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with v1 as(
select i_category, i_brand,
cc_name,
d_year, d_moy,
sum(cs_sales_price) sum_sales,
avg(sum(cs_sales_price)) over
(partition by i_category, i_brand,
cc_name, d_year)
avg_monthly_sales,
rank() over
(partition by i_category, i_brand,
cc_name
order by d_year, d_moy) rn
from item, catalog_sales, date_dim, call_center
where cs_item_sk = i_item_sk and
cs_sold_date_sk = d_date_sk and
cc_call_center_sk= cs_call_center_sk and
(
d_year = 1999 or
( d_year = 1999-1 and d_moy =12) or
( d_year = 1999+1 and d_moy =1)
)
group by i_category, i_brand,
cc_name , d_year, d_moy),
v2 as(
select v1.i_category, v1.i_brand, v1.cc_name
,v1.d_year, v1.d_moy
,v1.avg_monthly_sales
,v1.sum_sales, v1_lag.sum_sales psum, v1_lead.sum_sales nsum
from v1, v1 v1_lag, v1 v1_lead
where v1.i_category = v1_lag.i_category and
v1.i_category = v1_lead.i_category and
v1.i_brand = v1_lag.i_brand and
v1.i_brand = v1_lead.i_brand and
v1. cc_name = v1_lag. cc_name and
v1. cc_name = v1_lead. cc_name and
v1.rn = v1_lag.rn + 1 and
v1.rn = v1_lead.rn - 1)
select *
from v2
where d_year = 1999 and
avg_monthly_sales > 0 and
case when avg_monthly_sales > 0 then abs(sum_sales - avg_monthly_sales) / avg_monthly_sales else null end > 0.1
order by sum_sales - avg_monthly_sales, 3
limit 100
