How to select row with max value when duplicate rows exist in SQL Server

Question

I have table like this

DocumentID        | MasterStepID | StepNumber | RoleID | UserID     | Status
JIEP/TT/07/000174 | Approval1    |          1 |   NULL |         


        

Answer 1

Try This

SELECT T1.* FROM WF_Approval T1 
JOIN
(SELECT DISTINCT [Status], DocumentID, MAX(StepNumber) as [StepNumber] from WF_Approval 
GROUP BY DocumentID, [Status])  T2 
ON T1.DocumentID = T2.DocumentID AND T1.[Status] = T2.[Status]
AND T1.StepNumber = T2.StepNumber
ORDER BY StepNumber ASC, Status ASC

OUTPUT:

JIEP/TT/07/000174   Approval1   1   NULL    0006100022  1
JIEP/TT/07/000174   Approval1   5   18      0006100022  3
JIEP/TT/07/000174   Approval1   6   16      0006104115  6