How to shred XML with TSQL XQUERY - sql-server

Question

I'm struggling to shred the following XML. I'm using Azure SQL database.
Here's my sample data and code attempt.
DROP TABLE IF EXISTS #t ;
CREATE TABLE #t (XMLResult XML) ;
INSERT INTO #t (XMLResult)
VALUES ( '<testsuites>
<testsuite id="1" name="Verify" tests="1" errors="0" failures="1" timestamp="2021-12-08" time="0.000" hostname="" package="tSQLt">
<properties />
<testcase classname="Verify" name="Verify [Feature].[measure] format" time="0.000">
<failure message="Format incorrectly set." type="Failure" />
</testcase>
</testsuite>
</testsuites>
') ;
SELECT T.* ,
TS.H.value('name[1]', 'varchar(255)') AS [Test Method] ,
TS.H.value('tests[1]', 'int') AS [Tests] ,
TS.H.value('failures[1]', 'int') AS [Failures] ,
TC.H.value('name[1]', 'VARCHAR(255)') AS [TestCase] ,
TF.H.value('message[1]', 'VARCHAR(255)') AS [Failure Message]
FROM #t T
CROSS APPLY T.XMLResult.nodes('/testsuites/testsuite') AS TS(H)
CROSS APPLY T.XMLResult.nodes('/testsuites/testsuite/testcase') AS TC(H)
CROSS APPLY T.XMLResult.nodes('/testsuites/testsuite/testcase/failure') AS TF(H)
;
Current output
Where am I going wrong?

Answer 1

As mentioned in the comments, you have XML attributes, not values, which you are trying to retrieve. So you need to reference them with #
You are also using .nodes wrong: you should refer each one to the previous one. As it is, you are just cross-joining all the node levels together.
SELECT --T.* ,
TS.H.value('#name', 'varchar(255)') AS [Test Method] ,
TS.H.value('#tests', 'int') AS [Tests] ,
TS.H.value('#failures', 'int') AS [Failures] ,
TC.H.value('#name', 'VARCHAR(255)') AS [TestCase] ,
TF.H.value('#message', 'VARCHAR(255)') AS [Failure Message]
FROM #t T
CROSS APPLY T.XMLResult.nodes('/testsuites/testsuite') AS TS(H)
CROSS APPLY TS.H.nodes('testcase') AS TC(H)
CROSS APPLY TC.H.nodes('failure') AS TF(H)
;
Note that if you are referring directly to an attribute of the current node (rather than a child node), you do not need the [1] predicate
db<>fiddle