From a23669936799d3b42c63707fdd9933fbb1d54bcf Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Wed, 29 Apr 2015 10:52:49 +0800
Subject: [PATCH] MDL-25138 core_tag: fix correlated tags query unique error

---
 tag/lib.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tag/lib.php b/tag/lib.php
index e5c4cccda0b..93023aae661 100644
--- a/tag/lib.php
+++ b/tag/lib.php
@@ -1384,10 +1384,11 @@ function tag_get_correlated($tag_id, $limitnum=null) {
     }
 
     // this is (and has to) return the same fields as the query in tag_get_tags
-    $sql = "SELECT DISTINCT tg.id, tg.tagtype, tg.name, tg.rawname, tg.flag, ti.ordering
+    $sql = "SELECT ti.id AS taginstanceid, tg.id, tg.tagtype, tg.name, tg.rawname, tg.flag, ti.ordering
               FROM {tag} tg
         INNER JOIN {tag_instance} ti ON tg.id = ti.tagid
-             WHERE tg.id IN ({$tag_correlation->correlatedtags})";
+             WHERE tg.id IN ({$tag_correlation->correlatedtags})
+          ORDER BY ti.ordering ASC";
     $result = $DB->get_records_sql($sql);
     if (!$result) {
         return array();