Hive综合案例练习（中级）第三十二题：某周内每件商品每天销售情况

某周内每件商品每天销售情况

题目需求

从订单详情表（order_detail）中查询2021年9月27号-2021年10月3号这一周所有商品每天销售情况。

结果如下：

| Sku_id

（商品id）	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
1	0	0	9	8	0	4	2
10	0	0	0	0	48	69	0
11	0	0	0	0	15	61	0
12	0	0	43	0	31	20400	0
2	0	0	0	18	5800	0	0
3	0	0	0	6	0	1	5
4	9	0	0	8	1	5	0
5	33	0	0	0	24	47	0
6	0	0	0	1	5	8	0
7	0	37	0	17	0	20	0
8	0	46	0	48	39	0	0
9	0	12	0	45	0	0	0

代码实现

select
    sku_id,
    sum(if(`dayofweek`(create_date)=2,sku_num,0)) Monday,
    sum(if(`dayofweek`(create_date)=3,sku_num,0)) Tuesday,
    sum(if(`dayofweek`(create_date)=4,sku_num,0)) Wednesday,
    sum(if(`dayofweek`(create_date)=5,sku_num,0)) Thursday,
    sum(if(`dayofweek`(create_date)=6,sku_num,0)) Friday,
    sum(if(`dayofweek`(create_date)=7,sku_num,0)) Saturday,
    sum(if(`dayofweek`(create_date)=1,sku_num,0)) Sunday
from 
    order_detail
where
    create_date >= '2021-09-27' and create_date < '2021-10-03'
group by
    sku_id;