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Document migration order (#160)

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Adrian Macneil 2020-09-24 10:14:31 -07:00 • committed by GitHub
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@ -205,6 +205,8 @@ Writing: ./db/schema.sql
> Note: `dbmate up` will create the database if it does not already exist (assuming the current user has permission to create databases). If you want to run migrations without creating the database, run `dbmate migrate`.
Pending migrations are always applied in numerical order. However, dbmate does not prevent migrations from being applied out of order if they are committed independently (for example: if a developer has been working on a branch for a long time, and commits a migration which has a lower version number than other already-applied migrations, dbmate will simply apply the pending migration). See [#159](https://github.com/amacneil/dbmate/issues/159) for a more detailed explanation.
### Rolling Back Migrations
By default, dbmate doesn't know how to roll back a migration. In development, it's often useful to be able to revert your database to a previous state. To accomplish this, implement the `migrate:down` section: