视频地址：尚硅谷大数据项目《在线教育之离线数仓》_哔哩哔哩_bilibili
目录
第9章 数仓开发之DWD层
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第9章 数仓开发之DWD层
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第9章 数仓开发之DWD层
DWD层设计要点：
（1）DWD层的设计依据是维度建模理论，该层存储维度模型的事实表。
（2）DWD层的数据存储格式为orc列式存储+snappy压缩。
（3）DWD层表名的命名规范为dwd_数据域_表名_单分区增量全量标识（inc/full）。
-- 9.1 交易域加购事务事实表
DROP TABLE IF EXISTS dwd_trade_cart_add_inc;
CREATE EXTERNAL TABLE dwd_trade_cart_add_inc
(
`id` STRING COMMENT '编号',
`user_id` STRING COMMENT '用户id',
`course_id` STRING COMMENT '课程id',
`date_id` STRING COMMENT '时间id',
`session_id` STRING COMMENT '会话id',
`create_time` STRING COMMENT '加购时间',
`cart_price` DECIMAL(16, 2) COMMENT '加购时价格'
) COMMENT '交易域加购事务事实表'
PARTITIONED BY (`dt` STRING)
STORED AS ORC
LOCATION '/warehouse/edu/dwd/dwd_trade_cart_add_inc/'
TBLPROPERTIES ('orc.compress' = 'snappy');
select *
from edu2077.ods_cart_info_full;
select *
from edu2077.ods_cart_info_inc;
select data.id,
data.user_id,
data.course_id,
data.date_id,
data.session_id,
data.create_time,
data.cart_price
from edu2077.ods_cart_info_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert';
set hive.exec.dynamic.partition.mode=nonstrict;--关闭严格模式
insert overwrite table edu2077.dwd_trade_cart_add_inc
select data.id,
data.user_id,
data.course_id,
date_format(data.create_time, 'yyyy-MM-dd') date_id,
data.session_id,
data.create_time,
data.cart_price,
date_format(data.create_time, 'yyyy-MM-dd') dt
from edu2077.ods_cart_info_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert';
insert overwrite table edu2077.dwd_trade_cart_add_inc partition (dt = '2022-02-21')
select data.id,
data.user_id,
data.course_id,
date_format(data.create_time, 'yyyy-MM-dd') date_id,
data.session_id,
data.create_time,
data.cart_price
from edu2077.ods_cart_info_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert';
select *
from dwd_trade_cart_add_inc;
--每日装载
insert overwrite table edu2077.dwd_trade_cart_add_inc partition (dt = '2022-02-22')
select data.id,
data.user_id,
data.course_id,
date_format(data.create_time, 'yyyy-MM-dd') date_id,
data.session_id,
data.create_time,
data.cart_price
from edu2077.ods_cart_info_inc
where dt = '2022-02-22'
and type = 'insert';P050
-- 9.2 交易域加购周期快照事实表
DROP TABLE IF EXISTS dwd_trade_cart_full;
CREATE EXTERNAL TABLE dwd_trade_cart_full
(
`id` STRING COMMENT '编号',
`user_id` STRING COMMENT '用户id',
`course_id` STRING COMMENT '课程id',
`date_id` STRING COMMENT '时间id',
`session_id` STRING COMMENT '会话id',
`course_name` STRING COMMENT '课程名称',
`create_time` STRING COMMENT '加购时间',
`cart_price` DECIMAL(16, 2) COMMENT '加购时价格'
) COMMENT '交易域加购周期快照事实表'
PARTITIONED BY (`dt` STRING)
STORED AS ORC
LOCATION '/warehouse/edu/dwd/dwd_trade_cart_full/'
TBLPROPERTIES ('orc.compress' = 'snappy');
select * from ods_cart_info_full
where dt = '2022-02-21';
--数据装载
insert overwrite table edu2077.dwd_trade_cart_full partition (dt = '2022-02-21')
select id,
user_id,
course_id,
date_format(create_time, 'yyyy-MM-dd'),
session_id,
course_name,
create_time,
cart_price
from edu2077.ods_cart_info_full
where dt = '2022-02-21'
and deleted = '0'
and sold = '0';
select * from dwd_trade_cart_full;P051
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--9.3 交易域试听下单累积快照事实表
DROP TABLE IF EXISTS dwd_trade_course_order_inc;
CREATE EXTERNAL TABLE dwd_trade_course_order_inc
(
`id` STRING COMMENT '编号',
`user_id` STRING COMMENT '用户id',
`course_id` STRING COMMENT '课程id',
`course_name` STRING COMMENT '课程名称',
`category_id` STRING COMMENT '分类id',
`category_name` STRING COMMENT '分类名称',
`subject_id` STRING COMMENT '科目id',
`subject_name` STRING COMMENT '科目名称',
`order_id` STRING COMMENT '订单id',
`province_id` STRING COMMENT '省份id',
`play_time` STRING COMMENT '首次播放时间',
`play_date` STRING COMMENT '首次播放日期',
`order_time` STRING COMMENT '首次下单时间',
`order_date` STRING COMMENT '首次下单日期',
`end_date` STRING COMMENT '结束日期,试听后七天内未下单即为结束,试听日期+7为结束日期',
`session_id` STRING COMMENT '会话id',
`original_amount` DECIMAL(16, 2) COMMENT '原始金额分摊',
`coupon_reduce_amount` DECIMAL(16, 2) COMMENT '优惠金额分摊',
`final_amount` DECIMAL(16, 2) COMMENT '最终价格分摊'
) COMMENT '交易域试听下单累积快照事实表'
PARTITIONED BY (`dt` STRING)
STORED AS ORC
LOCATION '/warehouse/edu/dwd/dwd_trade_course_order_inc/'
TBLPROPERTIES ('orc.compress' = 'snappy');
set hive.exec.dynamic.partition.mode=nonstrict;--关闭严格模式
select * from ods_user_chapter_process_full;
select * from edu2077.ods_order_info_inc;
--（1）首日装载
with play as
(
select min(id) id,
user_id,
course_id,
min(create_time) play_time,
date_format(min(create_time), 'yyyy-MM-dd') play_date
from edu2077.ods_user_chapter_process_full
where dt = '2022-02-21'
group by user_id, course_id
),
oi as
(
select data.id,
data.province_id,
data.session_id
from edu2077.ods_order_info_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert'
),
od as
(
select data.id,
data.course_id,
data.order_id,
data.user_id,
data.origin_amount,
data.coupon_reduce,
data.final_amount,
data.create_time order_time,
date_format(data.create_time, 'yyyy-MM-dd') order_date
from edu2077.ods_order_detail_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert'
),
dim_course as (
select id,
course_name,
category_id,
category_name,
subject_id,
subject_name
from edu2077.dim_course_full
where dt = '2022-02-21'
)
insert
overwrite
table
edu2077.dwd_trade_course_order_inc
partition
(
dt
)
select final.id,
user_id,
course_id,
course_name,
category_id,
category_name,
subject_id,
subject_name,
order_id,
province_id,
play_time,
play_date,
order_time,
order_date,
end_date,
session_id,
origin_amount,
coupon_reduce,
final_amount,
case
when end_date is not null then end_date
when order_date is not null then order_date
else '9999-12-31' end dt
from (select play.id,
play.user_id,
play.course_id,
od.order_id,
oi.province_id,
play.play_time,
play.play_date,
od.order_time,
od.order_date,
if(od.order_date is null and
date_add(play.play_date, 7) <= '2022-02-21',
date_add(play.play_date, 7), null) end_date,
oi.session_id,
od.origin_amount,
od.coupon_reduce,
od.final_amount
from play
left join od on play.user_id = od.user_id and play.course_id = od.course_id
left join oi on od.order_id = oi.id
where od.order_time is null
or od.order_time > play.play_time
) final
left join dim_course on course_id = dim_course.id;
select * from dwd_trade_course_order_inc;P054
--9.3 交易域试听下单累积快照事实表
--（2）每日装载
set hive.exec.dynamic.partition.mode=nonstrict;
with play as
(select id,
user_id,
course_id,
play_time,
play_date
from edu2077.dwd_trade_course_order_inc
where dt = '9999-12-31'
union
select min(id) id,
user_id,
course_id,
min(create_time),
date_format(min(create_time), 'yyyy-MM-dd') play_date
from edu2077.ods_user_chapter_process_full
where dt = '2022-02-22'
group by user_id, course_id
having date_format(min(create_time), 'yyyy-MM-dd') = '2022-02-22'),
oi as
(
select data.id,
data.province_id,
data.session_id,
data.create_time order_time
from edu2077.ods_order_info_inc
where dt = '2022-02-22'
and type = 'insert'
),
od as
(
select data.id,
data.course_id,
data.order_id,
data.user_id,
data.origin_amount,
data.coupon_reduce,
data.final_amount,
date_format(data.create_time, 'yyyy-MM-dd') order_date
from edu2077.ods_order_detail_inc
where dt = '2022-02-22'
and type = 'insert'
),
dim_course as
(
select id,
course_name,
category_id,
category_name,
subject_id,
subject_name
from edu2077.dim_course_full
where dt = '2022-02-22'
)
insert
overwrite
table
edu2077.dwd_trade_course_order_inc
partition
(
dt
)
select final.id,
user_id,
course_id,
course_name,
category_id,
category_name,
subject_id,
subject_name,
order_id,
province_id,
play_time,
play_date,
order_time,
order_date,
end_date,
session_id,
origin_amount,
coupon_reduce,
final_amount,
case
when end_date is not null then end_date
when order_date is not null then order_date
else '9999-12-31' end dt
from (select play.id,
play.user_id,
play.course_id,
od.order_id,
oi.province_id,
play.play_time,
play.play_date,
oi.order_time,
od.order_date,
if(order_date is null and date_add(play_date, 7) = '2022-02-22', '2022-02-22', null) end_date,
oi.session_id,
od.origin_amount,
od.coupon_reduce,
od.final_amount
from play
left join od on play.user_id = od.user_id and play.course_id = od.course_id
left join oi on od.order_id = oi.id
where order_time is null
or order_time > play_time
) final
left join dim_course on course_id = dim_course.id;P055
--9.4 交易域下单事务事实表
DROP TABLE IF EXISTS dwd_trade_order_detail_inc;
CREATE EXTERNAL TABLE dwd_trade_order_detail_inc
(
`id` STRING COMMENT '编号',
`order_id` STRING COMMENT '订单id',
`user_id` STRING COMMENT '用户id',
`course_id` STRING COMMENT '课程id',
`course_name` STRING COMMENT '课程名称',
`category_id` STRING COMMENT '分类id',
`category_name` STRING COMMENT '分类名称',
`subject_id` STRING COMMENT '科目id',
`subject_name` STRING COMMENT '科目名称',
`province_id` STRING COMMENT '省份id',
`date_id` STRING COMMENT '下单日期id',
`session_id` STRING COMMENT '会话id',
`source_id` STRING COMMENT '来源id',
`create_time` STRING COMMENT '下单时间',
`original_amount` DECIMAL(16, 2) COMMENT '原始金额分摊',
`coupon_reduce_amount` DECIMAL(16, 2) COMMENT '优惠金额分摊',
`final_amount` DECIMAL(16, 2) COMMENT '最终价格分摊',
`out_trade_no` STRING COMMENT '订单交易编号',
`trade_body` STRING COMMENT '订单描述'
) COMMENT '交易域下单事务事实表'
PARTITIONED BY (`dt` STRING)
STORED AS ORC
LOCATION '/warehouse/edu/dwd/dwd_trade_order_detail_inc/'
TBLPROPERTIES ('orc.compress' = 'snappy');
select * from edu2077.ods_order_detail_inc where dt = '2022-02-21';
--（1）首日装载
set hive.exec.dynamic.partition.mode=nonstrict;
insert overwrite table edu2077.dwd_trade_order_detail_inc
partition (dt)
select odt.id,
order_id,
user_id,
course_id,
course_name,
category_id,
category_name,
subject_id,
subject_name,
province_id,
date_id,
session_id,
source_id,
create_time,
origin_amount,
coupon_reduce,
final_amount,
out_trade_no,
trade_body,
date_id
from (
select data.id,
data.order_id,
data.user_id,
data.course_id,
date_format(data.create_time, 'yyyy-MM-dd') date_id,
data.create_time,
data.origin_amount,
data.coupon_reduce,
data.final_amount
from edu2077.ods_order_detail_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert'
) odt
left join
(
select data.id,
data.province_id,
data.out_trade_no,
data.session_id,
data.trade_body
from edu2077.ods_order_info_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert'
) od
on odt.order_id = od.id
left join
(
select distinct common.sid,
common.sc source_id
from edu2077.ods_log_inc oli
where dt = '2022-02-21'
) log
on od.session_id = log.sid
left join
(
select id,
course_name,
category_id,
category_name,
subject_id,
subject_name
from edu2077.dim_course_full
where dt = '2022-02-21'
) dim_course
on course_id = dim_course.id;P056
--9.4 交易域下单事务事实表
--（2）每日装载
insert overwrite table edu2077.dwd_trade_order_detail_inc
partition (dt = '2022-02-22')
select odt.id,
order_id,
user_id,
course_id,
course_name,
category_id,
category_name,
subject_id,
subject_name,
province_id,
date_id,
session_id,
source_id,
create_time,
origin_amount,
coupon_reduce,
final_amount,
out_trade_no,
trade_body
from (
select data.id,
data.order_id,
data.user_id,
data.course_id,
date_format(data.create_time, 'yyyy-MM-dd') date_id,
data.create_time,
data.origin_amount,
data.coupon_reduce,
data.final_amount
from edu2077.ods_order_detail_inc
where dt = '2022-02-22'
and type = 'insert'
) odt
left join
(
select data.id,
data.province_id,
data.session_id,
data.out_trade_no,
data.trade_body
from edu2077.ods_order_info_inc
where dt = '2022-02-22'
and type = 'insert'
) od
on odt.order_id = od.id
left join
(
select distinct common.sid,
common.sc source_id
from edu2077.ods_log_inc oli
where dt = '2022-02-22'
) log
on od.session_id = log.sid
left join
(
select id,
course_name,
category_id,
category_name,
subject_id,
subject_name
from edu2077.dim_course_full
where dt = '2022-02-22'
) dim_course
on course_id = dim_course.id;P057
--9.5 交易域支付成功事务事实表
DROP TABLE IF EXISTS dwd_trade_pay_detail_suc_inc;
CREATE EXTERNAL TABLE dwd_trade_pay_detail_suc_inc
(
`id` STRING COMMENT '编号',
`order_id` STRING COMMENT '订单id',
`user_id` STRING COMMENT '用户id',
`course_id` STRING COMMENT '课程id',
`province_id` STRING COMMENT '省份id',
`date_id` STRING COMMENT '支付日期id',
`alipay_trade_no` STRING COMMENT '支付宝交易编号',
`trade_body` STRING COMMENT '交易内容',
`payment_type` STRING COMMENT '支付类型名称',
`payment_status` STRING COMMENT '支付状态',
`callback_time` STRING COMMENT '支付成功时间',
`callback_content` STRING COMMENT '回调信息',
`original_amount` DECIMAL(16, 2) COMMENT '原始支付金额分摊',
`coupon_reduce_amount` DECIMAL(16, 2) COMMENT '优惠支付金额分摊',
`final_amount` DECIMAL(16, 2) COMMENT '最终支付金额分摊'
) COMMENT '交易域支付成功事务事实表'
PARTITIONED BY (`dt` STRING)
STORED AS ORC
LOCATION '/warehouse/edu/dwd/dwd_trade_pay_detail_suc_inc/'
TBLPROPERTIES ('orc.compress' = 'snappy');
--（1）首日装载
set hive.exec.dynamic.partition.mode=nonstrict;
insert overwrite table edu2077.dwd_trade_pay_detail_suc_inc
partition (dt)
select odt.id,
od.id,
user_id,
course_id,
province_id,
date_format(create_time, 'yyyy-MM-dd') date_id,
alipay_trade_no,
trade_body,
payment_type,
payment_status,
callback_time,
callback_content,
origin_amount,
coupon_reduce,
final_amount,
date_format(create_time, 'yyyy-MM-dd') date_id
from (
select data.id,
data.order_id,
data.user_id,
data.course_id,
data.origin_amount,
data.coupon_reduce,
data.final_amount,
data.create_time
from edu2077.ods_order_detail_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert'
) odt
left join
(
select data.id,
data.province_id
from edu2077.ods_order_info_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert'
) od
on odt.order_id = od.id
join
(
select data.alipay_trade_no,
data.trade_body,
data.order_id,
data.payment_type,
data.payment_status,
data.callback_time,
data.callback_content
from edu2077.ods_payment_info_inc
where dt = '2022-02-21'
and type = 'bootstrap-insert'
and data.callback_time is not null
) pi
on od.id = pi.order_id;
select * from dwd_trade_pay_detail_suc_inc;P058
--9.5 交易域支付成功事务事实表
-- （2）每日装载
insert overwrite table edu2077.dwd_trade_pay_detail_suc_inc
partition (dt = '2022-02-22')
select odt.id,
od.id,
user_id,
course_id,
province_id,
date_format(create_time, 'yyyy-MM-dd') date_id,
alipay_trade_no,
trade_body,
payment_type,
payment_status,
callback_time,
callback_content,
origin_amount,
coupon_reduce,
final_amount
from (
select data.id,
data.order_id,
data.user_id,
data.course_id,
data.origin_amount,
data.coupon_reduce,
data.final_amount,
data.create_time
from edu2077.ods_order_detail_inc
where (dt = '2022-02-22' or dt = date_add('2022-02-22', -1))
and (type = 'insert' or type = 'bootstrap-insert')
) odt
left join
(
select data.id,
data.province_id
from edu2077.ods_order_info_inc
where (dt = '2022-02-22' or dt = date_add('2022-02-22', -1))
and (type = 'insert' or type = 'bootstrap-insert')
) od
on odt.order_id = od.id
join
(
select data.alipay_trade_no,
data.trade_body,
data.order_id,
data.payment_type,
data.payment_status,
data.callback_time,
data.callback_content
from edu2077.ods_payment_info_inc
where dt = '2022-02-22'
and type = 'update'
and array_contains(map_keys(old), 'callback_time')
) pi
on od.id = pi.order_id;P059
9.6 流量域页面浏览事务事实表
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9.7 流量域启动事务事实表
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9.8 流量域动作事务事实表
9.9 流量域曝光事务事实表
9.10 流量域错误事务事实表
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9.11 互动域收藏事务事实表
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9.12 互动域章节评价事务事实表
9.13 互动域课程评价事务事实表
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9.14 考试域答卷事务事实表
9.15 考试域答题事务事实表
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9.16 学习域播放周期快照事实表
（1）首日装载
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9.16 学习域播放周期快照事实表
（2）每日装载
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9.17 学习域播放事务事实表
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9.18 用户域用户注册事务事实表
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9.19 用户域用户登录事务事实表
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9.20 数据装载脚本
9.20.1 首日装载脚本文章来源：https://www.toymoban.com/news/detail-686215.html
9.20.2 每日装载脚本文章来源地址https://www.toymoban.com/news/detail-686215.html
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