Shredding XML column data into rows in SQL - sql-server

Question

I have an xml value
<ITEMS>
<ITEM><ID>1</ID><NAME>John</NAME></ITEM>
<ITEM><ID>5</ID><NAME>James</NAME></ITEM>
</ITEMS>
I am able to shred the above xml into tables of ID and Name column using the below query
Declare #X xml
select x.r.value('(ID)[1]','int') as [ID],
x.r.value('(DATA)[1]','VARCHAR(100)') AS [DATA]
FROM #X.nodes ('/ITEMS/ITEM') AS x(r)
But how will i able to do this when the above xml is present in a row.
S.No COMPANY DATA
1 ABC </ITEMS><ITEM><ID>1</ID><NAME>John</Name>....
I need to populate like below
S.No COMPANY ID NAME
1 ABC 1 John
2 ABC 5 James
Note : The Data column in the table is of varchar data type and not xml data type.

Answer 1

First, you can use a CTE to convert it to XML data type. Second way is via a derived table.
SQL
-- DDL and sample data population, start
DECLARE #tbl TABLE (SequentialNo INT PRIMARY KEY, Company VARCHAR(20), [DATA] VARCHAR(MAX));
INSERT INTO #tbl (SequentialNo, Company, [DATA])
VALUES
(1, 'ABC', '<ITEMS>
<ITEM>
<ID>1</ID>
<NAME>John</NAME>
</ITEM>
<ITEM>
<ID>5</ID>
<NAME>James</NAME>
</ITEM>
</ITEMS>');
-- DDL and sample data population, end
-- Method #1
-- CTE
;WITH rs AS
(
SELECT *, TRY_CAST([DATA] AS XML) AS [xmldata]
FROM #tbl
)
SELECT SequentialNo
, Company
, col.value('(ID/text())[1]','INT') AS ID
, col.value('(NAME/text())[1]','VARCHAR(40)') AS [Name]
FROM rs AS tbl
CROSS APPLY tbl.[xmldata].nodes('/ITEMS/ITEM') AS tab(col);
-- Method #2
-- Derived table
SELECT SequentialNo
, Company
, col.value('(ID/text())[1]','INT') AS ID
, col.value('(NAME/text())[1]','VARCHAR(40)') AS [Name]
FROM (SELECT *, TRY_CAST([DATA] AS XML) AS [xmldata]
FROM #tbl) AS tbl
CROSS APPLY tbl.[xmldata].nodes('/ITEMS/ITEM') AS tab(col);
Output
+--------------+---------+----+-------+
| SequentialNo | Company | ID | Name |
+--------------+---------+----+-------+
| 1 | ABC | 1 | John |
| 1 | ABC | 5 | James |
+--------------+---------+----+-------+