Consider below table.
ID UserCount
----------- -----------
1 2
2 3
3 5
How can i add the another column (SequenceUserCount) with UserCount adding sequentialy.
Expected result:
ID UserCount SequenceUserCount
----------- ----------- ------------------
1 2 2
2 3 5
3 5 10
You can do this:
;WITH CTE
AS
(
SELECT *,
ROW_NUMBER() OVER(ORDER BY usercount) rownum
FROM #table1
)
SELECT
c1.id,
c1.usercount,
SequenceUserCount = (SELECT SUM(c2.usercount)
FROM cte c2
WHERE c2.rownum <= c1.rownum)
FROM CTE c1;
SQL Fiddle Demo
This will give you:
| ID | USERCOUNT | SequenceUserCount |
--------------------------------------
| 1 | 2 | 2 |
| 2 | 3 | 5 |
| 3 | 5 | 10 |
Or: You can use JOIN instead of a correlated subquery, like so:
;WITH CTE
AS
(
SELECT *,
ROW_NUMBER() OVER(ORDER BY usercount) rownum
FROM #table1
)
SELECT
c1.id,
c1.usercount,
SequenceUserCount = SUM(c2.usercount)
FROM CTE c1
INNER JOIN CTE c2 ON c2.rownum <= c1.rownum
GROUP BY c1.id, c1.usercount;
try this
select id,
usercount
sum(usercount) over(order by usercount rows unbounded preceding)
as sequenceusercount
from Table
Related
I have a table like this:
treatment | patient_id
3 | 1
3 | 1
3 | 1
2 | 1
2 | 1
1 | 1
2 | 2
2 | 2
1 | 2
I need to get only rows on max(treatment) like this:
treatment | patient_id
3 | 1
3 | 1
3 | 1
2 | 2
2 | 2
The patient_id 1 the max(treatment) is 3
The patient_id 2 the max(treatment) is 2
You can for example join on the aggregated table using the maximal value:
select t.*
from tmp t
inner join (
select max(a) max_a, b
from tmp
group by b
) it on t.a = it.max_a and t.b = it.b;
Here's the db fiddle.
Try this :
WITH list AS
( SELECT patient_id, max(treatment) AS treatment_max
FROM your_table
GROUP BY patient_id
)
SELECT *
FROM your_table AS t
INNER JOIN list AS l
ON t.patient_id = l.patient_id
AND t.treatment = l.treatment_max
You can use rank:
with u as
(select *, rank() over(partition by patient_id order by treatment desc) r
from table_name)
select treatment, patient_id
from u
where r = 1;
Fiddle
use corelated subquery
select t1.* from table_name t1
where t1.treatment=( select max(treatment) from table_name t2 where t1.patient_id=t2.patient_id
)
My first time writing a recursive CTE in SQL to calculate the rolling returns.
Formula : 100*(1+Returns) for first value, and then (RollingReturns)*(1+Returns)
The table is as below:
+----+--------+--------+----------------+
| ID | Date | Return | RollingReturns |
+----+--------+--------+----------------+
| 1 | 1/1/20 | 0.50% | 100.5 |
| 1 | 1/2/20 | 1.00% | 101.51 |
| 1 | 1/3/20 | -0.7% | 100.74 |
| 1 | 1/4/20 | 0.50% | 101.25 |
+----+--------+--------+----------------+
My attempt at writing the SQL query:
WITH rn_cte AS (
SELECT ROW_NUMBER() OVER (ORDER BY DATE ASC) AS RN, DATE
FROM TABLE WHERE ID = 1
ORDER BY RN
)
rr_cte
AS
(
SELECT RN,P.DATE,RETURNS,RETURNS AS ROLLINGRETURNS
FROM TABLE P
JOIN rn_cte ON rn_cte.DATE = p.DATE
WHERE P.ID = 1 AND RN = 1
UNION ALL
SELECT RN,pm.DATE,pm.RETURNS,(rr_cte.ROLLINGRETURNS)*(1+pm.RETURNS) AS ROLLINGRETURNS
FROM TABLE pm WHERE pm.ID = 1
JOIN rr_cte ON rr_cte.RN = pm.RN+1
ORDER BY pm.DATE ASC
)
SELECT *
FROM rr_cte
It gives me an error, not sure what is wrong in it.
Error
^found "RR_CTE" (at char 145) expecting `SELECT' or `'(''
Any help is appreciated.
Thanks in advance!
You want something like this:
WITH rn AS (
SELECT ROW_NUMBER() OVER (PARTITION BY id ORDER BY DATE ASC) AS RN, t.*
FROM TABLE t
WHERE ID = 1
),
cte AS (
SELECT rn.rn, rn.id, rn.date, return,
100 * (1 + rn.return) as rollingreturn
FROM rn
UNION ALL
SELECT rn.rn, rn.id, rn.date, rn.return,
cte.rollingreturn * (1 + rn.return)
FROM cte JOIN
rn
ON cte.id = rn.id AND rn.rn = cte.rn + 1
)
SELECT *
FROM cte;
I'm using Oracle 11G and need a way to turn rows into new groups of columns in a select statement. We're transitioning to a 1:3 relationship for some of our data and need a way to get it into a view. Can you help us transform data that looks like this:
+---------+------------+
| User_Id | Station_Id |
+---------+------------+
| 1 | 203 |
| 1 | 204 |
| 2 | 203 |
| 3 | 487 |
| 3 | 3787 |
| 3 | 738 |
+---------+------------+
into this:
+---------+-------------+-------------+---------------+
| User_Id | Station_One | Station_Two | Station_Three |
+---------+-------------+-------------+---------------+
| 1 | 203 | 204 | Null |
| 2 | 203 | Null | Null |
| 3 | 487 | 3787 | 738 |
+---------+-------------+-------------+---------------+
Let me know what ever other specifics you would like and thank you for any help you can give!
You can use row_number and self joins:
with cte as
(
select userid, stationid,
row_number() over(partition by userid order by stationid) rn
from tbl
)
select distinct c1.userid,
c1.stationid station_one,
c2.stationid station_two,
c3.stationid station_three
from cte c1
left join cte c2 on c1.userid=c2.userid and c2.rn=2
left join cte c3 on c1.userid=c3.userid and c3.rn=3
where c1.rn=1
See the demo
You can also do it with row_number and subqueries:
with cte as
(
select userid, stationid,
row_number() over(partition by userid order by stationid) rn
from tbl
)
select distinct userid,
(select stationid from cte c where c.userid=cte.userid and c.rn=1) station_one,
(select stationid from cte c where c.userid=cte.userid and c.rn=2) station_two,
(select stationid from cte c where c.userid=cte.userid and c.rn=3) station_three
from cte
See the demo
The easiest way to accomplish this in my experience is to use conditional aggregation:
WITH mydata AS (
SELECT 1 AS user_id, 203 AS station_id FROM dual
UNION ALL
SELECT 1 AS user_id, 204 AS station_id FROM dual
UNION ALL
SELECT 2 AS user_id, 203 AS station_id FROM dual
UNION ALL
SELECT 3 AS user_id, 487 AS station_id FROM dual
UNION ALL
SELECT 3 AS user_id, 3787 AS station_id FROM dual
UNION ALL
SELECT 3 AS user_id, 738 AS station_id FROM dual
)
SELECT user_id
, MAX(CASE WHEN rn = 1 THEN station_id END) AS station_one
, MAX(CASE WHEN rn = 2 THEN station_id END) AS station_two
, MAX(CASE WHEN rn = 3 THEN station_id END) AS station_three
FROM (
SELECT user_id, station_id, ROW_NUMBER() OVER ( PARTITION BY user_id ORDER BY rownum ) AS rn
FROM mydata
) GROUP BY user_id;
Just replace the mydata CTE in the above query with whatever your table's name is:
SELECT user_id
, MAX(CASE WHEN rn = 1 THEN station_id END) AS station_one
, MAX(CASE WHEN rn = 2 THEN station_id END) AS station_two
, MAX(CASE WHEN rn = 3 THEN station_id END) AS station_three
FROM (
SELECT user_id, station_id, ROW_NUMBER() OVER ( PARTITION BY user_id ORDER BY rownum ) AS rn
FROM mytable
) GROUP BY user_id;
I need to count the changes in assigned group on a ticket. The problem is my log also count changes in assignee that are in the same group.
Here is some sample data
ticket_id | assigned_group | assignee | date
----------------------------------------------------
1001 | group A | john | 1-1-15
1001 | group A | michael | 1-2-15
1001 | group A | jacob | 1-3-15
1001 | group B | eddie | 1-4-15
1002 | group A | john | 1-1-15
1002 | group B | eddie | 1-2-15
1002 | group A | john | 1-3-15
1002 | group B | eddie | 1-4-15
1002 | group A | john | 1-5-15
I need this to return
ticket_id | count
--------------------
10001 | 2
10002 | 4
My query is like this
select ticket_id, assigned_group, count(*) from mytable group by ticket_id, assigned_group
But that gives me
ticket_id | count
--------------------
10001 | 4
10002 | 5
edit:
Also if I use
select ticket_id, count(Distinct assigned_group) as [Count] from mytable group by ticket_id
I only get
ticket_id | count
--------------------
10001 | 2
10002 | 2
Any advice?
Use Distinct Count to get the result
select ticket_id, count(Distinct assigned_group) as [Count]
from mytable
group by ticket_id
try this..
with temp as
(
select ticket_id, assigned_group, count(*) as count,date from mytable group by ticket_id, assigned_group,date
)
select ticket_id, count from temp
You can use Row_number() function to look into the next record's value.
with tbl as (select *, row_number() over(partition by ticket_id order by 1) from table)
select a.ticket_id, a.assigned_group, a.assignee_name, a.date,
count(case when a.assigned_group <> b.assigned_group then 1 else 0 end) as No_of_change
from tbl as a
left join tbl as b
on a.rn = b.rn + 1
If you are using SQL Server 2012, then you can use the LAG function to determine the previous assigned group easily. Then, if the previous assigned group is different from the current assigned group, you can increment the count, as below:
WITH previous_groups AS
(
SELECT
ticket_id,
assign_date,
assigned_group,
LAG(assigned_group, 1, NULL) OVER (PARTITION BY ticket_id ORDER BY assign_date) AS prev_assign_group
FROM mytable
)
SELECT
ticket_id,
SUM(CASE
WHEN assigned_group <> prev_assign_group THEN 1
ELSE 0
END) AS count
FROM previous_groups
WHERE prev_assign_group IS NOT NULL
GROUP BY ticket_id
ORDER BY ticket_id;
If you are using SQL Server 2008 or earlier versions, then you need an extra step to determine the previous assigned group, as below:
WITH previous_assign_dates AS
(
SELECT
mt1.ticket_id,
mt1.assign_date,
MAX(mt2.assign_date) AS prev_assign_date
FROM mytable mt1
LEFT JOIN mytable mt2
ON mt1.ticket_id = mt2.ticket_id
AND mt2.assign_date < mt1.assign_date
GROUP BY
mt1.ticket_id,
mt1.assign_date
),
previous_groups AS
(
SELECT
mt1.*,
mt2.assigned_group AS prev_assign_group
FROM mytable mt1
INNER JOIN previous_assign_dates pad
ON mt1.ticket_id = pad.ticket_id
AND mt1.assign_date = pad.assign_date
LEFT JOIN mytable mt2
ON pad.ticket_id = mt2.ticket_id
AND pad.prev_assign_date = mt2.assign_date
)
SELECT
ticket_id,
SUM(CASE
WHEN assigned_group <> prev_assign_group THEN 1
ELSE 0
END) AS count
FROM previous_groups
WHERE prev_assign_group IS NOT NULL
GROUP BY ticket_id
ORDER BY ticket_id;
SQL Fiddle demo
References:
The LAG function on MSDN
Adding an ordinal number within the ticket, then a self join where the group is different and consecutive ordinals, should work:
SELECT t1.ticket_id, COUNT(*) FROM
(SELECT *, ROW_NUMBER() OVER(PARTITION BY ticket_id ORDER BY date) ordinal
FROM mytable) t1
JOIN
(SELECT *, ROW_NUMBER() OVER(PARTITION BY ticket_id ORDER BY date) ordinal FROM nytable) t2
ON t1.ticket_id=t2.ticket_id AND t1.assigned_group<>t2.assigned_group AND t1.ordinal+1=t2.ordinal
GROUP BY t1.ticket_id
I need help with a t-sql query.
I have a table with this structure:
id | OverallRank | FirstRank | SecondRank | Nrank..
1 | 10 | 20 | 30 | 5
2 | 15 | 24 | 12 | 80
3 | 10 | 40 | 37 | 12
I need a query that produces this kind of result:
When id: 1
id | OverallRank | BestRankLabel | BestRankValue | WorstRankLabel | WorkRankValue
1 | 10 | SecondRank | 30 | Nrank | 5
When id: 2
id | OverallRank | BestRankLabel | BestRankValue | WorstRankLabel | WorkRankValue
1 | 15 | FirstRank | 24 | SecondRank | 12
How can I do it?
Thanks in advance
with cte(id, RankValue,RankName) as (
SELECT id, RankValue,RankName
FROM
(SELECT id, OverallRank, FirstRank, SecondRank, Nrank
FROM ##input) p
UNPIVOT
(RankValue FOR RankName IN
(OverallRank, FirstRank, SecondRank, Nrank)
)AS unpvt)
select t1.id, max(case when RankName = 'OverallRank' then RankValue else null end) as OverallRank,
max(case when t1.RankValue = t2.MaxRankValue then RankName else null end) as BestRankName,
MAX(t2.MaxRankValue) as BestRankValue,
max(case when t1.RankValue = t3.MinRankValue then RankName else null end) as WorstRankName,
MAX(t3.MinRankValue) as WorstRankValue
from cte as t1
left join (select id, MAX(RankValue) as MaxRankValue from cte group by id) as t2 on t1.id = t2.id
left join (select id, min(RankValue) as MinRankValue from cte group by id) as t3 on t1.id = t3.id
group by t1.id
Working good with your test data. You should only edit RankName IN (OverallRank, FirstRank, SecondRank, Nrank) by adding right columns' names.
CASE
WHEN OverallRank > FirstRank and OverallRank > FirstSecondRand and OverallRank > nRank THEN 'OverallRank'
WHEN FirstRank > OverallRank ... THEN 'FirstRank'
END
This kind of query is why you should normalise your data.
declare #id int, #numranks int
select #id = 1, #numranks = 3 -- number of Rank columns
;with cte as
(
select *
from
(
select *,
ROW_NUMBER() over (partition by id order by rank desc) rn
from
(
select * from YourBadlyDesignedTable
unpivot (Rank for RankNo in (FirstRank, SecondRank, ThirdRank))u -- etc
) v2
) v1
where id=#id and rn in (1, #numranks)
)
select
tMin.id,
tMin.OverallRank,
tMin.RankNo as BestRankLabel,
tMin.Rank as BestRankValue,
tMax.RankNo as WorstRankLabel,
tMax.Rank as WorstRankValue
from (select * from cte where rn=1) tMin
inner join (select * from cte where rn>1) tMax
on tMin.id = tmax.id
You can take out the id = #id if you want all rows.