SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function URLHash (children 1)
       ExpressionList (children 2)
        Literal \'\' (alias url)
        Literal UInt64_1
      Function URLHash (children 1)
       ExpressionList (children 1)
        Identifier url