# SQL Migration File Format SQL Migration is an ordinary SQL file. File name must have the following format: YYYYmmddHHMMSS_database.sql 'YYYYmmddHHMMSS' should be the current date in UTC. 'database' must be one of 'characters', 'world' or 'logon'. For example: 20140320193109_world.sql First line in the file must be the following: INSERT INTO `migrations` VALUES ('YYYYmmddHHMMSS'); The date must be the same as in the file name.