From 87c06e6ebd1674348170cfcc732d91f304e6878a Mon Sep 17 00:00:00 2001
From: stronk7 <stronk7>
Date: Fri, 7 Dec 2007 15:58:04 +0000
Subject: [PATCH] Using new cross-db sql_isnotempty() function. MDL-12084

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

diff --git a/mod/quiz/locallib.php b/mod/quiz/locallib.php
index bc7e7686a4..3ad67040f5 100644
--- a/mod/quiz/locallib.php
+++ b/mod/quiz/locallib.php
@@ -357,7 +357,7 @@ function quiz_has_feedback($quizid) {
     static $cache = array();
     if (!array_key_exists($quizid, $cache)) {
         $cache[$quizid] = record_exists_select('quiz_feedback',
-                "quizid = $quizid AND feedbacktext <> ''");
+                "quizid = $quizid AND " . sql_isnotempty('quiz_feedback', 'feedbacktext', false, true));
     }
     return $cache[$quizid];
 }
-- 
2.39.5