Hey i'm kinda stuck with this query. Using SQL-server
i have in the table, UNIQUE(date, medId, userId)
I have this table
date | medId | userId | Quantity
2016-06-10 | 2 | 1 | 28
2016-06-07 | 1 | 1 | 19
2016-06-06 | 1 | 1 | 10
i want to get the row with the max date, per group of medId,userId, in this case
i would get
2016-06-10 | 2 | 1 | 28
2016-06-07 | 1 | 1 | 19
thanks in advance!
i've tried this
SELECT
a.userMedStockDate,
a.userMedStockMedId,
a.userMedStockUserId,
a.userMedStockQuantity
FROM (SELECT
MAX(userMedStockDate) AS userMedStockDate,
userMedStockQuantity,
userMedStockUserId,
userMedStockMedId,
ROW_NUMBER() OVER (partition by userMedStockMedId,userMedStockUserId
ORDER BY MAX(userMedStockDate) desc) AS rnk
FROM UserMedStock
GROUP BY
userMedStockUserId,
userMedStockQuantity,
userMedStockMedId) a
WHERE a.rnk = 1
[SOLVED]
this should work
select * from
(
select
[date] , medId, userId ,Quantity
,row_number() over (partition by medId, userId order by [date] desc) as rowid
from yourtable
) as x
where rowid = 1
Could also try this:
select y.* from
table1 y inner join
(
SELECT [Date] = MAX([Date]), medId, userId
FROM table1
GROUP BY medId, userId
) x on y.[Date] = x.[Date] and y.medId = x.medId and y.userId = x.userId
i changed the fields to my actual table but here
SELECT
a.userMedStockDate, a.userMedStockMedId, a.userMedStockUserId, a.userMedStockQuantity
FROM(
SELECT
MAX(userMedStockDate) AS userMedStockDate,
userMedStockQuantity,
userMedStockUserId,
userMedStockMedId,
ROW_NUMBER()OVER(partition by userMedStockMedId, userMedStockUserId ORDER BY MAX(userMedStockDate) desc) AS rnk
FROM UserMedStock
GROUP BY userMedStockUserId, userMedStockQuantity, userMedStockMedId
) a
WHERE a.rnk = 1
Related
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;
This is a sample table
ID | Serial | Quantity | Date_Created
-------------------------------------
1 | AS1GD | 10 | 2014-12-25 8:00:00 AM
1 | GO9A4 | 5 | 2014-12-28 9:04:32 AM
2 | JF8WS | 15 | 2014-12-29 9:23:43 AM
2 | JFLE0 | 15 | 2015-01-04 10:53:12 AM
2 | S8A4A | 10 | 2015-01-05 9:12:46 AM
3 | FXOE3 | 20 | 2015-01-03 9:31:52 AM
3 | LSOR9 | 22 | 2015-01-06 12:00:44 PM
My expected result
ID | Serial | Total_Quantity | Last_DateCreated
-------------------------------------------------
1 | GO9A4 | 15 | 2014-12-28 9:04:32 AM
2 | S8A4A | 40 | 2015-01-05 9:12:46 AM
3 | LSOR9 | 42 | 2015-01-06 12:00:44 PM
Here's a query I tried but it's not returning the sum but only the quantity of the record
WITH total AS
( SELECT [ID], [date_created], [serial], sum(quantity) as qty,
ROW_NUMBER() OVER (PARTITION BY [ID] ORDER BY [date_created] DESC) AS rownum
FROM [table]
group by ID, date_created, serial
)
SELECT ID, Serial, qty, date_created
FROM total
WHERE rownum = 1
Since you are grouping by more than the ID but want the SUM() at the ID level, you can add OVER() to your SUM():
;WITH total AS ( SELECT [ID]
, [date_created]
, [serial]
, SUM(SUM(quantity)) OVER(PARTITION BY [ID]) as qty
, ROW_NUMBER() OVER (PARTITION BY [ID] ORDER BY [date_created] DESC) AS rownum
FROM [table]
GROUP BY ID, date_created, serial
)
SELECT ID, Serial, qty, date_created
FROM total
WHERE rownum = 1
The above creates an oddity in which you need two SUM() in order to use the OVER(), but you can ditch the GROUP BY altogether in your example:
;WITH total AS ( SELECT [ID]
, [date_created]
, [serial]
, SUM(quantity) OVER(PARTITION BY [ID]) as qty
, ROW_NUMBER() OVER (PARTITION BY [ID] ORDER BY [date_created] DESC) AS rownum
FROM Table1
)
SELECT ID, Serial, qty, date_created
FROM total
WHERE rownum = 1
Demo: SQL Fiddle
This will work as long as you don't have two records with the same ID created in the same second:
WITH RecentSUM AS
(
SELECT ID, MAX(DateCreated) DateCreated, SUM(Quantity) TotalQuantity
FROM [table]
GROUP BY ID
)
SELECT t.ID, t.Serial, r.TotalQuantity, r.DateCreated
FROM RecentSUM r
INNER JOIN [table] t ON t.ID = r.ID and t.DateCreated=r.DateCreated;
This my table with sample data.
id | path | category (1-6) | secter_id | date
----------------------------------------------
1 | ddd | 5 | a | 10-01
2 | ddgg | 6 | a | 10-03
3 | fff | 5 | a | 10-02
I want to filter the latest category 5 and 6 rows for each sector id.
Expected result
id path | category| secter_id | date
--------------------------------------
2 | ddgg | 6 | a | 10-03
3 | fff | 5 | a | 10-02
Is this possible do only sql?
This query should do it for you
SELECT A.ID,
A.PATH,
A.CATEGORY,
A.SECTOR_ID,
A.dDATE
FROM yourTable A
INNER JOIN
(SELECT CATEGORY,
MAX(dDate) AS dDate
FROM yourTable
GROUP BY CATEGORY) B
ON A.CATEGORY = B.CATEGORY
AND A.dDate = B.dDate
Here is a SQLFiddle with the query
You can try with this code, is not elegant but it should work.
Select id,path,category,secter_id,date
FROM myTable a
INNER JOIN (SELECT category, MAX(date) date FROM myTable GROUP BY Category) b ON a.category = b.Category AND a.date = b.Date
WHERE A.Category IN (5,6)
You can try this -
SELECT id,path,category,secter_id, date
FROM
(
SELECT id,path,category,secter_id, date,
DENSE_RANK() OVER (PARTITION BY category ORDER BY DATE DESC) date_rank
FROM sample_table t
WHERE category in (5,6)
)
WHERE date_rank = 1;
try this
select path,category,secter_id,date from
(
select path,category,secter_id,date,dense_rank() over(PARTITION by category order by date desc)as rk
from tbl WHERE category in (5,6)
)data
where rk=1
select * from (
select
id, path , category, secter_id, date ,
row_number() over (partition by category order by date desc) as rnk
from your_table
)
where rnk = 1;
Try this
SELECT [id]
,[path]
,[category]
,[secter_id]
,[date]
FROM [MyTable]
WHERE date IN (SELECT MAX(date)
FROM [MyTable]
WHERE category IN (SELECT DISTINCT category FROM MyTable)
GROUP BY category)
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.