text: with ssci as (
  select ss_customer_sk customer_sk
        ,ss_item_sk item_sk
  from store_sales,date_dim
  where ss_sold_date_sk = d_date_sk
    and d_month_seq between 1200 and 1200 + 11
  group by ss_customer_sk
          ,ss_item_sk),
  csci as(
   select cs_bill_customer_sk customer_sk
        ,cs_item_sk item_sk
  from catalog_sales,date_dim
  where cs_sold_date_sk = d_date_sk
    and d_month_seq between 1200 and 1200 + 11
  group by cs_bill_customer_sk
          ,cs_item_sk)
   select  sum(case when ssci.customer_sk is not null and csci.customer_sk is null then 1 else 0 end) store_only
        ,sum(case when ssci.customer_sk is null and csci.customer_sk is not null then 1 else 0 end) catalog_only
        ,sum(case when ssci.customer_sk is not null and csci.customer_sk is not null then 1 else 0 end) store_and_catalog
  from ssci full outer join csci on (ssci.customer_sk=csci.customer_sk
                                 and ssci.item_sk = csci.item_sk)
   limit 100
  