I mistakenly ran the second to last db migration wrong, but the last migration is fine. Now I want to roll back my second to last migration without reverting the last migration. Please share your knowledge with me and others.
rake db:migrate:down VERSION=20140804301246
simple answer i found is
rake db:rollback STEP=X
where X is the number of migration you want to play with(rollback). LIKE
rake db:rollback STEP=3
You can use rake db:migrate:down VERSION=xxxxx
where xxx is your migration version number for more see this
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