Which city and state produces the most and least bitter beer, and what is the difference in bitterness between the two? List also the names of the beer.
The more IBU, the more bitter the beer is, most bitter means highest IBU; The less IBU, the less bitter the beer is, least bitter means lowest IBU
SELECT T1.state, T1.city, T2.name, T2.ibu FROM breweries AS T1 INNER JOIN beers AS T2 ON T1.id = T2.brewery_id GROUP BY T1.state, T1.city, T2.name, T2.ibu HAVING MAX(ibu) AND MIN(ibu) LIMIT 2