SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayElement (children 1)
     ExpressionList (children 2)
      Function materialize (children 1)
       ExpressionList (children 1)
        Function array (children 1)
         ExpressionList (children 2)
          Function array (children 1)
           ExpressionList (children 1)
            Function toNullable (children 1)
             ExpressionList (children 1)
              Literal UInt64_13
          Literal Array_[UInt64_14]
      Literal Int64_-9223372036854775808
