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  1. Hive
  2. HIVE-16654

Optimize a combination of avg(), sum(), count(distinct) etc

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0
    • Fix Version/s: 3.0.0
    • Component/s: None
    • Labels:
      None

      Description

      an example rewrite for q28 of tpcds is

      (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
      

        Attachments

        1. HIVE-16654.04.patch
          207 kB
          Pengcheng Xiong
        2. HIVE-16654.03.patch
          186 kB
          Pengcheng Xiong
        3. HIVE-16654.02.patch
          217 kB
          Pengcheng Xiong
        4. HIVE-16654.01.patch
          72 kB
          Pengcheng Xiong

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              • Assignee:
                pxiong Pengcheng Xiong
                Reporter:
                pxiong Pengcheng Xiong
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                Dates

                • Created:
                  Updated:
                  Resolved: