数据库数据调用有关问题

$rs = mysql_query("select.name, b.name as pname from business_circle a, business_circle b where a.parent_id = b.id");<br />
while($row = mysql_fetch_assoc($rs)) {<br />
  echo $row['name'] . ' ' . $row['pname'] . '<br>';<br />
}<br />

<br />
$rs = mysql_query("select a.name, b.name as pname from business_circle a, business_circle b where a.parent_id = b.id");<br />
while($row = mysql_fetch_assoc($rs)) {<br />
  echo $row['name'] . ' ' . $row['pname'] . '<br>';<br />
}<br />
<br />