local exchange (GATHER, SINGLE, [])
    remote exchange (GATHER, SINGLE, [])
        final aggregation over (i_current_price, i_item_desc, i_item_id)
            local exchange (GATHER, SINGLE, [])
                remote exchange (REPARTITION, HASH, ["i_current_price", "i_item_desc", "i_item_id"])
                    partial aggregation over (i_current_price, i_item_desc, i_item_id)
                        join (INNER, REPLICATED):
                            scan store_sales
                            local exchange (GATHER, SINGLE, [])
                                remote exchange (REPLICATE, BROADCAST, [])
                                    join (INNER, REPLICATED):
                                        join (INNER, REPLICATED):
                                            scan inventory
                                            local exchange (GATHER, SINGLE, [])
                                                remote exchange (REPLICATE, BROADCAST, [])
                                                    scan item
                                        local exchange (GATHER, SINGLE, [])
                                            remote exchange (REPLICATE, BROADCAST, [])
                                                scan date_dim
