[jira] [Created] (HIVE-16654) Optimize a combination of avg(), sum(), count(distinct) etc

["Pengcheng Xiong (JIRA)" <ji...@apache.org>]

Pengcheng Xiong created HIVE-16654:
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             Summary: Optimize a combination of avg(), sum(), count(distinct) etc
                 Key: HIVE-16654
                 URL: https://issues.apache.org/jira/browse/HIVE-16654
             Project: Hive
          Issue Type: Bug
            Reporter: Pengcheng Xiong
            Assignee: Pengcheng Xiong


an example rewrite for q28 of tpcds is 
{code}
(select LP as B1_LP ,CNT  as B1_CNT,CNTD as B1_CNTD
      from (select sum(xc0) / sum(xc1) as LP, sum(xc1) as CNT, count(1) as CNTD from (select sum(ss_list_price) as xc0, count(ss_list_price) as xc1 from store_sales  where 
ss_list_price is not null and ss_quantity between 0 and 5
        and (ss_list_price between 11 and 11+10 
             or ss_coupon_amt between 460 and 460+1000
             or ss_wholesale_cost between 14 and 14+20)
 group by ss_list_price) ss0) ss1) B1
{code}



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