From 91da92f10d53b393509a51c23249af792577d937 Mon Sep 17 00:00:00 2001
From: Mark Nelson <markn@moodle.com>
Date: Thu, 12 Jul 2018 15:16:24 +0800
Subject: [PATCH] #187 Fix broken SQL on Oracle

---
 classes/task/email_certificate_task.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/classes/task/email_certificate_task.php b/classes/task/email_certificate_task.php
index 88fe7a6..3f13c01 100644
--- a/classes/task/email_certificate_task.php
+++ b/classes/task/email_certificate_task.php
@@ -50,6 +50,7 @@ class email_certificate_task extends \core\task\scheduled_task {
         global $DB, $PAGE;
 
         // Get all the certificates that have requested someone get emailed.
+        $emailotherslengthsql = $DB->sql_length('c.emailothers');
         $sql = "SELECT c.*, ct.id as templateid, ct.name as templatename, ct.contextid, co.id as courseid,
                        co.fullname as coursefullname, co.shortname as courseshortname
                   FROM {customcert} c
@@ -59,7 +60,7 @@ class email_certificate_task extends \core\task\scheduled_task {
                     ON c.course = co.id
                  WHERE (c.emailstudents = :emailstudents
                         OR c.emailteachers = :emailteachers
-                        OR c.emailothers != '')";
+                        OR $emailotherslengthsql >= 3)";
         if ($customcerts = $DB->get_records_sql($sql, array('emailstudents' => 1, 'emailteachers' => 1))) {
             // The renderers used for sending emails.
             $htmlrenderer = $PAGE->get_renderer('mod_customcert', 'email', 'htmlemail');