Iterate through XML variable in SQL Server whether what is in XML - sql

Question

In SQL Server, how can I query the following XML
<Employee>
<FirstName>David</FirstName>
<LastName>Jons</LastName>
<Age>28</Age>
</Employee>
<Employee>
<FirstName>Eric</FirstName>
<LastName>Terry</LastName>
<Age>36</Age>
</Employee>
<Employee>
<FirstName>Kady</FirstName>
<LastName>Campell</LastName>
<Age>21</Age>
</Employee>
If the element names are the same, we can use the approach below:
Iterate through XML variable in SQL Server
Therefore, How to get the following result or something like that:
FirstName | LastName | Age
----------- +-------------+-----
David | Jons | 28
Eric | Terry | 36
Kady | Campell | 21
given that I don't know the element name of the XML such as FisrtName, LastName, Age,
I think I hope to get result like this SQL statement:
SELECT * FROM Employee
in which I don't know the column name of table Employee

Answer 1

Try something like this:
DECLARE #input XML = '<Employee>
<FirstName>David</FirstName>
<LastName>Jons</LastName>
<Age>28</Age>
</Employee>
<Employee>
<FirstName>Eric</FirstName>
<LastName>Terry</LastName>
<Age>36</Age>
</Employee>
<Employee>
<FirstName>Kady</FirstName>
<LastName>Campell</LastName>
<Age>21</Age>
</Employee>'
SELECT
FirstName = xc.value('(FirstName)[1]', 'varchar(50)'),
LastName = xc.value('(LastName)[1]', 'varchar(50)'),
Age = xc.value('(Age)[1]', 'int')
FROM
#input.nodes('/Employee') AS XT(XC)
That should give you an output of:
FirstName LastName Age
---------------------------
David Jons 28
Eric Terry 36
Kady Campell 21