From 84eef00ed24ff5214eaea89a964d5a96bc76e5cb Mon Sep 17 00:00:00 2001
From: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date: Fri, 7 Oct 2022 16:15:51 +1100
Subject: [PATCH] MDL-75907 core: Add index on temp table to optimise stats
 cron

---
 lib/statslib.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/statslib.php b/lib/statslib.php
index f449f07f560..04c5744bf85 100644
--- a/lib/statslib.php
+++ b/lib/statslib.php
@@ -1632,6 +1632,7 @@ function stats_temp_table_create() {
     $table->add_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
     $table->add_index('courseid', XMLDB_INDEX_NOTUNIQUE, array('courseid'));
     $table->add_index('roleid', XMLDB_INDEX_NOTUNIQUE, array('roleid'));
+    $table->add_index('useridroleidcourseid', XMLDB_INDEX_NOTUNIQUE, array('userid', 'roleid', 'courseid'));
     $tables['temp_enroled'] = $table;