Return one SQL row per product with price and latest date

Question

I am not a SQL guy, I have used it in the past and rarely have an issue that cant be solved by google... however this time I need to ask the Community.

I have a database

Answer 1

Try this. by using row_number().

             select * from 
             (
             select 
             T.ProdNo, 
             T.TransactionDate as 'LastPurchaseDate', 
             T.Price,           
             row_number() over (partition by ProdNo order by TransactionDate desc) as rnk
             from Transactions T
             )a
             where rnk='1'