fizzbuzz.sql

           WITH rules(_n, msg) AS (
         VALUES (3, 'Fizz')
              , (5, 'Buzz'))

              , nums AS (SELECT generate_series(1, 100) AS n)

         SELECT COALESCE(STRING_AGG(msg, '' ORDER BY _n), n::TEXT)
           FROM nums
LEFT OUTER JOIN rules ON n % _n = 0
       GROUP BY n
       ORDER BY n;