git rm --cached my/compile_file
SELECT 1 AS sort, a.author_id, a.status, u.username, u.user_colour FROM ...
$rDate1 = datetime::createFromFormat('d/m/Y H:i:s','20/12/2015 13:56:00');
$rDate2 = datetime::createFromFormat('d/m/Y H:i:s','03/05/2014 14:54:00');
var_dump($rDate1->diff($rDate2));