text: -- start query 39 in stream 0 using template query39.tpl
  
  with inv as
  (select w_warehouse_name,w_warehouse_sk,i_item_sk,d_moy
         ,stdev,mean, case mean when 0 then null else stdev/mean end cov
   from(select w_warehouse_name,w_warehouse_sk,i_item_sk,d_moy
              ,stddev_samp(inv_quantity_on_hand) stdev,avg(inv_quantity_on_hand) mean
        from inventory
            ,item
            ,warehouse
            ,date_dim
        where inv_item_sk = i_item_sk
          and inv_warehouse_sk = w_warehouse_sk
          and inv_date_sk = d_date_sk
          and d_year =1998
        group by w_warehouse_name,w_warehouse_sk,i_item_sk,d_moy) foo
   where case mean when 0 then 0 else stdev/mean end > 1)
  select inv1.w_warehouse_sk,inv1.i_item_sk,inv1.d_moy,inv1.mean, inv1.cov
          ,inv2.w_warehouse_sk,inv2.i_item_sk,inv2.d_moy,inv2.mean, inv2.cov
  from inv inv1,inv inv2
  where inv1.i_item_sk = inv2.i_item_sk
    and inv1.w_warehouse_sk =  inv2.w_warehouse_sk
    and inv1.d_moy=1
    and inv2.d_moy=1+1
    and inv1.cov > 1.5
  order by inv1.w_warehouse_sk,inv1.i_item_sk,inv1.d_moy,inv1.mean,inv1.cov
          ,inv2.d_moy,inv2.mean, inv2.cov
  
  
  -- end query 39 in stream 0 using template query39.tpl
  