From a085adf2bc27a87809ce30870281d1b7c1a7edae Mon Sep 17 00:00:00 2001
From: Barry Oosthuizen <barry.oosthuizen@nottingham.ac.uk>
Date: Tue, 31 Mar 2015 11:35:19 +0100
Subject: [PATCH] Check if there is a manual enrolment with no expiry date

---
 locallib.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/locallib.php b/locallib.php
index c0bef5c..3e2e29c 100644
--- a/locallib.php
+++ b/locallib.php
@@ -1047,7 +1047,7 @@ class attendance {
 
             // CONTRIB-4868
             $mintime = 'MIN(CASE WHEN (ue.timestart > :zerotime) THEN ue.timestart ELSE ue.timecreated END)';
-            $maxtime = 'MAX(ue.timeend)';
+            $maxtime = 'CASE WHEN MIN(ue.timeend) = 0 THEN 0 ELSE MAX(ue.timeend) END';
 
             // CONTRIB-3549
             $sql = "SELECT ue.userid, ue.status,