從數據庫中只刪除某些東西

Question

我從w3schools得到了這個php腳本，我想知道是否可能只刪除姓並留下彼得的名字？

<?php 
$con=mysqli_connect("example.com","peter","abc123","my_db"); 
// Check connection 
if (mysqli_connect_errno()) 
{ 
echo "Failed to connect to MySQL: " . mysqli_connect_error(); 
} 

mysqli_query($con,"DELETE FROM Persons WHERE LastName='Griffin'"); 

mysqli_close($con); 
?> 

來源： http://www.w3schools.com/php/php_mysql_delete.asp

Answer 1

是的，只是做

UPDATE Persons 
    set LastName = '' 
WHERE 
    id = ? 

或備選地，設置姓氏= NULL