podvzbzdnul

select name, 1 as boolean from tab 
group by name
having sum(boolean) = 0

$x = "123";
$arr=array(
    "result" => 'success',
    "var" => $x
);

header("Content-type: application/json; charset=utf-8");
echo json_encode($arr);

success:function(data){
   $('.loading').html('');
   console.log(data);
}