xml - XPath to get node name based on existence of child node -


i have following nodes:

<resource>     <datafield1>          <label>...</label>          <alert>...</alert>      </datafield1>      <datafield2>          <label>...</label>      </datafield2>      <datafield3>         <label>...</label>         <alert>...</alert>      </datafield3> </resource>

and show name of 1st , 3rd node because exists child node "alert". 

datafield1 datafield3

with following xpath can show nodes:

 //resource/*[alert]

result:

<datafield1>     <label>...</label>     <alert>...</alert> </datafield1> <datafield3>     <label>...</label>     <alert>...</alert> </datafield3>

but not want.

you need add label:

//resource/*[alert]/label

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