Effectuer des sommes cummulées
Les sommes cummulées sont un besoin
Hhfglsùù#
select
*,
sum(pct_sales_amount) over (order by sales_amount desc) cum_pct_sales_amount
from (
select customer_id, sales_amount, sales_amount / sum(sales_amount) over () pct_sales_amount
from public.sales_day
) foo
order by pct_sales_amount desc
.