I'm having trouble with writing a query to get difference between the UpdateDate and the CreationDate of 2 records if the ID is the lowets and the difference between the most recent and second most recent UpdateDate.
Here's my Query:
SELECT
a.ID, a.RequestID, b.KrStatus, b.CrDate , b.UpdateDate,
DATEDIFF (HOUR, b.CrDate, b.UpdateDate) AS TimeDifference,
CASE WHEN a.ID = (SELECT MAX(a.ID) FROM [dbo].[Krdocs_hist] a WHERE a.RequestID = 1)
THEN 'YES'
ELSE 'NO'
END AS isMax,
CASE WHEN a.ID = (SELECT MIN(a.ID) FROM [dbo].[Krdocs_hist] a WHERE a.RequestID = 1)
THEN 'YES'
ELSE 'NO'
END AS isMi
FROM [dbo].[Krdocs_hist] a, [dbo].Krdocs_Details_hist b
WHERE
a.RequestId = b.RequestId
and a.ID = b.ID
and a.RequestId = 1
ORDER BY b.RequestID
Here's my current result:
What I'd like to do is get the last possible record, check to see if there was an existing one before it. If there wasn't compare the UpdateDate and CrDate (UpdateDate minus CrDate. If there was a record before this I want to do the UpdateDate minus the previous UpdateDate.
Using this query:
SELECT b.Id, b.RequestId, b.UpdateDate, b.KrStatus
FROM [dbo].[Krdocs_Details_hist] b
WHERE b.RequestId = 1
Has this result:
And using this query:
SELECT a.*
FROM [dbo].[Krdocs_hist] a
WHERE RequestId = 1
Has this result:
UPDATE
Since LAG is available from SQL 2012, you can use like below:
SELECT
ID,
RequestID,
CrDate,
UpdateDate,
KrStatus,
DATEDIFF(HOUR, PreviousUpdateDate, UpdateDate) as TimeDifference
FROM
(SELECT
ID,
RequestID,
CrDate,
UpdateDate,
KrStatus,
LAG(UpdateDate, 1, CrDate) OVER (ORDER BY YEAR(ID)) AS PreviousUpdateDate
FROM [dbo].Krdocs_Details_hist) as tmp
I think you can try like this:
SELECT
CASE
WHEN COUNT(*) <= 1 THEN DATEDIFF(HOUR,
(SELECT CrDate FROM [dbo].Krdocs_Details_hist),
(SELECT UpdateDate FROM [dbo].Krdocs_Details_hist))
WHEN COUNT(*) > 1 THEN DATEDIFF(HOUR,
(SELECT MAX(UpdateDate) FROM [dbo].Krdocs_Details_hist WHERE UpdateDate < ( SELECT MAX(UpdateDate) FROM [dbo].Krdocs_Details_hist)),
(SELECT MAX(UpdateDate) FROM [dbo].Krdocs_Details_hist))
END AS TimeDifference
FROM [dbo].Krdocs_Details_hist
Related
i'm new to SQL and i would need an help.
I have a TAB and I need to find for any item B in the TAB the item A with the closest date. In this case the A with 02.09.2021 04:25:30
Date.
Item
07.09.2021 05:02:05
A
06.09.2021 05:01:02
A
05.09.2021 05:00:02
A
04.09.2021 04:59:01
A
03.09.2021 04:58:03
A
02.09.2021 04:56:55
A
02.09.2021 04:33:56
B
02.09.2021 04:25:30
A
WITH CTE(DATE,ITEM)AS
(
SELECT '20210907 05:02:05' , 'A'UNION ALL
SELECT '20210906 05:01:02' , 'A'UNION ALL
SELECT '20210905 05:00:02' , 'A'UNION ALL
SELECT'20210904 04:59:01' , 'A'UNION ALL
SELECT'20210903 04:58:03' , 'A'UNION ALL
SELECT'20210902 04:56:55' , 'A'UNION ALL
SELECT'20210902 04:33:56' , 'B'UNION ALL
SELECT'20210902 04:25:30' , 'A'
)
SELECT
CAST(C.DATE AS DATETIME)X_DATE,C.ITEM,Q.CLOSEST
FROM CTE AS C
OUTER APPLY
(
SELECT TOP 1 CAST(X.DATE AS DATETIME)CLOSEST
FROM CTE AS X
WHERE X.ITEM='A'AND CAST(X.DATE AS DATETIME)<CAST(C.DATE AS DATETIME)
ORDER BY CAST(X.DATE AS DATETIME) ASC
)Q
WHERE C.ITEM='B'
You can use OUTER APPLY-approach as in the above query.
Please also take a look that datetime-column (DATE)is written in the ISO-compliant form
Your data has only two columns. If you want the only the closest A timestamp, then the fastest way is probably window functions:
select t.*,
(case when prev_a_date is null then next_a_date
when next_a_date is null then prev_a_date
when datediff(second, prev_a_date, date) <= datediff(second, date, next_a_date) then prev_a_date
else next_a_date
end) as a_date
from (select t.*,
max(case when item = 'A' then date end) over (order by date) as prev_a_date,
min(case when item = 'A' then date end) over (order by date desc) as next_a_date
from t
) t
where item = 'B';
This uses seconds to measure the time difference, but you can use a smaller unit if appropriate.
You can also do this using apply if you have more columns from the "A" rows that you want:
select tb.*, ta.*
from t b outer apply
(select top (1) ta.*
from t ta
where item = 'A'
order by abs(datediff(second, a.date, b.date))
) t
where item = 'B';
I want to find records in date range 1/1/19-1/7/19 which increase amount
using table HISTORY:
DATE AMOUNT ID
(Date, number, varchar2(30))
I find IDs inside range correctly
assuming increase/decrease can happens only when having two records with same Id
with suspect as
(select id
from history
where t.createddate < to_date('2019-07-01', 'yyyy-mm-dd')
group by id
having count(1) > 1),
ids as
(select id
from history
join suspect
on history.id = suspect.id
where history.date > to_date('2019-01-01', 'yyyy-mm-dd')
and history.date < to_date('2019-07-01', 'yyyy-mm-dd'))
select count(distinct id)
from history a, history b
where a.id = b.id
and a.date < b.date
and a.amount < b.amount
The problem to find increase I need to find previous record which can be before time range
I can find last previous time before time range, but I failed to use it:
ids_prevtime as (
select history.*, max(t.date) over (partition by t.id) max_date
from history
join ids on history.userid = ids.id
where history.date < to_date('2019-01-01','yyyy-mm-dd' )
), ids_prev as (
select * from ids_prevtime where createdate=max_date
)
I see that you found solution, but maybe you could do it simpler, using lag():
select count(distinct id)
from (select id, date_, amount,
lag(amount) over (partition by id order by date_) prev_amt
from history)
where date_ between date '2019-01-01' and date '2019-07-01'
and amount > prev_amt;
dbfiddle
Add union of last history records before range with records inside range
ids_prev as
(select ID, DATE, AMOUNT
from id_before_rangetime
where createddate = max_date),
ids_in_range as
(select history.*
from history
join ids
on history.ID = ids.ID
where history.date > to_date('2019-01-01', 'yyyy-mm-dd')
and history.date < to_date('2019-07-01', 'yyyy-mm-dd')),
all_relevant as
(select * from ids_in_range union all select * from ids_prev)
and then count increases:
select count(distinct id)
from all_relevant a, all_relevant b
where a.id = b.id
and a.date < b.date
and a.amount < b.amount
I have a columns as Memnumber, activity type, activity date, activity ID. One member can have activities after few days. I want to write a case statement that if the activity date is most initial then INITIAL and if activity is most recent then MR and if there is any activity in between these 2 dates then BETWEEN. They need to be grouped by Memnumber and treatment type.
I wrote query as :
--MR County Tree
SELECT T0.MEMBERNUMBER,
T0.ACTIVITYTYPE,
T1.MR_CY17,
T1.IN_CY17,
T0.ACTIVITY_DATE,
(T0.ACTIVITYID)
FROM DLA_EXTRACT_FINAL T0
INNER JOIN (
SELECT MEMBERNUMBER,
ACTIVITYTYPE,
MAX(ACTIVITY_DATE) MR_CY17,
MIN(ACTIVITY_DATE) IN_CY17
FROM DLA20_EXTRACT_FINAL
WHERE to_char(ACTIVITY_DATE, 'YYYYMMDD') >= 20170101
AND to_char(ACTIVITY_DATE, 'YYYYMMDD') <= 20171231
GROUP BY MEMBERNUMBER,
ACTIVITYTYPE
) T1 ON T0.MEMBERNUMBER = T1.MEMBERNUMBER
AND T0.ACTIVITYTYPE = T1.ACTIVITYTYPE
AND T0.ACTIVITY_DATE = T1.MR_CY17
--where T0.ACTIVITYTYPE='MT'
WHERE t0.MEMBERNUMBER = 'M500085268'
GROUP BY T0.MEMBERNUMBER,
T0.ACTIVITYTYPE,
T1.MR_CY17,
T1.IN_CY17,
T0.ACTIVITYID,
T0.ACTIVITY_DATE
ORDER BY T0.MEMBERNUMBER,
T0.ACTIVITYTYPE,
T1.MR_CY17,
T1.IN_CY17.
Looking for a solution.
You want to use window functions. Something like:
SELECT T0.MEMBERNUMBER,
T0.ACTIVITYTYPE,
T0.ACTIVITY_DATE,
T0.ACTIVITYID,
case when row_number() over (partition by T0.MEMBERNUMBER, T0.ACTIVITYTYPE
order by T0.ACTIVITY_DATE) = 1 then 1 else 0 end most_initial,
case when row_number() over (partition by T0.MEMBERNUMBER, T0.ACTIVITYTYPE
order by T0.ACTIVITY_DATE desc) = 1 then 1 else 0 end most_recent
FROM DLA_EXTRACT_FINAL T0
Then you can use case statements to label as INITIAL if most_intial = 1, MR if most_recent = 1, or BETWEEN if both are 0.
I am writing a query and need it to Remove all duplicates of a.GenUserID but also keep the most recent login date ( that is b.LogDateTime) but this date must be older than 6 months. If there are later dates, they have to be removed.
I hope this makes sense.
SELECT DISTINCT
a.GenUserID,
c.DeletionDate,
b.LogDateTime,
(CASE c.Disabled WHEN 0 THEN 'NO' else 'YES - ARCHIVED' end)
FROM RioReport.dbo.GenUser a
LEFT JOIN dbo.GenUserArchive c on a.GenUserID = c.GenUserID
LEFT JOIN dbo.GenUserAccessHistory b on a.GenUserID = b.ExtraInfo
WHERE(a.Disabled=0 or c.Disabled=0)
AND c.DeletionDate IS NOT NULL
AND ((DateAdd(MM, -6, GetDate()) > b.LogDateTime or b.LogDateTime IS NULL))
ORDER BY a.GenUserID, b.LogDateTime desc
You could add the row_number() information to your query, and wrap that query into an outer query that just takes the records with number 1 from that result:
select *
from (
select a.GenUserID,
c.DeletionDate,
b.LogDateTime,
case c.Disabled when 0 then 'NO' else 'YES - ARCHIVED' end as diabled,
row_number() over (partition by a.GenUserID
order by b.LogDateTime desc) as rn
from RioReport.dbo.GenUser a
inner join dbo.GenUserArchive c
on a.GenUserID = c.GenUserID
left join dbo.GenUserAccessHistory b
on a.GenUserID = b.ExtraInfo
where (a.Disabled=0 or c.Disabled=0)
and c.DeletionDate is not null
and (DateAdd(MM, -6, GetDate()) > b.LogDateTime or b.LogDateTime is null)
)
where rn = 1
order by a.GenUserID
Note that you can turn the first left join into an inner join without any change to the result set, since you have a non-null check on one of its fields. inner join is then preferred, and might give a performance improvement.
If GenUserAccessHistory.LogDateTime is always non-null, then you can avoid the test or b.LogDateTime is null by moving the DateAdd(MM, -6, GetDate()) > b.LogDateTime condition to the appropriate join on clause.
The generated row number will be given in order of descending LogDateTime values, and restart from 1 for every different user.
Alternative without window functions
row_number() and other window functions are supported since SQL Server 2008. In comments you write you cannot use it. If that is the case, here is an alternative using a common table expression (supported since SQL Server 2005):
;with cte as (
select a.GenUserID,
c.DeletionDate,
b.LogDateTime,
case c.Disabled when 0 then 'NO' else 'YES - ARCHIVED' end as disabled,
from RioReport.dbo.GenUser a
inner join dbo.GenUserArchive c
on a.GenUserID = c.GenUserID
left join dbo.GenUserAccessHistory b
on a.GenUserID = b.ExtraInfo
where (a.Disabled=0 or c.Disabled=0)
and c.DeletionDate is not null
and (DateAdd(MM, -6, GetDate()) > b.LogDateTime or b.LogDateTime is null)
)
select *
from cte main
where LogDateTime is null
or not exists (select 1
from cte sub
where sub.GenUserID = main.GenUserID
and sub.LogDateTime > main.LogDateTime)
order by GenUserID
Try with the below query.
;WITH CTE_Group
AS(
SELECT
ROW_NUMBER() OVER (PARTITION BY a.GenUserID ORDER BY b.LogDateTime DESC) as RNO,
a.GenUserID,
c.DeletionDate,
b.LogDateTime,
(CASE c.Disabled WHEN 0 THEN 'NO' else 'YES - ARCHIVED' end) IsArchived
FROM RioReport.dbo.GenUser a
LEFT JOIN dbo.GenUserArchive c on a.GenUserID = c.GenUserID
LEFT JOIN dbo.GenUserAccessHistory b on a.GenUserID = b.ExtraInfo
WHERE(a.Disabled=0 or c.Disabled=0)
AND c.DeletionDate IS NOT NULL
AND ((DateAdd(MM, -6, GetDate()) > b.LogDateTime or b.LogDateTime IS NULL)))
SELECT GenUserID,
DeletionDate,
LogDateTime,
IsArchived
FROM WITH_CTE_Group
WHERE RNO=1
Use cte and window function
;with ctr as (
select a.GenUserID, a.DeletionDate, a.LogDateTime
row_number()over(partition by a.GenUserID order by b.LogDateTime desc) rnk
from RioReport.dbo.GenUser a )
select a.GenUserID, a.DeletionDate, a.LogDateTime,
CASE WHEN DATEDIFF(mm,LogDateTime,getdate())<6 THEN 'NO' else 'YES - ARCHIVED' end)
from ctr a where a.rnk=1
I was able to create the following query after help from the post below
select * from duppri t
where exists (
select 1
from duppri
where symbolUP = t.symbolUP
AND date = t.date
and price <> t.price)
ORDER BY date
SQL to check when pairs don't match
I have now realized that I need to add a case statement to indicate when all the above criteria fits, but the type value is equal between duppri and t.duppri. This occurs because of case sensitivity. This query is an attempt to clean up a portfolio accounting system that unfortunately allowed numerous duplicates because it didn't have strong referential integrity or constraints.
I would like the case statement to produce the column 'isMatch'
Date |Type|Symbol |SymbolUP |Concatt |Price |IsMatch
6/30/1995 |gaus|313586U72|313586U72|gaus313586U72|109.25|Different
6/30/1995 |gbus|313586U72|313586U72|gbus313586U72|108.94|Different
6/30/1995 |agus|SRR |SRR |agusSRR |10.25 |Different
6/30/1995 |lcus|SRR |SRR |lcusSRR |0.45 |Different
11/27/1996|lcus|LLY |LLY |lcusLLY |76.37 |Matched
11/27/1996|lcus|lly |LLY |lcusLLY |76 |Matched
11/28/1996|lcus|LLY |LLY |lcusLLY |76.37 |Matched
11/28/1996|lcus|lly |LLY |lcusLLY |76 |Matched
I tried the following CASE statement but it is creating errors
SELECT * from duppri t
where exists (
select 1,
CASE IsMatch WHEN [type] = [t.TYPE] THEN 'Matched' ELSE 'Different' END
from duppri
where symbolUP = t.symbolUP
AND date = t.date
and price <> t.price)
ORDER BY date
You could just use window functions, if I understand correctly:
select d.*,
(case when mint = maxt
then 'Matched' else 'Different'
end)
from (select d.*,
min(type) over (partition by symbolup, date) as mint,
max(type) over (partition by symbolup, date) as maxt,
min(price) over (partition by symbolup, date) as minp,
max(price) over (partition by symbolup, date) as maxp
from duppri d
) d
where minp <> maxp
order by date;
The subquery used with the exists predicate can't and won't return anything other than true/false but you can accomplish what you want using a subquery like this, which should work:
select
*,
(select
CASE when count(distinct type) = 1 THEN 'Matched' ELSE 'Different' END
from duppri
where symbol = t.symbol and date = t.date
) IsMatch
from duppri t
where exists (
select 1
from duppri
where symbol = t.symbol
and price <> t.price);