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  select  (case when '1'='1' then KYLIN_CAL_DT.week_beg_dt when '1'='2' then KYLIN_SALES.lstg_site_id else KYLIN_SALES.leaf_categ_id end) as xxx , sum(price) as sum_price
  from KYLIN_SALES
  inner JOIN KYLIN_CAL_DT as KYLIN_CAL_DT
  ON KYLIN_SALES.PART_DT = KYLIN_CAL_DT.cal_dt
  inner JOIN kylin_category_groupings
  ON KYLIN_SALES.leaf_categ_id = kylin_category_groupings.leaf_categ_id AND KYLIN_SALES.lstg_site_id = kylin_category_groupings.site_id

  
  where case when '1'='1' then KYLIN_SALES.PART_DT < date'2012-04-01' when '1'='2' then  KYLIN_CAL_DT.week_beg_dt > date'2012-04-01' else  KYLIN_SALES.lstg_site_id is not null end and lstg_format_name='FP-GTC'
  
  group by case when '1'='1' then KYLIN_CAL_DT.week_beg_dt when '1'='2' then KYLIN_SALES.lstg_site_id else KYLIN_SALES.leaf_categ_id end
 
