MIGRATION_IRREVERSIBLE

Cause

A migration to roll back has no -- DOWN section.

nextly migrate:down runs the -- DOWN section of each migration it rolls back. This file's is empty, so there is no way to undo it.

Fix

• Hand-write a -- DOWN section that undoes the file's -- UP statements, then run the command again.
• Or, on a development database, use nextly migrate:fresh.

See Production migrations.

Example

✗ 20261020_120000_add_posts.sql has no down SQL — it is irreversible.
  Why:  `nextly migrate:down` runs a migration's `-- DOWN` section, and this file's is empty.
  Next: Hand-write a -- DOWN section or use 'nextly migrate:fresh'.
  Docs: https://nextlyhq.com/docs/cli/errors/migration-irreversible  (MIGRATION_IRREVERSIBLE)