Delete query deletes from all usesrs

[SilverDragonTears]

Why does this

function getdeltabs() {
$formcontent = "";

$result = $GLOBALS['adopts']->select("tabs", array("username", "name"), "username = '".$GLOBALS['username']."'");

	while ($row = $result->fetchObject()) {
		$tabname=$row->name; 
		$formcontent = $formcontent."<option value='".$tabname."'>".$tabname."</option>";
		$i++;
	}
	return $formcontent;
}

delete all the users tabs when one person deletes a single tab?