mysql 排序修改删除

排序：
<?php
$con=mysql_connect("localhost","root","");
if(!$con){
die("连接失败".mysql_error);
}

mysql_select_db("school",$con);

//根据Name排序，ORDER BY Name DESC倒序
$result=mysql_query("SELECT * FROM student
ORDER BY Name");

while($row=mysql_fetch_array($result)){
echo $row['Name']." ".$row['Sex'];
echo "<br/>";
}

mysql_close($con);
?>

修改：
mysql_query("UPDATE student SET Age='23' WHERE Name='xxx' AND Sex='xxx'");

删除：
mysql_query("DELETE FROM student WHERE Name='xxx'");