$old_record=$app->db->queryOneRecord('SELECT * FROM `web_database` WHERE `database_id` = '.intval($primary_id));
if($old_record['database_user_id']){
// check if any database on the server still uses this one
$check=$app->db->queryOneRecord("SELECT COUNT(*) as `cnt` FROM `web_database` WHERE `server_id` = '".intval($old_record['server_id'])."' AND (`database_user_id` = '".intval($old_record['database_user_id'])."' OR `database_ro_user_id` = '".intval($old_record['database_user_id'])."') AND `sys_groupid` = '".intval($old_record['sys_groupid'])."' AND `database_id` != '".intval($primary_id)."'");