From c2004a795254f31492cd3c9fa341d288a9cdb9e4 Mon Sep 17 00:00:00 2001
From: Tim Hunt <T.J.Hunt@open.ac.uk>
Date: Thu, 4 Oct 2012 11:43:33 +0100
Subject: [PATCH] MDL-34657 user sort: exact match logic should be
 case-insensitive.

---
 lib/datalib.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/datalib.php b/lib/datalib.php
index 2167d665762..4e47268c417 100644
--- a/lib/datalib.php
+++ b/lib/datalib.php
@@ -252,7 +252,7 @@ function users_order_by_sql($usertablealias = '', $search = null, context $conte
 
     $fieldstocheck = array_merge(array('firstname', 'lastname'), get_extra_user_fields($context));
     foreach ($fieldstocheck as $key => $field) {
-        $exactconditions[] = $tableprefix . $field . ' = :' . $paramkey;
+        $exactconditions[] = 'LOWER(' . $tableprefix . $field . ') = LOWER(:' . $paramkey . ')';
         $params[$paramkey] = $search;
         $paramkey++;
     }