2.6 数据清洗转换操作
目的: 主要是用于从ODS以及DIM层 将数据灌入到DWM层操作
- 生成学生出勤状态信息表
基本SQL的实现: 相关的出勤状态未完成
select
ctudd.class_date,
ctudd.class_id,
student_id,
'' as morning_att, --未实现
'' as afternoon_att, --未实现
'' as evening_att, --未实现
substr(ctudd.class_date,1,4) as yearinfo,
substr(ctudd.class_date,6,2) as monthinfo,
substr(ctudd.class_date,9,2) as dayinfo
from (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content !='开班典礼') ctudd
left join (select * from itcast_ods.student_signin_ods where share_state = 1) sso on sso.class_id = ctudd.class_id
left join itcast_dimen.class_time_dimen ctd on ctd.id = sso.time_table_id
group by ctudd.class_date , ctudd.class_id,sso.student_id;探讨如何判断学生出勤状态呢?
接着 编写一个伪代码. 实现这个上述的逻辑:
select
ctudd.class_date,
ctudd.class_id,
student_id,
if(
sum(
if(
sso.signin_time
between ctd.morning_begin_time - 40 and ctd.morning_end_time
,1,0)
) > 0, -- 如果大于0 认为当天的打卡记录中, 一定是有出勤的打卡记录, 如果小于等于0 认为没有出勤
if(
sum(
if(
sso.signin_time
between ctd.morning_begin_time - 40 and ctd.morning_begin_time + 10
, 1 , 0)
) >0, -- 如果大于0, 认为当天打卡记录中, 一定是有正常出勤的记录, 否则认为迟到出勤
0,1),
2)as morning_att, --伪代码实现
'' as afternoon_att, --未实现
'' as evening_att, --未实现
substr(ctudd.class_date,1,4) as yearinfo,
substr(ctudd.class_date,6,2) as monthinfo,
substr(ctudd.class_date,9,2) as dayinfo
from (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content !='开班典礼') ctudd
left join (select * from itcast_ods.student_signin_ods where share_state = 1) sso on sso.class_id = ctudd.class_id
left join itcast_dimen.class_time_dimen ctd on ctd.id = sso.time_table_id
group by ctudd.class_date , ctudd.class_id,sso.student_id;探讨. 如何实现日期的 相加 和 相减 (对分钟处理)
select unix_timestamp('2021-10-08 15:40:30','yyyy-MM-dd HH:mm:ss') - 40*60;发现: 作息时间表的 上课时间内容, 只有 时 分 秒 没有 年 月 日
实现上午的学生出勤统计SQL:
select
ctudd.class_date,
ctudd.class_id,
student_id,
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_end_time),'yyyy-MM-dd HH:mm:ss')
,1,0)
) > 0, -- 如果大于0 认为当天的打卡记录中, 一定是有出勤的打卡记录, 如果小于等于0 认为没有出勤
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') + 10*60
, 1 , 0)
) >0, -- 如果大于0, 认为当天打卡记录中, 一定是有正常出勤的记录, 否则认为迟到出勤
0,1),
2)as morning_att,
'' as afternoon_att, --未实现
'' as evening_att, --未实现
substr(ctudd.class_date,1,4) as yearinfo,
substr(ctudd.class_date,6,2) as monthinfo,
substr(ctudd.class_date,9,2) as dayinfo
from (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content !='开班典礼') ctudd
left join (select * from itcast_ods.student_signin_ods where share_state = 1) sso on sso.class_id = ctudd.class_id
left join itcast_dimen.class_time_dimen ctd on ctd.id = sso.time_table_id
group by ctudd.class_date , ctudd.class_id,sso.student_id;
select unix_timestamp('2021-10-08 15:40:30','yyyy-MM-dd HH:mm:ss') - 40*60; -- 1633676430- 最终实现:
select
ctudd.class_date,
ctudd.class_id,
student_id,
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_end_time),'yyyy-MM-dd HH:mm:ss')
,1,0)
) > 0, -- 如果大于0 认为当天的打卡记录中, 一定是有出勤的打卡记录, 如果小于等于0 认为没有出勤
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') + 10*60
, 1 , 0)
) >0, -- 如果大于0, 认为当天打卡记录中, 一定是有正常出勤的记录, 否则认为迟到出勤
0,1),
2)as morning_att,
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.afternoon_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.afternoon_end_time),'yyyy-MM-dd HH:mm:ss')
,1,0)
) > 0, -- 如果大于0 认为当天的打卡记录中, 一定是有出勤的打卡记录, 如果小于等于0 认为没有出勤
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.afternoon_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.afternoon_begin_time),'yyyy-MM-dd HH:mm:ss') + 10*60
, 1 , 0)
) >0, -- 如果大于0, 认为当天打卡记录中, 一定是有正常出勤的记录, 否则认为迟到出勤
0,1),
2) as afternoon_att,
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.evening_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.evening_end_time),'yyyy-MM-dd HH:mm:ss')
,1,0)
) > 0, -- 如果大于0 认为当天的打卡记录中, 一定是有出勤的打卡记录, 如果小于等于0 认为没有出勤
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.evening_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.evening_begin_time),'yyyy-MM-dd HH:mm:ss') + 10*60
, 1 , 0)
) >0, -- 如果大于0, 认为当天打卡记录中, 一定是有正常出勤的记录, 否则认为迟到出勤
0,1),
2) as evening_att, --未实现
substr(ctudd.class_date,1,4) as yearinfo,
substr(ctudd.class_date,6,2) as monthinfo,
substr(ctudd.class_date,9,2) as dayinfo
from (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content !='开班典礼') ctudd
left join (select * from itcast_ods.student_signin_ods where share_state = 1) sso on sso.class_id = ctudd.class_id
left join itcast_dimen.class_time_dimen ctd on ctd.id = sso.time_table_id
group by ctudd.class_date , ctudd.class_id,sso.student_id;将SQL的结果灌入到DWM层
set hive.auto.convert.join=false;
--分区
SET hive.exec.dynamic.partition=true;
SET hive.exec.dynamic.partition.mode=nonstrict;
set hive.exec.max.dynamic.partitions.pernode=10000;
set hive.exec.max.dynamic.partitions=100000;
set hive.exec.max.created.files=150000;
--hive压缩
set hive.exec.compress.intermediate=true;
set hive.exec.compress.output=true;
--写入时压缩生效
set hive.exec.orc.compression.strategy=COMPRESSION;
--分桶
--set hive.enforce.bucketing=true;
--set hive.enforce.sorting=true;
--set hive.optimize.bucketmapjoin = true;
--set hive.auto.convert.sortmerge.join=true;
--set hive.auto.convert.sortmerge.join.noconditionaltask=true;
--并行执行
set hive.exec.parallel=true;
set hive.exec.parallel.thread.number=8;
--小文件合并
-- set mapred.max.split.size=2147483648;
-- set mapred.min.split.size.per.node=1000000000;
-- set mapred.min.split.size.per.rack=1000000000;
--矢量化查询
set hive.vectorized.execution.enabled=true;
--关联优化器
set hive.optimize.correlation=true;
--读取零拷贝
set hive.exec.orc.zerocopy=true;
--join数据倾斜
set hive.optimize.skewjoin=true;
-- set hive.skewjoin.key=100000;
set hive.optimize.skewjoin.compiletime=true;
set hive.optimize.union.remove=true;
-- group倾斜
set hive.groupby.skewindata=true;
insert into table itcast_dwm.student_attendance_dwm partition(yearinfo,monthinfo,dayinfo)
select
ctudd.class_date,
ctudd.class_id,
student_id,
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_end_time),'yyyy-MM-dd HH:mm:ss')
,1,0)
) > 0, -- 如果大于0 认为当天的打卡记录中, 一定是有出勤的打卡记录, 如果小于等于0 认为没有出勤
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.morning_begin_time),'yyyy-MM-dd HH:mm:ss') + 10*60
, 1 , 0)
) >0, -- 如果大于0, 认为当天打卡记录中, 一定是有正常出勤的记录, 否则认为迟到出勤
0,1),
2)as morning_att,
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.afternoon_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.afternoon_end_time),'yyyy-MM-dd HH:mm:ss')
,1,0)
) > 0, -- 如果大于0 认为当天的打卡记录中, 一定是有出勤的打卡记录, 如果小于等于0 认为没有出勤
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.afternoon_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.afternoon_begin_time),'yyyy-MM-dd HH:mm:ss') + 10*60
, 1 , 0)
) >0, -- 如果大于0, 认为当天打卡记录中, 一定是有正常出勤的记录, 否则认为迟到出勤
0,1),
2) as afternoon_att,
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.evening_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.evening_end_time),'yyyy-MM-dd HH:mm:ss')
,1,0)
) > 0, -- 如果大于0 认为当天的打卡记录中, 一定是有出勤的打卡记录, 如果小于等于0 认为没有出勤
if(
sum(
if(
unix_timestamp(sso.signin_time,'yyyy-MM-dd HH:mm:ss')
between unix_timestamp(concat(ctudd.class_date,' ',ctd.evening_begin_time),'yyyy-MM-dd HH:mm:ss') - 40*60
and unix_timestamp(concat(ctudd.class_date,' ',ctd.evening_begin_time),'yyyy-MM-dd HH:mm:ss') + 10*60
, 1 , 0)
) >0, -- 如果大于0, 认为当天打卡记录中, 一定是有正常出勤的记录, 否则认为迟到出勤
0,1),
2) as evening_att, --未实现
substr(ctudd.class_date,1,4) as yearinfo,
substr(ctudd.class_date,6,2) as monthinfo,
substr(ctudd.class_date,9,2) as dayinfo
from (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content !='开班典礼') ctudd
left join (select * from itcast_ods.student_signin_ods where share_state = 1) sso on sso.class_id = ctudd.class_id
left join itcast_dimen.class_time_dimen ctd on ctd.id = sso.time_table_id
where ctudd.class_date in ('2019-09-03','2019-09-04','2019-09-05')
group by ctudd.class_date , ctudd.class_id,sso.student_id;-
班级出勤人数表
SQL的实现
select
dateinfo,
class_id,
count(
case
when morning_att in ('0','1') then student_id
else null end
) as morning_att_count,
count(
case
when afternoon_att in ('0','1') then student_id
else null end
) as afternoon_att_count,
count(
case
when evening_att in ('0','1') then student_id
else null end
) as evening_att_count,
sum(
case
when morning_att ='1' then 1
else 0 end
) as morning_late_count,
sum(
case
when afternoon_att ='1' then 1
else 0 end
) as afternoon_late_count,
sum(
case
when evening_att ='1' then 1
else 0 end
) as evening_late_count,
yearinfo,
monthinfo,
dayinfo
from itcast_dwm.student_attendance_dwm
group by dateinfo,yearinfo,monthinfo,dayinfo,class_id;将查询的结果灌入到班级出勤信息表中
insert into table itcast_dwm.class_attendance_dwm partition(yearinfo,monthinfo,dayinfo)
select
dateinfo,
class_id,
count(
case
when morning_att in ('0','1') then student_id
else null end
) as morning_att_count,
count(
case
when afternoon_att in ('0','1') then student_id
else null end
) as afternoon_att_count,
count(
case
when evening_att in ('0','1') then student_id
else null end
) as evening_att_count,
sum(
case
when morning_att ='1' then 1
else 0 end
) as morning_late_count,
sum(
case
when afternoon_att ='1' then 1
else 0 end
) as afternoon_late_count,
sum(
case
when evening_att ='1' then 1
else 0 end
) as evening_late_count,
yearinfo,
monthinfo,
dayinfo
from itcast_dwm.student_attendance_dwm
group by dateinfo,yearinfo,monthinfo,dayinfo,class_id;- 班级请假人数表的统计生成
由于库表没有一条符合条件的请假数据, 所以在这里模拟一条请假数据
INSERT INTO itcast_ods.student_leave_apply_ods partition (dt)
values (125, 5032, 119142, 1, 3491, '2019-09-08 16:42:29', '狂犬疫苗最后一针', 1, 2, '2019-09-03 08:00:00', 2, '2019-09-03 23:30:00', 2, 1, 0, null, null, '医院打针，狂犬疫苗最后一针了', 1, '2019-09-02 08:56:54','2020-07-07');计算上午的每天各个班级请假人数
select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as morning_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.morning_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.morning_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id;计算下午的每天各个班级的请假人数
select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as afternoon_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.afternoon_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.afternoon_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id;计算晚自习的每天各个班级的请假人数
select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as evening_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.evening_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.evening_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id;目前需要将三个结果的数据合并在一起, 如何实现呢?
实现最终的查询的SQL:
with A as (select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as morning_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.morning_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.morning_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id),
B AS (select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as afternoon_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.afternoon_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.afternoon_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id),
C AS (select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as evening_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.evening_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.evening_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id),
temp as (select
coalesce(A.class_date,B.class_date,C.class_date) AS class_date,
coalesce(A.class_id,B.class_id,C.class_id) AS class_id,
nvl(A.morning_leave_count,0) as morning_leave_count,
nvl(B.afternoon_leave_count,0) as afternoon_leave_count,
nvl(C.evening_leave_count,0) as evening_leave_count
from A
full join B on A.class_date = B.class_date and A.class_id = B.class_id
full join C on A.class_date = C.class_date and A.class_id = C.class_id)
select
class_date,
class_id,
sum(morning_leave_count) as morning_leave_count,
sum(afternoon_leave_count) as afternoon_leave_count,
sum(evening_leave_count) as evening_leave_count,
substr(class_date,1,4) as yearinfo,
substr(class_date,6,2) as monthinfo,
substr(class_date,9,2) as dayinfo
from temp group by class_date,class_id;将结果灌入到DWM层即可
set hive.auto.convert.join=false;
--分区
SET hive.exec.dynamic.partition=true;
SET hive.exec.dynamic.partition.mode=nonstrict;
set hive.exec.max.dynamic.partitions.pernode=10000;
set hive.exec.max.dynamic.partitions=100000;
set hive.exec.max.created.files=150000;
--hive压缩
set hive.exec.compress.intermediate=true;
set hive.exec.compress.output=true;
--写入时压缩生效
set hive.exec.orc.compression.strategy=COMPRESSION;
--分桶
--set hive.enforce.bucketing=true;
--set hive.enforce.sorting=true;
--set hive.optimize.bucketmapjoin = true;
--set hive.auto.convert.sortmerge.join=true;
--set hive.auto.convert.sortmerge.join.noconditionaltask=true;
--并行执行
set hive.exec.parallel=true;
set hive.exec.parallel.thread.number=8;
--小文件合并
-- set mapred.max.split.size=2147483648;
-- set mapred.min.split.size.per.node=1000000000;
-- set mapred.min.split.size.per.rack=1000000000;
--矢量化查询
set hive.vectorized.execution.enabled=true;
--关联优化器
set hive.optimize.correlation=true;
--读取零拷贝
set hive.exec.orc.zerocopy=true;
--join数据倾斜
set hive.optimize.skewjoin=false;
-- set hive.skewjoin.key=100000;
set hive.optimize.skewjoin.compiletime=false;
set hive.optimize.union.remove=false;
-- group倾斜
set hive.groupby.skewindata=false;
with A as (select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as morning_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.morning_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.morning_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id),
B AS (select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as afternoon_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.afternoon_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.afternoon_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id),
C AS (select
ctudd.class_date,
ctudd.class_id,
count(distinct sla.student_id) as evening_leave_count
from (select * from itcast_ods.student_leave_apply_ods where audit_state = 1 and cancel_state = 0 and valid_state = 1) sla
join itcast_dimen.class_time_dimen ctd on sla.class_id = ctd.class_id
join (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd on ctudd.class_id = sla.class_id
where ctudd.class_date between ctd.use_begin_date and ctd.use_end_date
and concat(ctudd.class_date,' ',ctd.evening_begin_time) >= sla.begin_time
and concat(ctudd.class_date,' ',ctd.evening_begin_time) <= sla.end_time
group by ctudd.class_date,ctudd.class_id),
temp as (select
coalesce(A.class_date,B.class_date,C.class_date) AS class_date,
coalesce(A.class_id,B.class_id,C.class_id) AS class_id,
nvl(A.morning_leave_count,0) as morning_leave_count,
nvl(B.afternoon_leave_count,0) as afternoon_leave_count,
nvl(C.evening_leave_count,0) as evening_leave_count
from A
full join B on A.class_date = B.class_date and A.class_id = B.class_id
full join C on A.class_date = C.class_date and A.class_id = C.class_id)
insert into table itcast_dwm.class_leave_dwm partition(yearinfo,monthinfo,dayinfo)
select
class_date,
class_id,
sum(morning_leave_count) as morning_leave_count,
sum(afternoon_leave_count) as afternoon_leave_count,
sum(evening_leave_count) as evening_leave_count,
substr(class_date,1,4) as yearinfo,
substr(class_date,6,2) as monthinfo,
substr(class_date,9,2) as dayinfo
from temp group by class_date,class_id;- 旷课人数表统计
SQL最终实现
insert into table itcast_dwm.class_truant_dwm partition(yearinfo,monthinfo,dayinfo)
select
ctudd.class_date as dateinfo,
ctudd.class_id,
cssc.studying_student_count - nvl(cad.morning_att_count,0) - nvl(cld.morning_leave_count,0) as morning_truant_count,
cssc.studying_student_count - nvl(cad.afternoon_att_count,0) - nvl(cld.afternoon_leave_count,0) as afternoon_truant_count,
cssc.studying_student_count - nvl(cad.evening_att_count,0) - nvl(cld.evening_leave_count,0) as evening_truant_count,
substr(ctudd.class_date,1,4) as yearinfo,
substr(ctudd.class_date,6,2) as monthinfo,
substr(ctudd.class_date,9,2) as dayinfo
from (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd
left join itcast_dimen.class_studying_student_count_dimen cssc on ctudd.class_date = cssc.studying_date and ctudd.class_id = cssc.class_id
left join itcast_dwm.class_attendance_dwm cad on ctudd.class_id = cad.class_id and ctudd.class_date = cad.dateinfo
left join itcast_dwm.class_leave_dwm cld on ctudd.class_id = cld.class_id and ctudd.class_date = cld.dateinfo
where ctudd.class_date in('2019-09-03','2019-09-04','2019-09-05')- 汇总表
insert into table itcast_dwm.class_all_dwm partition(yearinfo,monthinfo,dayinfo)
select
ctudd.class_date as dateinfo,
ctudd.class_id,
cssc.studying_student_count,
cad.morning_att_count,
concat(round(nvl(cad.morning_att_count,0) / cssc.studying_student_count * 100,2),'%') as morning_att_ratio,
cad.afternoon_att_count,
concat(round(nvl(cad.afternoon_att_count,0) / cssc.studying_student_count * 100,2),'%') as afternoon_att_ratio,
cad.evening_att_count,
concat(round(nvl(cad.evening_att_count,0) / cssc.studying_student_count * 100,2),'%') as evening_att_ratio,
cad.morning_late_count,
concat(round(nvl(cad.morning_late_count,0) / cssc.studying_student_count * 100,2),'%') as morning_late_ratio,
cad.afternoon_late_count,
concat(round(nvl(cad.afternoon_late_count,0) / cssc.studying_student_count * 100,2),'%') as afternoon_late_ratio,
cad.evening_late_count,
concat(round(nvl(cad.evening_late_count,0) / cssc.studying_student_count * 100,2),'%') as evening_late_ratio,
cld.morning_leave_count,
concat(round(nvl(cld.morning_leave_count,0) / cssc.studying_student_count * 100,2),'%') as morning_leave_ratio,
cld.afternoon_leave_count,
concat(round(nvl(cld.afternoon_leave_count,0) / cssc.studying_student_count * 100,2),'%') as afternoon_leave_ratio,
cld.evening_leave_count,
concat(round(nvl(cld.evening_leave_count,0) / cssc.studying_student_count * 100,2),'%') as evening_leave_ratio,
ctd.morning_truant_count,
concat(round(nvl(ctd.morning_truant_count,0) / cssc.studying_student_count * 100,2),'%') as morning_truant_ratio,
ctd.afternoon_truant_count,
concat(round(nvl(ctd.afternoon_truant_count,0) / cssc.studying_student_count * 100,2),'%') as afternoon_truant_ratio,
ctd.evening_truant_count,
concat(round(nvl(ctd.evening_truant_count,0) / cssc.studying_student_count * 100,2),'%') as evening_truant_ratio,
substr(ctudd.class_date,1,4) as yearinfo,
substr(ctudd.class_date,6,2) as monthinfo,
substr(ctudd.class_date,9,2) as dayinfo
from (select * from itcast_dimen.course_table_upload_detail_dimen where nvl(content,'')!='' and content != '开班典礼') ctudd
left join itcast_dimen.class_studying_student_count_dimen cssc on cssc.class_id = ctudd.class_id and cssc.studying_date = ctudd.class_date
left join itcast_dwm.class_attendance_dwm cad on ctudd.class_id = cad.class_id and ctudd.class_date = cad.dateinfo
left join itcast_dwm.class_leave_dwm cld on ctudd.class_id = cld.class_id and ctudd.class_date = cld.dateinfo
left join itcast_dwm.class_truant_dwm ctd on ctudd.class_id = ctd.class_id and ctudd.class_date = ctd.dateinfo
where ctudd.class_date in ('2019-09-03','2019-09-04','2019-09-05');2.7 数据的统计分析(DWS)
DWS: 细化维度统计操作
SQL实现
insert into table itcast_dws.class_attendance_dws partition(yearinfo,monthinfo,dayinfo)
select
concat(yearinfo,'-',monthinfo) as dateinfo,
class_id,
sum(studying_student_count) as studying_student_count,
sum(morning_att_count) as morning_att_count,
concat(round(sum(morning_att_count) / sum(studying_student_count) *100,2),'%') as morning_att_ratio,
sum(afternoon_att_count) as afternoon_att_count,
concat(round(sum(afternoon_att_count) / sum(studying_student_count) *100,2),'%') as afternoon_att_ratio,
sum(evening_att_count) as evening_att_count,
concat(round(sum(evening_att_count) / sum(studying_student_count) *100,2),'%') as evening_att_ratio,
sum(morning_late_count) as morning_late_count,
concat(round(sum(morning_late_count) / sum(studying_student_count) *100,2),'%') as morning_late_ratio,
sum(afternoon_late_count) as afternoon_late_count,
concat(round(sum(afternoon_late_count) / sum(studying_student_count) *100,2),'%') as afternoon_late_ratio,
sum(evening_late_count) as evening_late_count,
concat(round(sum(evening_late_count) / sum(studying_student_count) *100,2),'%') as evening_late_ratio,
sum(morning_leave_count) as morning_leave_count,
concat(round(sum(morning_leave_count) / sum(studying_student_count) *100,2),'%') as morning_leave_ratio,
sum(afternoon_leave_count) as afternoon_leave_count,
concat(round(sum(afternoon_leave_count) / sum(studying_student_count) *100,2),'%') as afternoon_leave_ratio,
sum(evening_leave_count) as evening_leave_count,
concat(round(sum(evening_leave_count) / sum(studying_student_count) *100,2),'%') as evening_leave_ratio,
sum(morning_truant_count) as morning_truant_count,
concat(round(sum(morning_truant_count) / sum(studying_student_count) *100,2),'%') as morning_truant_ratio,
sum(afternoon_truant_count) as afternoon_truant_count,
concat(round(sum(afternoon_truant_count) / sum(studying_student_count) *100,2),'%') as afternoon_truant_ratio,
sum(evening_truant_count) as evening_truant_count,
concat(round(sum(evening_truant_count) / sum(studying_student_count) *100,2),'%') as evening_truant_ratio,
'4' as time_type,
yearinfo,
monthinfo,
'-1' as dayinfo
from itcast_dwm.class_all_dwm
group by yearinfo,monthinfo,class_id;