From 18244534612a475811066e983a15c81ea54d8556 Mon Sep 17 00:00:00 2001
From: Tim Starling <tstarling@users.mediawiki.org>
Date: Mon, 4 May 2009 09:31:34 +0000
Subject: [PATCH] (bug 18657) Workaround for MySQL optimiser bug. Replaces
 Domas's live patch.

---
 includes/LogEventsList.php | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/includes/LogEventsList.php b/includes/LogEventsList.php
index 18a0a7e10b..40204d0bdd 100644
--- a/includes/LogEventsList.php
+++ b/includes/LogEventsList.php
@@ -726,6 +726,17 @@ class LogPager extends ReverseChronologicalPager {
 	public function getTagFilter() {
 		return $this->mTagFilter;
 	}
+
+	public function doQuery() {
+		// Work around MySQL optimizer bug
+		if ( in_array( get_class( $this->mDb ), array( 'Database', 'DatabaseMysql' ) ) ) {
+			$this->mDb->query( 'SET SQL_BIG_SELECTS=1' );
+			parent::doQuery();
+			$this->mDb->query( 'SET SQL_BIG_SELECTS=0' );
+		} else {
+			parent::doQuery();
+		}
+	}
 }
 
 /**
-- 
2.20.1