MySQL select DISTINCT by highest value

Question

I have a table full of magazines, and need to extract the latest unique issue of each magazine.

Ive tried

    SELECT DISTINCT
    magazine
        F         


        

Answer 1

SELECT 
    p.*
FROM
        product p
    INNER JOIN
        ( SELECT 
              magazine, MAX(onSale) AS latest
          FROM
              product
          GROUP BY 
              magazine
        ) AS groupedp
      ON  groupedp.magazine = p.magazine
      AND groupedp.latest = p.onSale ;