SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function sipHash64 (children 1)
     ExpressionList (children 3)
      Function arrayJoin (children 1)
       ExpressionList (children 1)
        Function array (children 1)
         ExpressionList
      Literal Array_[NULL]
      Function arrayJoin (children 1)
       ExpressionList (children 1)
        Literal Array_[\'\', NULL, \'\', NULL]