remote exchange (GATHER, SINGLE, [])
    local exchange (GATHER, UNKNOWN, [])
        remote exchange (REPARTITION, ROUND_ROBIN, [])
            join (INNER, PARTITIONED):
                join (INNER, PARTITIONED):
                    join (INNER, PARTITIONED):
                        final hashaggregation over (ca_county_77, d_qoy_51, d_year_47)
                            local exchange (GATHER, SINGLE, [])
                                remote exchange (REPARTITION, HASH, ["ca_county_77", "d_qoy_51", "d_year_47"])
                                    partial hashaggregation over (ca_county_77, d_qoy_51, d_year_47)
                                        join (INNER, PARTITIONED):
                                            remote exchange (REPARTITION, HASH, ["ss_addr_sk_23"])
                                                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 (REPARTITION, HASH, ["ca_address_sk_70"])
                                                    scan customer_address
                        local exchange (GATHER, SINGLE, [])
                            remote exchange (REPARTITION, HASH, ["ca_county_164", NullableValue{type=integer, value=2000}, NullableValue{type=integer, value=2}])
                                final hashaggregation over (ca_county_164, d_qoy_138, d_year_134)
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPARTITION, HASH, ["ca_county_164", "d_qoy_138", "d_year_134"])
                                            partial hashaggregation over (ca_county_164, d_qoy_138, d_year_134)
                                                join (INNER, PARTITIONED):
                                                    remote exchange (REPARTITION, HASH, ["ss_addr_sk_110"])
                                                        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 (REPARTITION, HASH, ["ca_address_sk_157"])
                                                            scan customer_address
                    join (INNER, PARTITIONED):
                        final hashaggregation over (ca_county_326, d_qoy_300, d_year_296)
                            local exchange (GATHER, SINGLE, [])
                                remote exchange (REPARTITION, HASH, ["ca_county_326", "d_qoy_300", "d_year_296"])
                                    partial hashaggregation over (ca_county_326, d_qoy_300, d_year_296)
                                        join (INNER, PARTITIONED):
                                            remote exchange (REPARTITION, HASH, ["ws_bill_addr_sk_262"])
                                                join (INNER, REPLICATED):
                                                    scan web_sales
                                                    local exchange (GATHER, SINGLE, [])
                                                        remote exchange (REPLICATE, BROADCAST, [])
                                                            scan date_dim (pushdown = true)
                                            local exchange (GATHER, SINGLE, [])
                                                remote exchange (REPARTITION, HASH, ["ca_address_sk_319"])
                                                    scan customer_address
                        local exchange (GATHER, SINGLE, [])
                            remote exchange (REPARTITION, HASH, ["ca_county_424", NullableValue{type=integer, value=2000}, NullableValue{type=integer, value=2}])
                                final hashaggregation over (ca_county_424, d_qoy_398, d_year_394)
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPARTITION, HASH, ["ca_county_424", "d_qoy_398", "d_year_394"])
                                            partial hashaggregation over (ca_county_424, d_qoy_398, d_year_394)
                                                join (INNER, PARTITIONED):
                                                    remote exchange (REPARTITION, HASH, ["ws_bill_addr_sk_360"])
                                                        join (INNER, REPLICATED):
                                                            scan web_sales
                                                            local exchange (GATHER, SINGLE, [])
                                                                remote exchange (REPLICATE, BROADCAST, [])
                                                                    scan date_dim (pushdown = true)
                                                    local exchange (GATHER, SINGLE, [])
                                                        remote exchange (REPARTITION, HASH, ["ca_address_sk_417"])
                                                            scan customer_address
                local exchange (GATHER, SINGLE, [])
                    remote exchange (REPARTITION, HASH, ["ca_county", NullableValue{type=integer, value=2000}, NullableValue{type=integer, value=2}])
                        join (INNER, PARTITIONED):
                            final hashaggregation over (ca_county, d_qoy, d_year)
                                local exchange (GATHER, SINGLE, [])
                                    remote exchange (REPARTITION, HASH, ["ca_county", "d_qoy", "d_year"])
                                        partial hashaggregation over (ca_county, d_qoy, d_year)
                                            join (INNER, PARTITIONED):
                                                remote exchange (REPARTITION, HASH, ["ss_addr_sk"])
                                                    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 (REPARTITION, HASH, ["ca_address_sk"])
                                                        scan customer_address
                            final hashaggregation over (ca_county_228, d_qoy_202, d_year_198)
                                local exchange (GATHER, SINGLE, [])
                                    remote exchange (REPARTITION, HASH, ["ca_county_228", "d_qoy_202", "d_year_198"])
                                        partial hashaggregation over (ca_county_228, d_qoy_202, d_year_198)
                                            join (INNER, PARTITIONED):
                                                remote exchange (REPARTITION, HASH, ["ws_bill_addr_sk"])
                                                    join (INNER, REPLICATED):
                                                        scan web_sales
                                                        local exchange (GATHER, SINGLE, [])
                                                            remote exchange (REPLICATE, BROADCAST, [])
                                                                scan date_dim (pushdown = true)
                                                local exchange (GATHER, SINGLE, [])
                                                    remote exchange (REPARTITION, HASH, ["ca_address_sk_221"])
                                                        scan customer_address
