MDL-14216 "change query to work on Postgres." - some adjustments to make it work...

diff --git a/mod/quiz/report/overview/report.php b/mod/quiz/report/overview/report.php
index 2f43c34914a52a932dc34d0d4dd6865a5e827618..c058677386a9d926048d4b2842f0e22e1dc83bed 100644 (file)
--- a/mod/quiz/report/overview/report.php
+++ b/mod/quiz/report/overview/report.php
@@ -601,7 +601,7 @@ class quiz_overview_report extends quiz_default_report {
         if ($attemptids){
             //make sure we fetch all attempts for users to calculate grade.
             //not just those that have changed.
-            $sql = "SELECT qa2.* FROM {quiz_attempts} qa2 WHERE qa2.userid IN (SELECT DISTINCT userid FROM {quiz_attempts} qa WHERE $attemptsql)";
+            $sql = "SELECT qa2.* FROM {quiz_attempts} qa2 WHERE qa2.userid IN (SELECT DISTINCT userid FROM {quiz_attempts} WHERE $attemptsql)";
         } else {
             $sql = "SELECT * FROM {quiz_attempts} WHERE $attemptsql";
         }