;
+
+class add_latest_topics_index extends \phpbb\db\migration\migration
+{
+	static public function depends_on()
+	{
+		return array(
+			'\phpbb\db\migration\data\v31x\v3110',
+		);
+	}
+
+	public function update_schema()
+	{
+		return array(
+			'add_index' => array(
+				$this->table_prefix . 'topics' => array(
+					'latest_topics'	=> array(
+						'forum_id',
+						'topic_last_post_time',
+						'topic_last_post_id',
+						'topic_moved_id',
+					),
+				),
+			),
+		);
+	}
+
+	public function revert_schema()
+	{
+		return array(
+			'drop_keys' => array(
+				$this->table_prefix . 'topics' => array(
+					'latest_topics',
+				),
+			),
+		);
+	}
+}