Web Reference: Apr 15, 2009 · Is there an easy way to run a single migration? I don't want to migrate to a certain version I just want to run a specific one. Rails uses this timestamp to determine which migration should be run and in what order, so if you're copying a migration from another application or generating a file yourself, be aware of its position in the order. To run a specific migration up or down, use db:migrate:up or db:migrate:down. Up a specific migration: Down a specific migration: The version number in the above commands is the numeric prefix in the migration’s filename.
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