cross join:
    final aggregation over ()
        local exchange (GATHER, SINGLE, [])
            remote exchange (GATHER, SINGLE, [])
                partial aggregation over ()
                    join (INNER, PARTITIONED):
                        remote exchange (REPARTITION, HASH, ["ss_customer_sk_13"])
                            join (INNER, REPLICATED):
                                join (INNER, REPLICATED):
                                    join (INNER, REPLICATED):
                                        scan store_sales
                                        local exchange (GATHER, SINGLE, [])
                                            remote exchange (REPLICATE, BROADCAST, [])
                                                scan date_dim (pushdown = true)
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPLICATE, BROADCAST, [])
                                            scan item (pushdown = true)
                                local exchange (GATHER, SINGLE, [])
                                    remote exchange (REPLICATE, BROADCAST, [])
                                        scan store (pushdown = true)
                        local exchange (GATHER, SINGLE, [])
                            remote exchange (REPARTITION, HASH, ["c_customer_sk_93"])
                                join (INNER, PARTITIONED):
                                    remote exchange (REPARTITION, HASH, ["c_current_addr_sk_97"])
                                        scan customer
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPARTITION, HASH, ["ca_address_sk_112"])
                                            scan customer_address (pushdown = true)
    final aggregation over ()
        local exchange (GATHER, SINGLE, [])
            remote exchange (GATHER, SINGLE, [])
                partial aggregation over ()
                    join (INNER, PARTITIONED):
                        remote exchange (REPARTITION, HASH, ["ss_customer_sk"])
                            join (INNER, REPLICATED):
                                join (INNER, REPLICATED):
                                    join (INNER, REPLICATED):
                                        join (INNER, REPLICATED):
                                            scan store_sales
                                            local exchange (GATHER, SINGLE, [])
                                                remote exchange (REPLICATE, BROADCAST, [])
                                                    scan date_dim (pushdown = true)
                                        local exchange (GATHER, SINGLE, [])
                                            remote exchange (REPLICATE, BROADCAST, [])
                                                scan item (pushdown = true)
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPLICATE, BROADCAST, [])
                                            scan store (pushdown = true)
                                local exchange (GATHER, SINGLE, [])
                                    remote exchange (REPLICATE, BROADCAST, [])
                                        scan promotion (pushdown = true)
                        local exchange (GATHER, SINGLE, [])
                            remote exchange (REPARTITION, HASH, ["c_customer_sk"])
                                join (INNER, PARTITIONED):
                                    remote exchange (REPARTITION, HASH, ["c_current_addr_sk"])
                                        scan customer
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPARTITION, HASH, ["ca_address_sk"])
                                            scan customer_address (pushdown = true)
