Which NBA team that didn't play in playoffs had the most winning rate in the 2000 NBA regular season?
NBA refers to lgID = 'NBA'; didn't play in the playoffs refers to PostGP = 0; 2000 refers to year = 2000; the most winning rate refers to max(divide(won, add(won, lost)))
SELECT T2.tmID FROM players_teams AS T1 INNER JOIN teams AS T2 ON T1.tmID = T2.tmID AND T1.year = T2.year WHERE T1.PostGP = 0 AND T1.year = 2000 ORDER BY CAST(T2.won AS REAL) / (T2.won + T2.lost) DESC LIMIT 1