Different resoult query SQL and XPath

[Łukasz Sroka]

Hi
I have SQL query :
select * from nt:unstructured where jcr:path like '%/childNode0Level1'
and XPath :
//GUI//childNode0Level1
My repository :
root
|->jcr:system
|->GUI
        |->new.xml
new.xml look :
<rootElement>
  <childNode0Level1>
      <childNode0Level2>
      </childNode0Level2>
  </childNode0Level1>
<childNode1Level1>
      <childNode0Level2>
      </childNode0Level2>
  </childNode1Level1>
  <childNode0Level1>
      <childNode0Level2>
      </childNode0Level2>
  </childNode0Level1>
</rootElement>

And the problem is different result returned  by  XPath and SQL. XPath  
find  2 childNode0Level1 and SQL only 1. Why?