Get the latest date for each record

Question

I have a History table (like a log) that records changes to parts:

TransactionID    Part ID          Description        Last Updated
1                1                   


        

Answer 1

select 
    TransactionID, PartID, Description, LastUpdated
from 
    History H
where
    LastUpdated = 
    (
        select 
            max(LastUpdated) 
        from 
            History
        where
            PartID = H.PartID
    )