$e->selectAdd("
DATE_FORMAT(changedate, '%Y-%m-%d') as changeday,
CONCAT(DATE_FORMAT(changedate, '%Y-%m-%d-') ,Person.id) as id,
$e->selectAdd("
DATE_FORMAT(changedate, '%Y-%m-%d') as changeday,
CONCAT(DATE_FORMAT(changedate, '%Y-%m-%d-') ,Person.id) as id,