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ActiveRecord::DuplicateMigrationNameError:とは?

ActiveRecord::DuplicateMigrationNameError:

rake db:migrateした際に下記のようなエラーが出ることがある.

rake aborted!
ActiveRecord::DuplicateMigrationNameError:

これの意味するところは,同一内容のマイグレーションファイルが二つあるよということ.
マイグレーションファイル名が異なっていてもDB構造が全く一緒なら起こった.
新しい方のマイグレーションファイルを削除し,もう一度rake db:migrateすればOK.

ajikawa_
SIer所属.学習したことの備忘録.
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