From 29ee92888bfc358a0748b95f2989e2d259f8c70d Mon Sep 17 00:00:00 2001
From: poltawski <poltawski>
Date: Sat, 26 Jan 2008 16:04:22 +0000
Subject: [PATCH] MDL-13180 - stop returning duplicate rows merged from
 MOODLE_19_STABLE

---
 mod/forum/lib.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mod/forum/lib.php b/mod/forum/lib.php
index ab11fd4e54..41ef985bbd 100644
--- a/mod/forum/lib.php
+++ b/mod/forum/lib.php
@@ -4459,7 +4459,8 @@ function forum_remove_user_subscriptions($userid, $context) {
                                               FROM {$CFG->prefix}course c,
                                                    {$CFG->prefix}forum_subscriptions fs,
                                                    {$CFG->prefix}forum f
-                                             WHERE c.id = f.course AND f.id = fs.forum AND fs.userid = $userid")) {
+                                                   WHERE c.id = f.course AND f.id = fs.forum AND fs.userid = $userid
+                                                   GROUP BY c.id")) {
 
                 foreach ($courses as $course) {
                     $subcontext = get_context_instance(CONTEXT_COURSE, $course->id);
-- 
2.39.5