Question

I am trying to write a SQL statement to return the latest record for each subject for a person,

Database
Counter,Name,Subject,Grade
1,PersonA,Maths,C
2,PersonB,Maths,B
3,PersonA,English,B
4,PersonB,English,A
5,PersonA,Maths,A
6,PersonB,Maths,B

I would like to return that latest result for PersonA

5,PersonA,Maths,A
3,PersonA,English,B

How would this be achieved?

Answer 1

Select t1.Name,t1.Subject,t1.Grade
From SomeTableName t1
inner join (Select Name,Subject,Max(Counter) As Counter 
            From SomeTable 
            Group By Name,Subject) t2
On t1.counter = t2.counter