HANA SQL中相同元素按顺序的不同分组
我有一张这样的桌子:HANA SQL中相同元素按顺序的不同分组,sql,hana,Sql,Hana,我有一张这样的桌子: NanoTime Sensor Key Rank 15,899,129,832,916 Gyroscope i 1 15,899,132,632,874 Gyroscope i 2 15,899,152,377,999 Gyroscope i 3 15,900,080,214,835 Gyroscope o 1 15,900,092,388,626
NanoTime Sensor Key Rank
15,899,129,832,916 Gyroscope i 1
15,899,132,632,874 Gyroscope i 2
15,899,152,377,999 Gyroscope i 3
15,900,080,214,835 Gyroscope o 1
15,900,092,388,626 Gyroscope o 2
15,900,112,529,501 Gyroscope o 3
15,971,592,577,285 Gyroscope i 4
15,971,592,739,660 Gyroscope i 5
15,971,612,339,952 Gyroscope i 6
15,971,632,305,202 Gyroscope i 7
15,972,579,736,201 Gyroscope o 4
15,972,592,583,743 Gyroscope o 5
15,972,612,371,701 Gyroscope o 6
我用于创建排名列的代码是:
SELECT "NanoTime","Sensor", "Key",
ROW_NUMBER() OVER ( PARTITION BY "Sensor", "Key" ORDER BY "NanoTime" ASC) as RANK
FROM TEST
WHERE "Sensor" = 'Gyroscope'
GROUP BY "NanoTime","Sensor", "Key"
我想创建一个表,其中列按批次排序,还包括一个组列来分隔每个会话。一个会话包含具有相同键的所有元素,如下所示
你能帮我吗?谢谢大家!
NanoTime Sensor Key Rank Group
15,899,129,832,916 Gyroscope i 1 1
15,899,132,632,874 Gyroscope i 2 1
15,899,152,377,999 Gyroscope i 3 1
15,900,080,214,835 Gyroscope o 1 2
15,900,092,388,626 Gyroscope o 2 2
15,900,112,529,501 Gyroscope o 3 2
15,971,592,577,285 Gyroscope i 1 3
15,971,592,739,660 Gyroscope i 2 3
15,971,612,339,952 Gyroscope i 3 3
15,971,632,305,202 Gyroscope i 4 3
15,972,579,736,201 Gyroscope o 1 4
15,972,592,583,743 Gyroscope o 2 4
15,972,612,371,701 Gyroscope o 3 4
下面是一个SQLScript代码,它可以帮助您根据需要获得分组和排名值
--create table Nano ( NanoTime varchar(30), Sensor varchar(30), key char(1))
/*
insert into Nano values ('15,899,129,832,916','Gyroscope','i');-- 1
insert into Nano values ('15,899,132,632,874','Gyroscope','i');-- 2
insert into Nano values ('15,899,152,377,999','Gyroscope','i');-- 3
insert into Nano values ('15,900,080,214,835','Gyroscope','o');-- 1
insert into Nano values ('15,900,092,388,626','Gyroscope','o');-- 2
insert into Nano values ('15,900,112,529,501','Gyroscope','o');-- 3
insert into Nano values ('15,971,592,577,285','Gyroscope','i');-- 4
insert into Nano values ('15,971,592,739,660','Gyroscope','i');-- 5
insert into Nano values ('15,971,612,339,952','Gyroscope','i');-- 6
insert into Nano values ('15,971,632,305,202','Gyroscope','i');-- 7
insert into Nano values ('15,972,579,736,201','Gyroscope','o');-- 4
insert into Nano values ('15,972,592,583,743','Gyroscope','o');-- 5
insert into Nano values ('15,972,612,371,701','Gyroscope','o');-- 6
*/
with cte as (
select
*,
lag(Sensor,1,'') over (order by NanoTime) previousSensor,
lag(key,1,'') over (order by NanoTime) previouskey,
case when
lag(Sensor,1,'') over (order by NanoTime) = Sensor and
lag(key,1,'') over (order by NanoTime) = key
then 0 else 1 end ischange
from Nano
order by NanoTime
)
select NanoTime, Sensor, Key, Row_Number() Over (Partition By GroupNo Order By NanoTime) as Rank, GroupNo
from (
select cte.*, (select sum(x.ischange) from cte x where x.NanoTime <= cte.NanoTime) as groupno
from cte
) t
通过示例数据和以上SAP HANA SQLScript代码执行,可以访问以下输出
对于捕获不断变化的组号的数据,我使用了与SAP HANA和SQL Server数据库平台非常相似的方法
带有Partition By子句的Row_Number函数是另一个与SQL Server相同的SQLScript函数,它可以帮助我解决这个问题
我希望这就是您想要的这里是一个SQLScript代码,可以帮助您获得所需的分组和排名值
--create table Nano ( NanoTime varchar(30), Sensor varchar(30), key char(1))
/*
insert into Nano values ('15,899,129,832,916','Gyroscope','i');-- 1
insert into Nano values ('15,899,132,632,874','Gyroscope','i');-- 2
insert into Nano values ('15,899,152,377,999','Gyroscope','i');-- 3
insert into Nano values ('15,900,080,214,835','Gyroscope','o');-- 1
insert into Nano values ('15,900,092,388,626','Gyroscope','o');-- 2
insert into Nano values ('15,900,112,529,501','Gyroscope','o');-- 3
insert into Nano values ('15,971,592,577,285','Gyroscope','i');-- 4
insert into Nano values ('15,971,592,739,660','Gyroscope','i');-- 5
insert into Nano values ('15,971,612,339,952','Gyroscope','i');-- 6
insert into Nano values ('15,971,632,305,202','Gyroscope','i');-- 7
insert into Nano values ('15,972,579,736,201','Gyroscope','o');-- 4
insert into Nano values ('15,972,592,583,743','Gyroscope','o');-- 5
insert into Nano values ('15,972,612,371,701','Gyroscope','o');-- 6
*/
with cte as (
select
*,
lag(Sensor,1,'') over (order by NanoTime) previousSensor,
lag(key,1,'') over (order by NanoTime) previouskey,
case when
lag(Sensor,1,'') over (order by NanoTime) = Sensor and
lag(key,1,'') over (order by NanoTime) = key
then 0 else 1 end ischange
from Nano
order by NanoTime
)
select NanoTime, Sensor, Key, Row_Number() Over (Partition By GroupNo Order By NanoTime) as Rank, GroupNo
from (
select cte.*, (select sum(x.ischange) from cte x where x.NanoTime <= cte.NanoTime) as groupno
from cte
) t
通过示例数据和以上SAP HANA SQLScript代码执行,可以访问以下输出
对于捕获不断变化的组号的数据,我使用了与SAP HANA和SQL Server数据库平台非常相似的方法
带有Partition By子句的Row_Number函数是另一个与SQL Server相同的SQLScript函数,它可以帮助我解决这个问题
我希望这是您想要的给定数据,该查询不会生成这些结果。给定数据,该查询不会生成这些结果。