local exchange (GATHER, SINGLE, [])
    remote exchange (GATHER, SINGLE, [])
        final aggregation over (i_product_name)
            local exchange (GATHER, SINGLE, [])
                remote exchange (REPARTITION, HASH, [i_product_name])
                    partial aggregation over (i_product_name)
                        join (INNER, REPLICATED):
                            scan item
                            local exchange (GATHER, SINGLE, [])
                                remote exchange (REPLICATE, BROADCAST, [])
                                    final aggregation over (i_manufact_14)
                                        local exchange (GATHER, SINGLE, [])
                                            remote exchange (REPARTITION, HASH, [i_manufact_14])
                                                partial aggregation over (i_manufact_14)
                                                    scan item
