如何使用存儲過程選擇xml元素屬性？

Question

好吧，我現在有這個存儲過程的代碼。

ALTER PROC [dbo].[Readxml] 
@xmlparam XML 
AS 
BEGIN 
SET NOCOUNT ON 
DECLARE @CustomerXml AS XML 
SET @CustomerXml = @xmlparam 

INSERT INTO Custtable.dbo.SPCustomer 
(
    CustomerId, 
    CustomerName 
) 
SELECT 
    Customer.attribute.value('CustomerId[1]', 'nvarchar(255)') AS CustomerId, 
    Customer.attribute.value('Name[1]', 'nvarchar(255)') AS CustomerName 
FROM 
    @xmlparam.nodes('Customers/Customer') AS Customer(attribute) 
END 

我的XML看起來像這樣（簡化）。

<Customers> 
    <Customer CustomerId="94" Name="name1" /> 
    <Customer CustomerId="95" Name="name2" /> 
    <Customer CustomerId="96" Name="name3" /> 
</Customers> 

我的代碼，現在我無法得到屬性值，按照我的理解，我想獲得<Customer>標籤內的元素，就叫CustomerId和Name，不存在的。

當從表中選擇所有行時，在完成該過程之後，我得到所有行但具有NULL值。

我的問題，我如何從XML獲取屬性？

在此先感謝！

Answer 1

你需要這樣的：

SELECT 
    Customer.attribute.value('@CustomerId', 'nvarchar(255)') AS CustomerId, 
    Customer.attribute.value('@Name', 'nvarchar(255)') AS CustomerName 
FROM 
    @xmlparam.nodes('Customers/Customer') AS Customer(attribute) 

獲取屬性，使用領先的@

Answer 2

ALTER PROC [dbo].[Readxml] 
@xmlparam XML 
AS 
BEGIN 
SET NOCOUNT ON 
DECLARE @CustomerXml AS XML 
SET @CustomerXml = @xmlparam 

INSERT INTO Custtable.dbo.SPCustomer 
(
    CustomerId, 
    CustomerName 
) 
SELECT Customer.attribute.value('@CustomerId', 'BIGINT') AS CustomerId, 
    Customer.attribute.value('@Name', 'nvarchar(255)') AS CustomerName 
FROM @xmlparam.nodes('Customers/Customer') AS Customer(attribute) 

END