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  • 取排名前50%的数据

     1     SELECT
     2         goods_id,
     3         mall_id,
     4         gmv
     5     FROM(
     6         SELECT
     7             goods_id,
     8             mall_id,
     9             gmv,
    10             dense_rank() over (partition by mall_id order by gmv desc ) as dr_desc,
    11             dense_rank() over (partition by mall_id order by gmv ) as dr_asc
    12         FROM(
    13             SELECT
    14                 goods_id,
    15                 mall_id,
    16                 SUM(amt) as gmv
    17             FROM
    18                 table
    19             WHERE
    20                 pt <= '2021-05-01'
    21                 AND pt > date_sub('2021-05-01',7)
    22             GROUP BY 
    23                 goods_id,
    24                 mall_id
    25             HAVING
    26                 SUM(amt) > 0
    27             )t11 
    28         )t12 
    29     WHERE
    30         dr_desc >= (dr_asc+dr_desc)/2    ---- 取gmv排序前50%的品
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  • 原文地址:https://www.cnblogs.com/pengpenghuhu/p/14791684.html
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