Select Top N Results In A Group; Count(*)&<=n
Jan 18, 2003
Two tables: CompanyPrices(CompanyID, ProductID, Price), CompanyRegion(CompanyID, Region)
ProductID is the primary key.
I want to get 10 smallest prices in each Region. In other words, I am looking for 10 cheapest prices in each region. So, if there are 20 regions, I should get excatly 200 rows having prices for products from 200 companies if there were at least 10 companies in each region.
I tried the follwoing, but get incorrect results.
select S1.Region, S1.Price from (select CompanyPrices.*, Region from CompanyPrices inner join CompanyRegion on CompanyPrices.CompanyID=CompanyRegion.CompanyID) S1 inner join
(select CompanyPrices.*, Region from CompanyPrices inner join CompanyRegion on CompanyPrices.CompanyID=CompanyRegion.CompanyID) S2 on S1.Region = S2.Region
group by S1.Region, S1.Price having count(*)<=10 order by S1.Region, S1.Price
However, if I want to get 10 cheapest products for each company, the above sql works by modifying the join condition. Instead of S1.Region = S2.Region , I use S1.CompanyID = S2.CompanyID and I get correct results for 10 cheapest products for each company.
select S1.CompanyID, S1.Price from (select CompanyPrices.*, Region from CompanyPrices inner join CompanyRegion on CompanyPrices.CompanyID=CompanyRegion.CompanyID) S1 inner join
(select CompanyPrices.*, Region from CompanyPrices inner join CompanyRegion on CompanyPrices.CompanyID=CompanyRegion.CompanyID) S2 on S1.CompanyID = S2.CompanyID
group by S1.CompanyID, S1.Price having count(*)<=10 order by S1.CompanyID, S1.Price
I am not sure what is wrong in the first query and why it does not work when the second one works. Could someone help in making the first query work to give me correct results?
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Jun 6, 2008
Hey all - VERY new to SQL so I apologize if I butcher normally trivial things :)
Looking to run a query that will retrieve the number of results returned from a select statement...
Currently have a LicenseID table with a Software column...the statement that works on it's own that i've got is:
SELECT * FROM Software WHERE LicensesID = 2
Currently when I run that with the data so far I get 4 results returned to me...how can I add to that statement so that instead of displaying the results themselves, I just get the number 4 returned as a total number of results?
Thanks all!
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Jul 16, 2006
Hello
I want to get the COUNT of
SELECT MAX(id) AS ids, Name, Version, Pack, Serial
FROM Products
GROUP BY Name, Version, Pack, Serial
SELECT COUNT(MAX(id) AS ids) AS countIds, Name, Version, Pack, Serial
FROM Products
GROUP BY Name, Version, Pack, Serial
doesnt work
thank you
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Jul 3, 2015
I am using SQL 2012. I have a GROUP BY and I want to select two other fields from my table at the same time: One column that is a string (account_code) and one that I need to perform a count on (customer_number). I know the code COUNT(DISTINCT customer_number) works for getting that. I need to select both of those fields on top of what I have. I have the following:
DECLARE @Providers TABLE (ID INT IDENTITY(1,1),
Provider_Name VARCHAR(20),
Uniq_Id VARCHAR(10),
Total_Spent MONEY,
Total_Earned MONEY)
INSERT INTO @Providers (Provider_Name, Uniq_Id,Total_Spent,
Total_Earned)
[Code] .....
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Apr 10, 2008
I have been working on this 'Select Count' problem for the past week. Somehow, the Counts were multipled.2 requests showed 4 counts, 3 requests showed 9 counts, 4 requests showed 16 counts. The main question,to the best of my knowledge, is the coding for DBadapter.Fill method. After 'Left Join' 2 tables, how do I code the DataTable names? I have tried using TransDS.Tables("Table name") to solve the problem. Butthe counts still showed mulpile #.
Another question: why there are 1 '0' line and 2 'rollup' lines?
Examiner
Requested
Scheduled
Finished
noShow
Cancelled
Deleted
0
0
0
0
0
0
312
249
97
60
39
45
255
210
90
60
15
30
aaaa
4
4
0
0
0
0
bbbb
9
9
3
0
6
0
16
16
0
0
16
0
16
4
2
0
2
12
4
4
2
0
0
0
strApptsSQL = "SELECT c.LName + ', ' + c.FName AS Examiner, " & _
"COUNT(Case TransCode WHEN 'R' THEN 1 ELSE NULL END) AS Requested, " & _"COUNT(Case TransCode WHEN 'B' THEN 1 ELSE NULL END) AS Scheduled, " & _
"COUNT(Case TransCode WHEN 'F' THEN 1 ELSE NULL END) AS Finished, " & _"COUNT(Case TransCode WHEN 'W' THEN 1 ELSE NULL END) AS DSnoShow, " & _
"COUNT(Case TransCode WHEN 'D' THEN 1 ELSE NULL END) AS Deleted, " & _"COUNT(Case TransCode WHEN 'E' THEN 1 ELSE NULL END) AS Cancelled " & _
"FROM Sssss.dbo.TransHistory AS T " & _"LEFT JOIN Sssss.dbo.Requests AS r ON T.TransUserID = r.RequestStaffIDFK " & " " & _
"LEFT JOIN Employee.dbo.Contacts AS c ON r.RequestStaffIDFK = c.ContactPK " & " " & _"GROUP BY c.LName + ', ' + c.FName WITH ROLLUP " & _
"ORDER BY c.LName + ', ' + c.FName"
'declare and create the data adaptersDim oDAAppts As New OleDbDataAdapter(strApptsSQL, oConnect)
Try
' fill the Dataset using the data adaptersoDAAppts.Fill(TransDS, "Requests")
Catch oErr As Exception
' display error message in page
lblErr.Text &= oErr.Message & "<br />"
Finally
' be sure to close connection if error occurs
If oConnect.State <> ConnectionState.Closed Then
oConnect.Close()
End If
End Try
' bind DataGrid to tablegvExaminerAppts.DataSource = TransDS.Tables("Requests")
gvExaminerAppts.DataBind()
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May 1, 2014
select top 15 count(*) as cnt, state from table
group by state
order by cnt desc
[code[...
Can the above three queries be combined into one and still be fast, if so how?What i am trying to go is an item count, by group, similar to ones Inbox in Outlook.
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Feb 6, 2008
HiI am new to SQL and am having a problem. I need to fix my query to do the following...2) get a total of the number of rows returned.
DECLARE @StartDate varchar(12)DECLARE @EndDate varchar(12)DECLARE @Region varchar(20)
SET @StartDate = '01/01/2002'SET @EndDate = '12/31/2008'SET @Region = 'Central'
SELECTA.createdon,A.casetypecodename,A.subjectidname,A.title,A.accountid,A.customerid,A.customeridname,B.new_Region,B.new_RegionName
FROM dbo.FilteredIncident AINNER JOIN dbo.FilteredAccount B ON A.customerid = B.accountid
WHERE (A.createdon >=@StartDate AND A.createdon <= @EndDate)AND (B.new_RegionName = @Region)AND (A.casetypecode = 2)
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Jan 29, 2007
I'm new to MSSQL 2005 and want to get a summary of a log table. I want to count all the rows for each date based on a DATETIME field called 'post_date' that holds the date and time of each record's creation.
this is the best I can come up with:
Code:
SELECT
DISTINCT(LEFT(post_date,11)) AS post_date, COUNT(DISTINCT(LEFT(post_date,11))) AS total_posts
FROM log_directory_contacts
GROUP BY post_date
The results show each date but the count column ('total_posts') returns '1' for every row even when I know their are more than 1 record on that date.
What am I doing wrong? Thanks!
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Apr 1, 2007
hi, like, if i need to do delete some items with the id = 10000 then also need to update on the remaining items on the with the same idthen i will need to go through all the records to fetch the items with the same id right? so, is there something that i can use to hold those records so that i can do the delete and update just on those records and don't need to query twice? or is there a way to do that in one go ?thanks in advance!
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Aug 23, 2006
My query returns a table of results, I would like to add a count columnthat contains the number of each result type returned.i.e.Type Count1 31 31 32 22 23 43 43 43 44 24 2Because there are 3 of type 1, 2 of type 2, 4 of type 3 etc...Is there straightforward way of doing this in SQL?Thanks
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Jul 20, 2005
Just a quick question, how do I divide the results of these two queriestogether ?(select count (*) as ontime from schedule where actualarrivaldate <=estimatearrivaldate)(select count (*) as total from schedule)Thanks for any helpRobert
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Apr 13, 2007
I have the following problem, I need to create the TotalsY and TotalsN values.
Can anybody give some direction on how to count these character values.
Column1 Y
Column 2 Y
Column 3 N
TotalsY 2
Totals N 1
Column1 =First(Fields!NOB_Pickup_L_D_T.Value)
Column 2 =First(Fields!NOB_Return_L_D_T.Value)
Column 3 =First(Fields!NOB_New_L_D_T.Value)
TotalsY 2 <I Dont Know>
Totals N 1 <I Don't Know>
Thanks,
Rick
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Dec 4, 2007
I have a store procedure "Get_Student_By_District" ParameterDistrictID if null return all
Return: Value(DistrictID, DistricName, SchoolID, SchoolName, TeacherID, TeacherName, StudentID, StudentName)
I will need to write another store procedure to calculate the additional 7 fields and include all the information it already has to have one dataset for my table in a Report.
1. Number of Students for a given Teacher
2. Number of Students for a given School
3. Number of Students for a given District
4. Number of Teachers for a given School
5. Number of Teachers for a given District
6. Number of Schools for a given District
7. Number of Districts
What and how is the best way to do this?
Thanks
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Dec 21, 2007
I want to know how to merge the following data. I am using 4 queries below. I was hoping to do it with 1 query. Table1Dist Fund VAE AOVAW AOMD CourtMD JudgeCAC AOCAC CourtVAE JudgeVAE JudgeI want to join the following 3 queries:DcountAll DcountAOSelect Dist, Count(Dist)as Count from Table1 GROUP BY Table1.Dist Select Dist, Count(Dist) as Count from Table1 Where Dist='AO' GROUP BY Table1.DistDcountCourtSelect Dist, Count(Dist) as Count from Table1 Where Dist='Court' GROUP BY Table1.DistSELECT DCountAll.Dist, DCountAll.Count, DcountAO.Count AS AO, DcountCourt.CountFROM DcountCourt RIGHT JOIN (DcountAO RIGHT JOIN DCountAll ON DcountAO.Dist = DCountAll.Dist) ON DcountCourt.Dist = DCountAll.Dist;
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May 30, 2008
hi everyone, I have a table: Help
A B C05/01/2008 100 1 05/01/2008 100 205/01/2008 100 205/01/2008 200 1 05/01/2008 200 2
SELECT A, COUNT(DISTINCT C) FROM help GROUP BY A
Result:1> 05/01/2008 2I need:1> 05/01/2008 4Thanks !!!
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Nov 3, 1998
TO all SQL Gurus,
The following statement returns let say 4 records -
SELECT title, price FROM table GROUP BY title
what is the correct syntax for the statement to return the count of 4 ?
if I put ->
SELECT count (*) FROM table GROUP BY title
it'll return 1.
Thanks,
Frank
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May 23, 2008
Hi everybody I have this sql code
SELECT i.infid, i.infname, i.infcalled, p.pubinfid, p.pubpub, p.publang, p.pubcount, p.pubid, n.cdpldesc
FROM info AS i INNER JOIN
pubssubscribe AS p ON i.infid = p.pubinfid INNER JOIN
newpubs AS n ON p.pubid = n.pubid
WHERE (i.infcond IS NULL)AND (p.pubid BETWEEN 30 AND 33) AND (p.pubcount > 1) AND (NOT (p.publang = '.'))
there are many records where infid appears more than once because people could subscribe in different in different publicatons.
ex.
infid pubid
1 30
1 32
1 33
2 30
etc... I want to count the infid appearing once and group it with infid
thanks
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Mar 25, 2004
SELECT emp_id,COUNT(*)
FROM emp
GROUP BY empId
THe above query returns the values
empid COUNT
1 4
2 4
3 5
BUT i want sum of the count (13) in the same query. How to achieve this.
Thanks.
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May 29, 2008
hi everyone,
I have a table: Help
A B C
05/01/2008 100 1
05/01/2008 100 2
05/01/2008 100 2
05/02/2008 200 1
05/02/2008 200 2
SELECT a, COUNT(c) FROM Help GROUP BY a
Result:
1> 05/01/2008 3
2> 05/02/2008 2
But I need grouping columns B and C so that the result was
1> 05/01/2008 2
2> 05/02/2008 2
Is it possible? How can I do?
Thanks.
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Jul 29, 2013
I want to join two tables and count the rows on the second table as something is grouped by the first. To be more clear. I have vendors and open tracking numbers for orders they have shipped. I want to list the vendor information and to group by the vendor. However I also want to count how many open orders that vendor has - which is on a different table. I have this so far:
SELECT `companyName`
, `emailAddress`
, `ccAddress`
, `dailyMessages`
, (SELECT count(*) FROM `tracking` WHERE `pkgStatus`!='4') AS 'openTracking'
FROM `vendor`
LEFT OUTER JOIN `tracking`
ON `vendor`.`id` = `tracking`.`vendorID`
WHERE (SELECT count(*) FROM `tracking` WHERE `pkgStatus`!='4') > 0
GROUP BY `vendor`.`id`
The problem is that this code results in this table. Where openTracking is always equal to the total count, not distinct to that vendor's ID
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Apr 5, 2006
Hello
I'm putting together a football database and want to show how many games a player played in a season.
SELECT COUNT (PlayerFixture.FixtureID) FROM PlayerFixture WHERE PlayerFixture.PlayerID = '::PlayerID::' GROUP BY Season
However if a player doesn't play any games in a particular season the COUNT function ignores it and just returns values in seasons he has played. Is there any way i can get the COUNT function to return a "0" or "-" if a player didn't play any games that season?
Cheers
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Mar 13, 2007
hi,
this sounds simple, but ive to idea how ..
1. how to count all records we found when there's group by?
SELECT ItemID, CustomLotNo, Ownership
FROM tblItemDetail
GROUP BY ItemID, CustomLotNo, Ownership
ORDER BY ItemID
2. how to print rows number for each record? like the Expr1 column
Expr1 ItemID CustomLotNo Ownership
1 A A01 INT1
2 C GPB01 JAB2MY
~~~Focus on problem, not solution~~~
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Apr 24, 2008
I am doing employee shift report. I am showing totals for the shift, day and store. Store is the main group, day is the sub group under store group and shift is the sub group under the day group. I want to calculate number of shift group records (Number of shifts) and use it in the store level group calculation.
How to do it?
Thanks,
Muniappan Kandasamy
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May 23, 2007
Can this be used to prevent the repetition of records displayed in a page?
Code Snippet
SELECT T_ProgramGuests, GuestName
FROM T_ProgramGuests
GROUP BY ProgramID, GuestName
HAVING (COUNT(*) > 1)
I'm trying to prevent names being repeated. I only want the name to show once followed by the next name and so on. But only once.
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Jan 4, 2008
I would like to select data from a database using 'Select * " based on a value in a row (same column)being unique.
By that I mean that that data must not repeat again. Idealy I would like to set the number my self so rather then unique I could say
select the rows from the database only if the uniquevalue does not repeat more then x number of times.
eg
Value A
Value B
Value C
Value B
Value B
Value C
So if I wanted to set the uniquness to 1 then only row with Value A would be collected.
If I set the uniquenss to =<2 then I would get data from rows with value A and C so
3 rows returned.
I have this so far
SELECT *
FROM SingleS.mdb
GROUP BY Uniquevalue
HAVING count(*) = 1
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May 30, 2008
Hi everyone,
I have a table: Help
A B C
05/01/2008 100 1
05/01/2008 100 2
05/01/2008 100 2
05/01/2008 200 1
05/01/2008 200 2
SELECT A, COUNT(DISTINCT C) FROM help GROUP BY A
Result:
1> 05/01/2008 2
I need:
1> 05/01/2008 4
Thanks !!!
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Oct 25, 2007
Probably has been solved a million times, but here it is anyway:
Say I have a table with follwoing rows:
Site Appointment Maintenance Date
NY 13 10-25-2007
CA 14 10-29-2007
NY 18 10-25-2007
NJ NULL 10-26-2007
I need to perform a simple count showing the total (Maintenance Dates) for the next 2 days. Additionally, if a site is listed, but it doesn't have any (Maintenance Dates) for the next 2 days, it must be part of the report with the total as zero.
I can do
SELECT Site, COUNT(*)
FROM dbo.MyTable
GROUP BY Site
-- for brevity, assume GETDATE() is set to 12:00 AM, today
WHERE [Maintenance Date] >= GETDATE() AND [Maintenance Date] < DATEADD(dd, 2, GETDATE())
but this only lists NJ and NY, because they both have counts over the next days. How do I get CA in the list?
Thanks.
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Nov 28, 2007
I'm reading a lot of data from a database using SqlDataReader. Now I'd like to report the progress to the user, but for this I need to know in advance how many items SqlDataReader will return.
Is there any way to get this 'number of expected results' from the SqlDataReader?
tia,
Sam
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Oct 23, 2007
Hi,
I use group by myItem, that displays rows for each value of myItem.
I want at the end of each group for each specific myItem, I want an extra row to tell me the count of the rows for that group.
How do i do that please. Here s what I need, for example for this set of rows:
myItem colum2 colum3
711056 22662 Finances / -2291 -2479916
711056 22663 Finances / -2380 -2576255
711056 43428 Cda) -323 -349635
711056 43428 . -B-(Cda) -44 -47628
711057 44348 . -B-(Cda) -355 -384273
711057 47033 . -B-(Cda) -1278 -1383384
I need 2 extra rows, one at the end of the items 711056 telling me there are 4 rows for the item 711056 and one row at the very end telling me there are: 2 rows for the item: 711057
Thanks a lot.
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Jan 11, 2008
Hi all,
I copied and executed the following sql code in my SQL Server Management Studio Express (SSMSE):
--SELECTeg8.sql from SELECT-Using correlated subqueries of MSDN2 SELECT Examples--
USE AdventureWorks ;
GO
SELECT DISTINCT Name
FROM Production.Product p
WHERE EXISTS
(SELECT *
FROM Production.ProductModel pm
WHERE p.ProductModelID = pm.ProductModelID
AND pm.Name = 'Long-sleeve logo jersey') ;
GO
-- OR
USE AdventureWorks ;
GO
SELECT DISTINCT Name
FROM Production.Product
WHERE ProductModelID IN
(SELECT ProductModelID
FROM Production.ProductModel
WHERE Name = 'Long-sleeve logo jersey') ;
GO
=========================================
I got:
Results Messages
Name o row affected
========================================
I think I did not get a complete output from this job. Please help and advise whether I should search somewhere in the SSMSE for the complete results or I should correct some code statements in my SELECTeg8.sql for obtaining the complete results.
Thanks in advance,
Scott Chang
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Jun 13, 2007
Hi,
I'm trying to calculate some leagues for a website i run usuing some quite complicated querys. As the leagues are calculated with such somplicated criteria, i've had to build the leagues inot a temporary table.
What i need to be able to do is update the temp table with the results of a group by query. This gives me an error and the only way i have found to achieve this is to insert the results of a group by into another temp table, and then use that to perfom the update.
Is there something i'm missing, or is this the only way to achieve my goal ?
Thanks in advance.
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Nov 19, 2006
Hi all,
I have a problem with my query which is suppose to select count posts group by the date, the query works but doesnt return the count as i want, i think the problem that the datetime column contains also Time in hours which ofcourse isnt same in all rows in same day, so i dont know what to do, Here's my Query:
SELECT PostID, Date, COUNT(Date) AS 'TotalPosts' FROM Posts GROUP BY PostID, Date
Thank you for help
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May 21, 2008
I have the following SQL Statement:
SELECT CONVERT(char(10), FixtureDate, 101) AS Date, COUNT(*) AS 'NumberOfRecords'FROM tblFixturesGROUP BY CONVERT(char(10), FixtureDate, 101)
I want to add a new column called "need results".
This column needs to be count if a certain cell is NULL.
Count If HomeScore IS NULL
as well as grouping by date and counting the number of records. So the third column needs to count the number of records where homescore IS NULL
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