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/';

View Code

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