如何使用存储过程选择xml元素属性？

Question

Ok, I have this code for the stored procedure right now.

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

My XML looks like this (simplified).

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

With my code right now I am not able to get the attribute values, as I understand I am trying to get elements inside the <Customer> tag, called CustomerId and Name , that don't exist.

When selecting all rows from the table, after the procedure is done, I get all the rows but with NULL values.

My question, how do I get the attributes from the XML?

Thanks in advance!

Answer 1

You need this:

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)

To get the attribute, use a leading @

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