Question

如何将xml信息文档插入到现有表中，我无法弄清楚insert语句如何工作我的代码如下：

USE MyGuitarShop;

DECLARE @CustomerUpdate XML;
SET @CustomerUpdate = '
    <NewCustomers>
    <Customer LastName="Chan" FirstName="Isabella" Password="" EmailAddress="izzychan@yahoo.com"/>
    <Customer LastName="Prine" FirstName="John" Password="" EmailAddress="johnprine@gmail.com"/>
    <Customer LastName="Kitchen" FirstName="Kathy" Password="" EmailAddress="kathykitchen@sbcglobal.net"/>
    </NewCustomers>
    '
;

INSERT INTO Customers (LastName, Password, EmailAddress)
VALUES (@CustomerUpdate.value('(/NewCustomers/LastName)[1]', 'varchar(50)'),
(@CustomerUpdate.value('(/NewCustomers/FirstName)[1]', 'varchar(50)'),
(@CustomerUpdate.value('(/NewCustomers/Password)[1]', 'varchar(50)'),
(@CustomerUpdate.value('(/NewCustomers/EmailAddress)[1]', 'varchar(50)');

Answer 1

您从LastName选择节点 NewCustomers，而NewCustomers仅包含Customer个节点，其中包含LastName } attribute。

要选择姓氏，请改用以下查询：

value('(/NewCustomers/Customer/@LastName)[1]', 'varchar(50)')

由于您从单个XML值中提取数据，因此选择非常简单：

declare @CustomerUpdate xml;
set @CustomerUpdate = '
<NewCustomers>
    <Customer LastName="Chan" FirstName="Isabella" Password="" EmailAddress="izzychan@yahoo.com"/>
    <Customer LastName="Prine" FirstName="John" Password="" EmailAddress="johnprine@gmail.com"/>
    <Customer LastName="Kitchen" FirstName="Kathy" Password="" EmailAddress="kathykitchen@sbcglobal.net"/>
</NewCustomers>';

select
    t.Customer.value('@LastName', 'nvarchar(50)') as [LastName],
    t.Customer.value('@FirstName', 'nvarchar(50)') as [FirstName],
    t.Customer.value('@Password', 'nvarchar(50)') as [Password],
    t.Customer.value('@EmailAddress', 'nvarchar(50)') as [EmailAddress]
from @CustomerUpdate.nodes('(/NewCustomers/Customer)') t(Customer)

如果您从一行XML值中选择数据，则应使用cross apply代替。

重要提示：不要在数据库中存储普通文本中的密码。如果你真的这样做，那你做错了。如果您不理解原因，请了解哈希和盐，或者更好的是，让其他人为您处理个人信息：OpenID是将保护敏感数据的责任转移给Google规模公司的方法之一。

将INSERT用于xml语句

1 个答案: