sql - 从XML文件插入

Question

我正在尝试使用XML文件更新客户表，但是它没有将XML中的值提取到变量中以传递到表中。我收到的错误消息是“无法将值NULL插入列'EmailAddress'”，即使EmailAddress显然有一个值也是如此。我觉得我缺少一些非常简单的东西，但是无法弄清楚。有什么想法吗？

USE MyGuitarShop

DECLARE @CustomerUpdate XML

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

INSERT Customers (EmailAddress, Password, FirstName, LastName)
    VALUES
    (
        @CustomerUpdate.value('(/NewCustomers/Customer/EmailAddress)[1]', 'varchar(255)'),
        @CustomerUpdate.value('(/NewCustomers/Customer/Password)[1]', 'varchar(60)'),
        @CustomerUpdate.value('(/NewCustomers/Customer/FirstName)[1]', 'varchar(60)'),
        @CustomerUpdate.value('(/NewCustomers/Customer/LastName)[1]', 'varchar(60)')        
    );

SELECT * FROM Customers

Answer 1

我觉得我缺少一些非常简单的东西...


是的，您是对的:-D，您缺少@来读取属性值：

DECLARE @CustomerUpdate XML

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

SELECT
        @CustomerUpdate.value('(/NewCustomers/Customer/@EmailAddress)[1]', 'varchar(255)'),
        @CustomerUpdate.value('(/NewCustomers/Customer/@Password)[1]', 'varchar(60)'),
        @CustomerUpdate.value('(/NewCustomers/Customer/@FirstName)[1]', 'varchar(60)'),
        @CustomerUpdate.value('(/NewCustomers/Customer/@LastName)[1]', 'varchar(60)')        

更新：一次性插入所有<Customer>

试试这个：

DECLARE @Customers TABLE(EMailAddress VARCHAR(100),[Password] VARCHAR(100),FirstName VARCHAR(100),LastName VARCHAR(100));

DECLARE @CustomerUpdate XML

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

INSERT INTO @Customers (EmailAddress, Password, FirstName, LastName)
SELECT c.value('@EmailAddress', 'varchar(255)')
      ,c.value('@Password', 'varchar(60)')
      ,c.value('@FirstName', 'varchar(60)')
      ,c.value('@LastName', 'varchar(60)')        
FROM @CustomerUpdate.nodes(N'/NewCustomers/Customer') AS A(c)

SELECT * FROM @Customers