function get_occurs_within_where_clause($table_name, $rel_table, $start_ts_obj, $end_ts_obj, $field_name = 'date_start', $view)
 {
     global $timedate;
     $dtUtilArr = array();
     switch ($view) {
         case 'month':
             $start_ts = $start_ts_obj->get_first_day_of_this_month();
             $end_ts = $end_ts_obj->get_first_day_of_next_month();
             break;
         default:
             // Date for the past 5 days as that is the maximum duration of a single activity
             $dtUtilArr['ts'] = $start_ts_obj->ts - 86400 * 5;
             $start_ts = new DateTimeUtil($dtUtilArr, false);
             // Date for the next 5 days as that is the maximum duration of a single activity
             $dtUtilArr['ts'] = $end_ts_obj->ts + 86400 * 5;
             $end_ts = new DateTimeUtil($dtUtilArr, false);
             break;
     }
     $start_mysql_date = explode('-', $start_ts->get_mysql_date());
     $start_mysql_date_time = explode(' ', $timedate->handle_offset(date($GLOBALS['timedate']->get_db_date_time_format(), $start_ts->ts), $timedate->dbDayFormat, true));
     $end_mysql_date = explode('-', $end_ts->get_mysql_date());
     $end_mysql_date_time = explode(' ', $timedate->handle_offset(date($GLOBALS['timedate']->get_db_date_time_format(), $end_ts->ts), $timedate->dbDayFormat, true));
     $where = "(" . db_convert($table_name . '.' . $field_name, 'date_format', array("'%Y-%m-%d'"), array("'YYYY-MM-DD'")) . " >= '{$start_mysql_date_time[0]}' AND ";
     $where .= db_convert($table_name . '.' . $field_name, 'date_format', array("'%Y-%m-%d'"), array("'YYYY-MM-DD'")) . " <= '{$end_mysql_date_time[0]}')";
     if ($rel_table != '') {
         $where .= ' AND ' . $rel_table . '.accept_status != \'decline\'';
     }
     return $where;
 }