Rails3の開発モードでexplainコマンドの実行を無効にする方法
User Load (615.1ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 12 LIMIT 1
EXPLAIN (604.5ms) EXPLAIN SELECT `users`.* FROM `users` WHERE `users`.`id` = 12 LIMIT 1
EXPLAIN for: SELECT `users`.* FROM `users` WHERE `users`.`id` = 12 LIMIT 1