没有while循环获取mysql数据以降低速度？

Question

If I only have one row that I'm getting through

$sql = mysql_query("SELECT id,user,comments FROM user WHERE id='15' AND user = '15'");

is there a way to just get the comments from that one row without going through a while loop :

while($row = mysql_fetch_array($sql)){
$comments = $row['comments'];
}

Is there something similar besides using a while loop? If my data has thousands to millions of data, a while loop will take a long time? Is this a more logical way to locate a certain row and reduce its speed?

Thanks for your help!

Answer 1

If you're only returning one row then only fetch once.

if ($row = mysql_fetch_array($result))
{
  $comments = $row['comments'];
}