字段自身+1 SQL语句

   include("config.php");
   
   $id=635;
							$sql_sss8 = "UPDATE data_type_brand SET brand=brand+1 WHERE id='$id'";
							$ddd=mysqli_query($conn, $sql_sss8);  
							if($ddd){
								echo "成功";
							}else{
								echo "失败";
							}

$sql="update set table1 set num=num+1 where id='123(文章ID)';"