SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function maxDistinctState (children 1)
       ExpressionList (children 1)
        Function tuple (children 1)
         ExpressionList (children 2)
          Literal \'str\'
          Literal Array_[\'str\']
