SELECT SUM da hatamı yapıyorum ?

$hit = @mysql_query("SELECT SUM(y_hit) FROM yazilar");
echo $hit;

Resource id #5

$hit = @mysql_query("SELECT SUM(y_hit) as degerim FROM yazilar");
$oku=mysql_fetch_assoc($hit);
echo $oku['degerim'];

$hit = @mysql_query("SELECT SUM(y_hit) as sonuc FROM yazilar"); 
$sonuc = mysql_fetch_assoc($hit);
echo $sonuc['sonuc'];