dwd_fact_order_detail

订单明细事实表

属于周期型快照事实表

类似的有支付事实表，退款事实表，评价事实表

-- 建表
drop table if exists dwd_fact_order_detail; 
create external table dwd_fact_order_detail 
( 
    `id` string COMMENT '订单编号', 
    `order_id` string COMMENT '订单号', 
    `user_id` string COMMENT '用户 id', 
    `sku_id` string COMMENT 'sku 商品 id', 
    `sku_name` string COMMENT '商品名称', 
    `order_price` decimal(10,2) COMMENT '商品价格', 
    `sku_num` bigint COMMENT '商品数量', 
    `create_time` string COMMENT '创建时间', 
    `province_id` string COMMENT '省份 ID', 
    `total_amount` decimal(20,2) COMMENT '订单总金额' )
PARTITIONED BY (`dt` string) 
stored as parquet 
location '/warehouse/gmall/dwd/dwd_fact_order_detail/' 
tblproperties ("parquet.compression"="lzo");


-- 插入
insert overwrite table dwd_fact_order_detail 
partition(dt='2020-03-10') 
select 
    od.id, 
    od.order_id, 
    od.user_id, 
    od.sku_id, 
    od.sku_name, 
    od.order_price, 
    od.sku_num, 
    od.create_time, 
    oi.province_id, 
    od.order_price*od.sku_num 
from 
( 
    select * from ods_order_detail 
    where dt='2020-03-10' 
) od 
join 
(
    select * from ods_order_info 
    where dt='2020-03-10'
) oi 
on od.order_id=oi.id;