mysql如何更新数据库字段教程
mysql如何更新数据库字段教程 语法 UPDATE table_name SET column_name = new_value WHERE column_name = some_value 注释:SQL 对大小写不敏感。UPDATE 与 update 等效。 为了让 PHP 执行上面的语句,我们必须使用 mysql_query( 函数。该函数用于向 SQL 连
mysql如何更新数据库字段教程
语法
UPDATE table_name SET column_name = new_value WHERE column_name = some_value
注释:SQL 对大小写不敏感。UPDATE 与 update 等效。
为了让 PHP 执行上面的语句,我们必须使用 mysql_query( 函数。该函数用于向 SQL 连接发送查询和命令。
例子
稍早时,,我们在本教程中创建了一个名为 "Person" 的表。它看起来类似这样:
FirstName LastName Age Peter Griffin 35 Glenn Quagmire 33
下面的例子更新 "Person" 表的一些数据:
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
mysql_query("UPDATE Person SET Age = '36'
WHERE FirstName = 'Peter' AND LastName = 'Griffin'");
mysql_close($con);
?>
在这次更新后,"Person" 表格是这样的:
FirstName LastName Age
Peter Griffin 36
Glenn Quagmire 33
注:更多精彩文章请关注三联编程教程栏目。

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