;with cte1 as
( select id,
row_number() over (partition by pk,pp,sn order by id asc)
as rn
from mqms_production
) select * into #M from cte1 where rn=1
With the above, I get all the rows with rn=1 but I also want to copy to another table all the rows with max rn for a given partition pk,pp, sn.
Is it possibleto do it without having to write the cte block again with
(partition by pk,pp,sn order by id DESC)
thanks!
You can just add another window function based expression there with reverse sort order and get the top rows on both of them
with cte1 as (
select id,
row_number() over (partition by pk,pp,sn order by id asc) as rn1,
row_number() over (partition by pk,pp,sn order by id desc) as rn2
from mqms_production
)
select * from cte1
where rn1 = 1 or rn2 = 1;
Related
I am currently getting the output of the image below. I want to be able to retrieve the latest Turn Time. Essentially the MAX beginning date and MAX end date. How Should I structure my query ?
I think you just want order by:
select top (1) t.*
from t
order by enddate desc, beginning_date desc;
If you want this per id, then you can use window functions or top (1) with ties:
select top (1) t.*
from (select t.*,
row_number() over (partition by id order by enddate desc, beginning_date desc) as seqnum
from t
) t
where seqnum = 1;
You can use row_number()
select * from
(
select *,row_number() over(parition by id order by beginningdate desc) as rn
from tablename
)A where rn=1
For the larger turn time -
select * from
(
select *,row_number() over(parition by id order by turntime desc) as rn
from tablename
)A where rn=1
I have this sql query :
update CCUSTOMERINFO set VALIDTO=sysdate where (
select * from (
select row_number() over (order by created desc) rn, customer_id, CCUSTOMERINFO.VALIDTO
from CCUSTOMERINFO
where customer_id=100309772 order by created DESC) where rn > 1);
But it say it have some mistake.
This query returns all i want to update :
select * from (
select row_number() over (order by created desc) rn, customer_id, CCUSTOMERINFO.VALIDTO
from CCUSTOMERINFO
where customer_id=100309772 order by created DESC) where rn > 1)
Any suggestion how can i do that?
Use it like the below
update CCUSTOMERINFO set VALIDTO=sysdate where rowid in (
select row_id from (
select row_number() over (order by created desc) rn, customer_id, rowid row_id,
CCUSTOMERINFO.VALIDTO
from CCUSTOMERINFO
where customer_id=100309772 order by created DESC) where rn > 1);
This question is best explained with an image and the script I have currently... How can I extract a FULL one row per assignment, with the lowest rank, and if there are 2 rows with a denserank as 1, then choose either of them?...
select *
,Dense_RANK() over (partition by [Assignment] order by [Text] desc) as
[DenseRank]
from [dbo].[CLEANSED_T3B_Step1_Res_Withdups____CP]
select * from
(
select *
,Dense_RANK() over (partition by [Assignment] order by [Text] desc, NewID()
) as [DenseRank] from [dbo].[CLEANSED_T3B_Step1_Res_Withdups____CP]
) as A
where A.[DenseRank] = 1
Second script is working perfectly!
SELECT * INTO
[dbo].[CLEANSED_T3B_Step1_COMPLETED]
from
(
select *
,Dense_RANK() over (partition by [Assignment] order by
left([Text],1) desc , [Diff_Doc_Clearing_Date] desc , [Amount] asc
as [DenseRank]
from [dbo].[CLEANSED_T3B_Step1_Res_Withdups____CP]
)
as A
where A.[DenseRank] = 1
No longer need just a random first Tied '1st place', now need to get the one with the highest day diff and then also the highest amount after. SO have adapted everything in this version 3.
It seems you don't want to use DENSE_RANK but ROW_NUMBER.
with cte as(
select t.*, rn = row_number() over(partition by assignment order by [text] desc)
from tablename t
)
select * from cte
where rn = 1
Order by 'newid()' as the 'tie-breaker'
Order by [Text],Newid()
I have a SQL table with the columns: ID, ADate, XValue and Type. For each "Type" value, I'd like to retrieve the most recent row (per ADate), the least recent row (per ADate) and also the row containing the highest "XValue" value.
Is it possible to be performed through a single SQL query? I've tried a few times with no success.
Using row_number() you could do something like this:
select ID, ADate, XValue and Type
from (
select *
, min_adate = row_number() over (partition by type order by adate asc)
, max_adate = row_number() over (partition by type order by adate desc)
, max_xvalue = row_number() over (partition by type order by xvalue desc)
from t
) as sub
where 1 in (min_adate,max_adate,max_xvalue)
/* --also could be written as
where min_adate = 1
or max_adate = 1
or max_xvalue = 1
*/
Using a common table expression may make it more readable.
;with cte as (
select *
, min_adate = row_number() over (partition by type order by adate asc)
, max_adate = row_number() over (partition by type order by adate desc)
, max_xvalue = row_number() over (partition by type order by xvalue desc)
from t
)
select ID, ADate, XValue and Type
from cte
where 1 in (min_adate,max_adate,max_xvalue)
select ID, ADate, XValue,[Type]
from (
select *
,row_number() over (partition by type order by adate asc) AS DateSeq
,row_number() over (partition by type) AS TypeCount
,row_number() over (partition by type order by xvalue desc) AS ValueSeq
from t
) as tt
where tt.DateSeq=1 OR tt.DateSeq=tt.TypeCount OR tt.ValueSeq=1
One method uses row_number():
select t.*
from (select t.*,
row_number() over (partition by type order by aDate desc) as seqnum_adate_desc,
row_number() over (partition by type order by aDate asc) as seqnum_adate_asc,
row_number() over (partition by type order by XValue desc) as seqnum_xvalue_desc
from t
) t
where 1 in (seqnum_adate_desc, seqnum_adate_asc, seqnum_xvalue_desc);
I am posting a sample data below.
What I have is a row number which generated a number based on Date and Name columns (achieved using ROW_NUMBER function). What I need now, is another derived column called Group_Num which creates a number for each group (3 in this case). Can this be achieved considering the fact that my Name column repeats but the Date column value changes?
Thanks in advance.
Check This.
We can achive this using Row_number() ,lag() and SUM() .
select
Date,
Name,
Row_number()over( partition by Group_Num order by ROwiD ) Row_Num,
Group_Num
from
(
SELECT * ,
SUM(R) OVER(ORDER BY RowID) Group_Num
FROM
(
select *,
Case When
lag(name ) OVER (ORDER BY RowID ) = name
then 0 else 1 end as R
from
(
select DATE,NAME,
row_number() OVER ( ORDER BY (select 1)) AS 'RowID'
from #TableName
)A
)B
)C
order by ROwiD
OutPut :
You can use DENSE_RANK:
SELECT Date
, Name
, ROW_NUMBER() OVER(Partition By Name Order By Name, Date) as Row_Num
, DENSE_RANK() Over(order by Name) as Group_Num
FROM #Table