How to make a “distinct” join with MySQL

Question

I have two MySQL tables (product and price history) that I would like to join:

Product table:

Id = int
Name = varchar
Manufacturer = varchar         


        

Answer 1

Why not keep it simple and fast:

SELECT 
 Product.UPC, Product.Name, Price_h.Price, Price_h.Date
FROM 
 Product
LEFT JOIN 
 Price_h
 ON Product.Id = Price_h.Product_id;
ORDER BY
 Price_h.Date DESC
LIMIT 1