MySql query to retrieve value of element attribute of xml

Question

I have mysql table (say TestSuite), holding xml content (although as long text) in TestSuiteDefinition column,

 <test_suite id="368">
   <name>TestSuite1</name>
   <description>TestSuite</description>
   <test_case id="141" version="" />
   <test_case id="142" version="" />
   <test_case id="143" version="" />
   <test_case id="144" version="" />
</test_suite>

now, I want to retrieve the value of attributes ("id" in this case). I know how to do it in MS SQL e.g:

SELECT TestSuiteDefinition.query('data(/test_suite/test_case/@id)') as name FROM TestSuite WHERE TestSuiteId='368'

But not able to figure it out in MySQL. Note: Tried MySQL function ExtractValue() but no success on retrieving element attributes. Thanks

SELECT ExtractValue('','/test_case[@id]') as name FROM TestSuite WHERE TestCaseId=''368" — Chirag Dhyani, Mar 30 '15 at 09:56

Mike Miller · Answer 1 · 2015-03-30T10:42:16.870

2

I haven't tested this but give this a try

SELECT ExtractValue(TestSuiteDefinition,'/test_case[1]/@id') as name FROM TestSuite WHERE TestCaseId=''368"

This will get you the first one back. You will need to do multiple ExtractValue calls to get each attribute back I think

edited Mar 30 '15 at 10:42

answered Mar 30 '15 at 10:11

Mike Miller

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Thank for the effort Mike. but here I am trying to retrieve attribute value instead of node values. So the query should return 141 142 143 144 – Chirag Dhyani Mar 30 '15 at 10:20
Updated the answer- also untested as I am on my phone but should be pretty close – Mike Miller Mar 30 '15 at 10:42

score 2 · Accepted Answer · answered Mar 30 '15 at 10:42

$rows = $mysqli->query(<<<EOQ
    SELECT ExtractValue(TestSuiteDefinition,'//test_case/@id') as name
    FROM   TestSuite
    WHERE  TestCaseId=368
EOQ
) or die($mysqli->error);

print_r($rows->fetch_all());

Output:

Array
(
    [0] => Array
        (
            [0] => 141 142 143 144
        )

)

MySql query to retrieve value of element attribute of xml

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