Missing details in Rails migration section

[begriffs]

Communication goals (e.g. detailed howto vs orientation)

• In a test suite the truncation database cleaner works best, and the rollback one has some issues
• config.activerecord.schema_format needs adjustment, and Samay will provide more info about this

Good locations for content in docs structure

http://docs.citusdata.com/en/v7.5/develop/migration_mt_ror.html

How does this work? (devs)

Example sql

Corner cases, gotchas

Are there relevant blog posts or outside documentation about the concept/feature?

Link to relevant commits and regression tests if applicable