大数据实战（五十九）：电商数仓（四十二）之系统业务数据仓库（十五）商品每日销量排行Top10

1 DWS层

使用用户购买商品明细宽表作为DWS数据

2 ADS层

2.1 建表语句

drop table if exists ads_goods_order_count_day;
create external table ads_goods_order_count_day(   
    dt string comment '统计日期',
    sku_id   string  comment '商品id',
    order_count bigint comment '下单次数'
) COMMENT '商品下单top10'
stored as parquet
location '/warehouse/gmall/dws/ads_goods_order_count_day/';

2.2 导入数据

-----------------------------需求-商品每日下单排行Top10----------------------
-----------------------------相关表---------------------
dws_sale_detail_daycount: 每个用户每天的购买的商品明细
-----------------------------思路-----------------------
求今日的销售明细，按商品分组，统计数量，排序取前十
-----------------------------SQL------------------------
insert into TABLE ads_goods_order_count_day
select
'2020-02-16',sku_id,count(*) order_count
from dws_sale_detail_daycount
where dt='2020-02-16'
group by sku_id
order by order_count desc
limit 10

标签：商数,count,goods,ads,Top10,数据仓库,商品,sku,order
来源： https://www.cnblogs.com/qiu-hua/p/13548944.html