Index: lib/deprecatedlib.php
===================================================================
--- lib/deprecatedlib.php	(revision 87)
+++ lib/deprecatedlib.php	(working copy)
@@ -538,11 +538,24 @@
     global $CFG;
     
     $context = get_context_instance(CONTEXT_COURSE, $courseid);
-
-    return get_records_sql("SELECT DISTINCT u.id, u.firstname, u.lastname, l.time
+    // Modified by Shevchenko D.V. - PostgreSQL has a different syntax
+    if (strcmp($CFG->dbtype,'postgres7')==0) {
+      return get_records_sql("SELECT DISTINCT u.id, u.firstname, u.lastname, l.time
                             FROM {$CFG->prefix}user u,
                                  {$CFG->prefix}role_assignments ra,
                                  {$CFG->prefix}log l
+                            WHERE l.time > $timestart
+                              AND l.course = $courseid
+                              AND l.module = 'course'
+                              AND l.action = 'enrol'
+                              AND l.info = u.id::character varying
+                              AND u.id = ra.userid
+                              AND ra.contextid ".get_related_contexts_string($context)."
+                              ORDER BY l.time ASC");
+    } else return get_records_sql("SELECT DISTINCT u.id, u.firstname, u.lastname, l.time
+                            FROM {$CFG->prefix}user u,
+                                 {$CFG->prefix}role_assignments ra,
+                                 {$CFG->prefix}log l
                             WHERE l.time > '$timestart'
                               AND l.course = '$courseid'
                               AND l.module = 'course'