SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Literal UInt64_1 (alias max_size)
   ExpressionList (children 1)
    Function groupArray (children 2)
     ExpressionList (children 1)
      Identifier col
     ExpressionList (children 1)
      Identifier max_size
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 1)
           Identifier col
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Subquery (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 2)
                SelectQuery (children 1)
                 ExpressionList (children 1)
                  Literal UInt64_1 (alias col)
                SelectQuery (children 1)
                 ExpressionList (children 1)
                  Literal UInt64_2
          ExpressionList (children 1)
           OrderByElement (children 1)
            Identifier col
