comphead commented on issue #901:
URL:
https://github.com/apache/datafusion-comet/issues/901#issuecomment-2332866179
Im running slightly changed Q72 in DF
```
select i_item_desc
,w_warehouse_name
,d1.d_week_seq
,sum(case when p_promo_sk is null then 1 else 0 end) no_promo
,sum(case when p_promo_sk is not null then 1 else 0 end) promo
,count(*) total_cnt
from catalog_sales
join date_dim d1 on (cs_sold_date_sk = d1.d_date_sk)
join customer_demographics on (cs_bill_cdemo_sk = cd_demo_sk)
join household_demographics on (cs_bill_hdemo_sk = hd_demo_sk)
join item on (i_item_sk = cs_item_sk)
join inventory on (cs_item_sk = inv_item_sk)
join warehouse on (w_warehouse_sk=inv_warehouse_sk)
join date_dim d2 on (inv_date_sk = d2.d_date_sk)
join date_dim d3 on (cs_ship_date_sk = d3.d_date_sk)
left outer join promotion on (cs_promo_sk=p_promo_sk)
left outer join catalog_returns on (cr_item_sk = cs_item_sk and
cr_order_number = cs_order_number)
where d1.d_week_seq = d2.d_week_seq
and inv_quantity_on_hand < cs_quantity
and d3.d_date > d1.d_date + interval '5' day
and d1.d_year = 1999
group by i_item_desc,w_warehouse_name,d1.d_week_seq
order by total_cnt desc, i_item_desc, w_warehouse_name, d_week_seq
LIMIT 100
```
HashJoin - 9sec, SMJ - 20 sec
Having LEFT OUTER joins removed the results are still the same
HashJoin - 8.5 SMJ - 19 sec
I'll build a flamegraph for SMJ soon
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