--q9.sql--

select case when (select count(*) from store_sales
                  where ss_quantity between 1 and 20) > 74129
            then (select avg(ss_ext_discount_amt) from store_sales
                  where ss_quantity between 1 and 20)
            else (select avg(ss_net_paid) from store_sales
                  where ss_quantity between 1 and 20) end bucket1 ,
       case when (select count(*) from store_sales
                  where ss_quantity between 21 and 40) > 122840
            then (select avg(ss_ext_discount_amt) from store_sales
                  where ss_quantity between 21 and 40)
            else (select avg(ss_net_paid) from store_sales
                  where ss_quantity between 21 and 40) end bucket2,
       case when (select count(*) from store_sales
                  where ss_quantity between 41 and 60) > 56580
            then (select avg(ss_ext_discount_amt) from store_sales
                  where ss_quantity between 41 and 60)
            else (select avg(ss_net_paid) from store_sales
                  where ss_quantity between 41 and 60) end bucket3,
       case when (select count(*) from store_sales
                  where ss_quantity between 61 and 80) > 10097
            then (select avg(ss_ext_discount_amt) from store_sales
                  where ss_quantity between 61 and 80)
            else (select avg(ss_net_paid) from store_sales
                  where ss_quantity between 61 and 80) end bucket4,
       case when (select count(*) from store_sales
                  where ss_quantity between 81 and 100) > 165306
            then (select avg(ss_ext_discount_amt) from store_sales
                  where ss_quantity between 81 and 100)
            else (select avg(ss_net_paid) from store_sales
                  where ss_quantity between 81 and 100) end bucket5
from reason
where r_reason_sk = 1;