Query to find the top ranked student in each class ?? table given

i/p table:
studentid classid marks
1 1 400
2 1 500
3 2 600
4 2 700
5 3 800
6 3 900
o/p table :
studentid classid marks
2 1 500
4 2 700
6 3 900

You dump your homework in a forum of volunteers without even trying to resolve it, and now you start flaming in your very first thread?
Please find assistance elsewhere, where they are more tolerant to the lazy-ones.
Sybrand Bakker
Senior Oracle DBA

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Hi All,
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Dou you know read?
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I need the query to find the [class Name] which has the most number of students. please look below at the tables
Students Table
StudentId     StudentName ClassID
1                  xxx                   1
2                  yyy                   1
3                  zzz                   1
4                  fff                    2
5                   ttt                  2
Classes Table
ClassID          ClassNane
1                    CSHARP
2                    JSHARP
The result should be : CSHARP
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Appreciate your help
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Try:
DECLARE @Classes TABLE (
ClassID INT identity(1, 1) PRIMARY KEY
,ClassName VARCHAR(50)
INSERT INTO @Classes (ClassName)
VALUES ('CSharp')
,('JSharp')
DECLARE @Students TABLE (
StudentID INT identity(1, 1) PRIMARY KEY
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,ClassID INT
INSERT INTO @Students (
StudentName
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VALUES (
'xxx'
,1
'yyy'
,1
'zzz'
,1
'fff'
,2
'ttt'
,2
SELECT TOP (1)
WITH TIES C.ClassName
FROM @Classes C
INNER JOIN @Students S ON C.ClassID = S.ClassID
GROUP BY C.ClassID
,C.ClassName
ORDER BY COUNT(S.StudentID) DESC
For every expert, there is an equal and opposite expert. - Becker's Law
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2 3
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4
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3
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Hi,
ngac_auk wrote:
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Whenever you have a question, post a little sample data, and the results you want from that data.
In the case of a DML question (like this one: how to prevent DML that causes a loop) post some INSERT statements that show the table without any problems.
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hi Meghadoot,
below is an example for your request.
ST03N
Expert mode
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http://john-goodwin.blogspot.com/

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Dear gurus
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one way here:
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Al
Edited by: Alberto Faenza on Dec 18, 2012 5:23 PM
Changed again!! Previous logic was wrong

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Query to find the top ranked student in each class ?? table given

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