当我执行了以下命令:ALTER TABLE `mytable` ADD UNIQUE ( `column1` , `column2` ); 我看到了这个错误信息:#1071 - Specified key was too long; max key length is 767 bytes 列1...
script/generate acts_as_taggable_on_migration rake db:migrate 原因Mysql::Error: Specified key was too long; max key length is 1000 bytes: CREATE IND...