add piwik installation

www/analytics/core/Updates/1.2.3.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+
+namespace Piwik\Updates;
+
+use Piwik\Common;
+use Piwik\Config;
+use Piwik\Updater;
+use Piwik\Updates;
+
+/**
+ */
+class Updates_1_2_3 extends Updates
+{
+    static function getSql()
+    {
+        return array(
+            // LOAD DATA INFILE uses the database's charset
+            'ALTER DATABASE `' . Config::getInstance()->database['dbname'] . '` DEFAULT CHARACTER SET utf8'                                        => false,
+
+            // Various performance improvements schema updates
+            'ALTER TABLE `' . Common::prefixTable('log_visit') . '`
+				DROP INDEX index_idsite_datetime_config,
+				DROP INDEX index_idsite_idvisit,
+				ADD INDEX index_idsite_config_datetime (idsite, config_id, visit_last_action_time),
+				ADD INDEX index_idsite_datetime (idsite, visit_last_action_time)' => false,
+        );
+    }
+
+    static function update()
+    {
+        Updater::updateDatabase(__FILE__, self::getSql());
+    }
+}
+