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