Can you help me with SQL statements to find minimum non duplicated value?
This is my sql statement
DECLARE #currentDate DATETIME = CONVERT(VARCHAR(10), Getdate(), 120)
UPDATE Dinfo
SET WinnerID = result.CustomerID
FROM Daily_Info Dinfo
JOIN (SELECT CO.DailyInfoID,
CO.CustomerID
FROM Customer_Offer CO
WHERE CO.OfferDate = #currentDate
GROUP BY CO.DailyInfoID,
CO.CustomerID
HAVING ( Count(CO.OfferPrice) = 1 )) result
ON Dinfo.DailyID = result.DailyInfoID
and i want to update my winner who offered minimum unique offer. How can i select it?
If you want to find data, then I would expect a select. I think the following query might do what you want:
select min(offerprice)
from (select co.*, count(*) over (partition by co.offerprice) as cnt
from Customer_Offer co
where CO.OfferDate = #currentDate
) co
where cnt = 1;
If you want to update information based on this, then use join:
update dinfo
set winnerId = c.CustomerId
from dinfo cross join
(select top 1 co.*
from (select co.*, count(*) over (partition by co.offerprice) as cnt
from Customer_Offer co
where CO.OfferDate = #currentDate
) co
where cnt = 1
order by offerprice
) c
This follows the structure of your query, but it is going to update all rows in dinfo. You might want some other conditions to so only one row is updated.
Related
I'm fetching record of players having categorized with golf handicaps. Like players having handicap between 0 to 5 lies in 0-5 range and similarly having handicap between 6-11 lies in the range of 6-11 and so on and so forth. What I'm trying is to fetch top 3 players from each range so that I can setup flights for each rounds.
I have used partition by clause to separate records and ROW_NUMBER to get top 3 players from each range. In order to define ranges, i have used multiple cases. Now how do i use range as alias name with partition by or any way that can generate the correct result. Below is my query.
select * from (
select uu.Id, firstname, lastname, userhandicap,
case when userhandicap>=0 and userhandicap<=5 then '0-5'
when userhandicap>=6 and userhandicap<=11 then '6-11'
when UserHandicap>=12 and UserHandicap<=18 then '12-18'
when UserHandicap>=19 and UserHandicap<=26 then '19-26'
else '27 and above' end as range, RN = ROW_Number() over (PARTITION BY
range order by cast(userhandicap as int))
from dbo.[User] uu inner join dbo.[EventRegisteredUsers] eru
on uu.Id = eru.UserId
where eru.UserId not in (Select fp.UserId from dbo.[FlightPlayer] fp
inner join dbo.[Flight] f
on fp.FlightId = f.Id
where f.Rounds = '1'
and f.Starthole = '0a9b926e-0baa-4369-8cf8-8fc84ca80d65' and f.EventId =
'7de10ad6-098d-419f-9c2d-2e62803ad1f7')
and eru.EventId = '7de10ad6-098d-419f-9c2d-2e62803ad1f7') uu
WHERE
uu.RN <= 3
You can use apply to define the range value within the subquery. This is the simplest method for defining the range:
select *
from (select uu.Id, firstname, lastname, userhandicap,
row_number() over (partition by v.range order by cast(userhandicap as int)) as seqnum
from dbo.[User] uu inner join
dbo.[EventRegisteredUsers] eru
on uu.Id = eru.UserId cross apply
(values (case when userhandicap <= 5 then '0-5'
when userhandicap <= 11 then '6-11'
when UserHandicap <= 18 then '12-18'
when UserHandicap <= 26 then '19-26'
else '27 and above'
end)
) v(range)
where not exists (select 1
from dbo.[FlightPlayer] fp join
dbo.[Flight] f
on fp.FlightId = f.Id
where eru.UserId = fp.UserId and
f.Rounds = '1' and
f.Starthole = '0a9b926e-0baa-4369-8cf8-8fc84ca80d65' and
f.EventId = '7de10ad6-098d-419f-9c2d-2e62803ad1f7'
) and
eru.EventId = '7de10ad6-098d-419f-9c2d-2e62803ad1f7'
) uu
where uu.seqnum <= 3;
Note other changes to the query:
Don't use not in with a subquery. If the subquery returns a NULL value, then all values are filtered out. That is not (usually) the expected behavior.
The case expression is overly complicated. Use the fact that case is guaranteed to evaluate the conditions in order.
You should qualify all column names in a query that has more than one query. However, it is unclear where the columns come from.
Presumably handicap is not ever negative, based on your original logic (and the rules of golf), so I am comfortable removing that condition.
use cte
with cte as
(
select uu.Id, firstname, lastname, userhandicap,
case when userhandicap>=0 and userhandicap<=5 then '0-5'
when userhandicap>=6 and userhandicap<=11 then '6-11'
when UserHandicap>=12 and UserHandicap<=18 then '12-18'
when UserHandicap>=19 and UserHandicap<=26 then '19-26'
else '27 and above' end as range
from dbo.[User] uu inner join dbo.[EventRegisteredUsers] eru
on uu.Id = eru.UserId
where eru.UserId not in (Select fp.UserId from dbo.[FlightPlayer] fp
inner join dbo.[Flight] f
on fp.FlightId = f.Id
where f.Rounds = '1'
and f.Starthole = '0a9b926e-0baa-4369-8cf8-8fc84ca80d65' and f.EventId =
'7de10ad6-098d-419f-9c2d-2e62803ad1f7')
and eru.EventId = '7de10ad6-098d-419f-9c2d-2e62803ad1f7'
), t2 as
(
select *,row_number() over(partition by range order by cast(userhandicap as int) rn from cte
) select * from t2 where rn<=3
I am trying to ignore duplicate records in CTE but I am not able to do that, It seems like a SELECT statement inside CTE does not allow to use ROWNUM() variable numrows to condition in WHERE clause as it is showing Invalid column name 'numrows' error while trying to do so.
SQL Query:
DECLARE #BatchID uniqueidentifier = NEWID();
DECLARE #ClusterID SMALLINT = 1;
DECLARE #BatchSize integer = 20000;
DECLARE #myTableVariable TABLE(EventID BIGINT,HotelID int, BatchStatus varchar(50),BatchID uniqueidentifier);
WITH PendingExtResSvcEventsData_Batch
AS(
SELECT TOP (#BatchSize) t.EventID, t.HotelID, t.BatchStatus, t.BatchID, ROW_NUMBER() OVER (PARTITION BY t.EventID ORDER BY t.EventID) numrows
FROM ExtResSvcPendingMsg t WITH (NOLOCK)
WHERE t.ClusterID = #ClusterID AND numrows = 1 AND NOT EXISTS -- not allowed to use WHERE numrows = 1 here showing *Invalid Column Name*
(select 1 from ExtResSvcPendingMsg t2 where t2.BatchStatus = 'Batched'
and t2.EventID = t.EventID and t2.HotelID = t.HotelID)
)
UPDATE PendingExtResSvcEventsData_Batch
SET BatchStatus='Batched',
BatchID = #BatchID
-- WHERE numrows = 1 (not allowed to use WHERE here because of OUTPUT Clause)
OUTPUT INSERTED.* INTO #myTableVariable
SELECT e.ExtResSvcEventID,e.HotelID,e.ID1,e.ID2,e.ExtResSvcEventType,e.HostID,e.StatusCode,e.ChannelID,e.RequestAtTime,e.ProcessTime,e.DateBegin,e.DateEnd,
e.StatusMsg,em.MsgBodyOut,em.MsgBodyIn,e.ChannelResID
FROM ExtResSvcEvent e WITH (NOLOCK)
INNER JOIN #myTableVariable t ON e.ExtResSvcEventID = t.EventID
INNER JOIN ExtResSvcEventXML em with (nolock) on t.EventID = em.ExtResSvcEventID
ORDER BY e.ExtResSvcEventID
I have also tried to use numrows in final SELECT like INNER JOIN #myTableVariable t ON e.ExtResSvcEventID = t.EventID AND t.numrows = 1 but this gives me a error i.e. The column reference "inserted.numrows" is not allowed because it refers to a base table that is not being modified in this statement.
How do I ignore the duplicate records while using SELECT in CTE?
You can't refer to the numrows column in the WHERE clause of the CTE because that column is not calculated at this point in the plan execution. You need to add a second CTE with a select statement where you can refer to the numrows column:
WITH Base AS (
SELECT TOP (#BatchSize) t.EventID, t.HotelID, t.BatchStatus, t.BatchID, ROW_NUMBER() OVER (PARTITION BY t.EventID ORDER BY t.EventID) numrows
FROM ExtResSvcPendingMsg t WITH (NOLOCK)
WHERE t.ClusterID = #ClusterID
AND NOT EXISTS (select 1 from ExtResSvcPendingMsg t2 where t2.BatchStatus = 'Batched' and t2.EventID = t.EventID and t2.HotelID = t.HotelID)
), PendingExtResSvcEventsData_Batch AS (
SELECT EventID,
HotelID,
BatchStatus,
BatchID
WHERE numrows = 1
)
UPDATE...
I can't vouch for the update statement working as you expect it but the PendingExtResSvcEventsData_Batch should now have one row per EventID.
I'm having difficult with a subquery. In plain English I'm trying to pick a random userID from the QCUsers table that has less than 20 records from the QCTier1_Assignments table. The problem is that my query below is only picking users where it meets the criteria of the inner query when I need it to pick any user from QCUsers table even if the user does not have any records at all in the QCTier1_Assignments table. I need something like this
AND (Sub.QCCount < 20 OR Sub.QCCount = 0 )
DECLARE #ReviewPeriodMonth varchar(10) = '10'
DECLARE #ReviewPeriodYear varchar(10) = '2015'
SELECT TOP 1
E1.UserID
,Sub.QCCount --Drawn from the subquery
FROM QCUsers E1
JOIN (SELECT
QCA.UserID,
COUNT(*) AS QCCount
FROM QCTier1_Assignments QCA
WHERE QCA.ReviewPeriodMonth = #ReviewPeriodMonth
AND QCA.ReviewPeriodYear = #ReviewPeriodYear
GROUP BY QCA.UserID
) Sub
ON E1.UserID = Sub.UserID
WHERE Active = 1
AND Grade = 12
AND Sub.QCCount < 20
ORDER BY NEWID()
I also tried it this way with no luck
DECLARE #ReviewPeriodMonth varchar(10) = '10'
DECLARE #ReviewPeriodYear varchar(10) = '2015'
SELECT TOP 1
E1.UserID
,Sub.QCCount --Drawn from the subquery
FROM QCUsers E1
RIGHT JOIN (SELECT
QCA.UserID,
ReviewPeriodMonth,
ReviewPeriodYear,
COUNT(*) AS QCCount
FROM QCTier1_Assignments QCA
GROUP BY
QCA.UserID,
ReviewPeriodMonth,
ReviewPeriodYear
) Sub
ON E1.UserID = Sub.UserID
WHERE Active = 1
AND Grade = 12
AND Sub.QCCount < 20
AND Sub.ReviewPeriodMonth = #ReviewPeriodMonth
AND Sub.ReviewPeriodYear = #ReviewPeriodYear
ORDER BY NEWID()
Try using your second query but change the WHERE clause to use COALESCE(Sub.QCCount, 0) instead of justSub.QCCount`
If the subquery returns no rows then with your RIGHT JOIN you'll at least still get the row, but the QCCount will be NULL which when compared to anything will result in a "false" effectively.
Also, you should look into the HAVING clause. It might allow you to do this without a subquery at all.
Here's an example with the HAVING clause. If it doesn't give the correct results please let me know as I'm not able to test this.
DECLARE
#ReviewPeriodMonth VARCHAR(10) = '10'
#ReviewPeriodYear VARCHAR(10) = '2015'
SELECT TOP 1
E1.UserID,
COUNT(QCA.UserID) AS QCCount
FROM
QCUsers E1
LEFT OUTER JOIN QCTier1_Assignments QCA ON
QCA.UserID = E1.UserID AND
QCA.ReviewPeriodMonth = #ReviewPeriodMonth AND
QCA.ReviewPeriodYear = #ReviewPeriodYear
WHERE
E1.Active = 1 AND
Grade = 12 AND
HAVING
COUNT(*) < 20
ORDER BY
NEWID()
You should use LEFT JOIN instead of JOIN(INNER JOIN), And you'd better to put the predicate to the outer query based on your practice, but I recommend the following way:
SELECT TOP1 ABC.UserID,ABC.QCCount
FROM
(
SELECT E1.UserID, COUNT(*) as QCCount
FROM QCUsers as E1
LEFT JOIN QCTier1_Assignments as QCA
ON QCA.UserID = E1.UserID
WHERE QCA.ReviewPeriodMonth = #ReviewPeriodMonth
AND QCA.ReviewPeriodYear = #ReviewPeriodYear
AND Active = 1
AND Grade = 12
GROUP BY E1.UserID
) as ABC
WHERE ABC.QCCount <20
ORDER BY NEWID()
I was able to work it out through a combination of responses here
DECLARE #ReviewPeriodMonth varchar(10) = '10'
DECLARE #ReviewPeriodYear varchar(10) = '2015'
SELECT TOP 1
QCUsers.UserID,
COUNT(QCTier1_Assignments.ReviewID) AS ReviewCount
FROM
QCTier1_Assignments RIGHT OUTER JOIN
QCUsers ON QCTier1_Assignments.UserID = QCUsers.UserID
WHERE
QCUsers.Active = 1
AND QCUsers.Grade = '12'
AND (ReviewPeriodMonth = #ReviewPeriodMonth OR ReviewPeriodMonth IS NULL)
AND (ReviewPeriodYear = #ReviewPeriodYear OR ReviewPeriodYear IS NULL)
GROUP BY
QCUsers.UserID
HAVING
(COALESCE(COUNT(QCTier1_Assignments.ReviewID),0) < 4)
ORDER BY NEWID()
Below I am trying to update value of a parent table from child table and counting matching values. Tables in my db:
issue_dimension with id = issue_id and have column accno.
star_schema with id star_id,this Child column have fk issue_id and column book_frequency
The book_frequency need to match the count of each accno in parent table , I tried this
update [test1] .[dbo] .star_schema
set [book_frequency] = (
select top 1 COUNT([issue_dimension].ACCNO)as book_frequency
from issue_dimension
group by ACCNO having (COUNT(*)>1) and
issue_dimension.ACCNO = star_schema .ACCNO
)
It only updates only 1st value count issue_dimension. I need to count every accno in issue_dimension and update it to matching accno of star_schema.
I never did update by joining two or more tables , can anyone help in this with joins
UPDATE s
SET [book_frequency] = i.CNT
FROM [test1].[dbo].star_schema s
INNER JOIN
(
SELECT ACCNO, COUNT(*) as CNT
FROM issue_dimension
GROUP BY ACC_NO
HAVING COUNT(*)>1
) i on (s.ACCNO = i.ACCNO)
I didn't check it but it should works
Try in this way, without grouping, just with the WHERE clause:
UPDATE [test1].[dbo].star_schema SET
[book_frequency] =
(
SELECT COUNT([issue_dimension].ACCNO)
FROM issue_dimension
WHERE issue_dimension .ACCNO = star_schema.ACCNO
HAVING COUNT(*)>1
)
It's not fully clear to me so the answer is a bit of guessing:
update s set
book_frequency = t.qty
from star_schema s
join issue_dimension i on s.issue_id = s.issue_id
join (select count(*) as qty, accno
from issue_dimension
group by accno
) t on i.accno = t.accno
Here's the example from BOL that does the kind of thing you're looking for, using AW:
USE AdventureWorks2008R2;
GO
UPDATE Sales.SalesPerson
SET SalesYTD = SalesYTD +
(SELECT SUM(so.SubTotal)
FROM Sales.SalesOrderHeader AS so
WHERE so.OrderDate = (SELECT MAX(OrderDate)
FROM Sales.SalesOrderHeader AS so2
WHERE so2.SalesPersonID = so.SalesPersonID)
AND Sales.SalesPerson.BusinessEntityID = so.SalesPersonID
GROUP BY so.SalesPersonID);
I have a query that returns a bunch of rows.
But using the same query i would like to:
1. get the total row count in the table
2. get the row number where a certian username is located
Right now im doing like so:
BEGIN
DECLARE #startRowIndex INT;
DECLARE #PageIndex INT;
DECLARE #RowsPerPage INT;
SET #PageIndex = 0;
SET #RowsPerPage = 15;
SET #startRowIndex = (#PageIndex * #RowsPerPage) + 1;
WITH messageentries
AS (SELECT Row_number()
OVER(ORDER BY score DESC) AS row,
Count(DISTINCT town.townid) AS towns,
user_details.username,
user_score.score,
allience.alliencename,
allience.allienceid,
allience.alliencetagname,
(SELECT Count(* ) FROM user_details) AS numberofrows
FROM user_details
INNER JOIN user_score
ON user_details.username = user_score.username
INNER JOIN town
ON user_details.username = town.townownername
LEFT OUTER JOIN allience_roles
ON user_details.useralliencerole = allience_roles.roleid
LEFT OUTER JOIN allience
ON allience_roles.allienceid = allience.allienceid
GROUP BY user_details.username,
user_score.score,
allience.alliencename,
allience.allienceid,
allience.alliencetagname)
SELECT *, (SELECT row FROM messageentries WHERE username = 'myUsername') AS myself
FROM messageentries
WHERE row BETWEEN #startRowIndex AND #StartRowIndex + #RowsPerPage - 1
END
That works, but isn't the two nested selects going to run once for every row in the table? :/
...
(SELECT Count(* ) FROM user_details) AS numberofrows
...
(SELECT row FROM messageentries WHERE username = 'myUsername') AS myself
So my question being how can i get the values i want as "low-cost" as possible, and preferably in the same query?
Thanks in advance :)
try this...
DECLARE #NumberOfRows INT
SELECT #NumberOfRows = Count(* ) FROM user_details
WITH messageentries
AS (SELECT Row_number()
OVER(ORDER BY score DESC) AS row,
Count(DISTINCT town.townid) AS towns,
user_details.username,
user_score.score,
allience.alliencename,
allience.allienceid,
allience.alliencetagname,
#NumberOfRows AS numberofrows
FROM user_details
INNER JOIN user_score
ON user_details.username = user_score.username
INNER JOIN town
ON user_details.username = town.townownername
LEFT OUTER JOIN allience_roles
ON user_details.useralliencerole = allience_roles.roleid
LEFT OUTER JOIN allience
ON allience_roles.allienceid = allience.allienceid
GROUP BY user_details.username,
user_score.score,
allience.alliencename,
allience.allienceid,
allience.alliencetagname)
SELECT *, MyRowNumber.row AS myself
FROM messageentries,
(SELECT row FROM messageentries WHERE username = 'myUsername') MyRowNumber
WHERE row BETWEEN #startRowIndex AND #StartRowIndex + #RowsPerPage - 1
(SELECT Count(* ) FROM user_details)
This one will be cached (most probably materialized in a Worktable).
(SELECT row FROM messageentries WHERE username = 'myUsername')
For this one, most probably a Lazy Spool (or Eager Spool) will be built, which will be used to pull this value.