Suppose I have a JPQL query like this:

SELECT p
  FROM Parent p
  LEFT OUTER JOIN p.children child
 WHERE p.children IS EMPTY
    OR child.x = 'y'


I would like Parent instances returned in any of the following cases:


the Parent has no children
the Parent has at least one child whose x is equal to y


According to the JPA specification, should the query above do what I want?  Or must I drag out the EXISTS-and-subquery-and-IN machinery? 


Question: Java read pptx file
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