MySQL finding the most expensive in each zip code

Question

I have a table called Products with the schema (name, city, state, zip_code price).

And I want to find the most expensive products\' name for a given state\'s each zip_c

Answer 1

SELECT
      t.name, t.city, t.zip_code, t.price
FROM  
       ( SELECT zip_code
              , MAX(price) as price 
         FROM products 
         WHERE state = 'NJ' 
         GROUP BY zip_code
       ) AS tm 
    JOIN
        products as t
            ON  tm.zip_code = t.zip_code 
            AND tm.price = t.price
WHERE 
        t.state = 'NJ'