SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 4)
    Identifier part_name
    Identifier mark_number
    Identifier rows_in_granule
    Identifier a
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function mergeTreeIndex (children 1)
       ExpressionList (children 2)
        Function currentDatabase (children 1)
         ExpressionList
        Identifier t_index_lazy_load
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier part_name
    OrderByElement (children 1)
     Identifier mark_number
