Question

how can I apply WHERE clause for xpath expressions?
Example:

<users>
    <user>
       <name>membersound</name>
       <age>52</age>
    </user>
    <user>...
</users>

I can check for existence eg:

exists(//ns1:users/ns1:user[ns1:name='membersound'])

How can I do the following?:

SELECT age WHERE name='membersound'

Answer 1

The WHERE clause is already represented by your [ns1:name='membersound'] predicate. To get the age, just append /ns1:age to your XPath expression:

//ns1:users/ns1:user[ns1:name='membersound']/ns1:age