-- Making a database change:
--
-- 1. Update this schema document to match what the end result should be.
--
-- 2. Run `make -C src/sql update-dbix hydra-postgresql.sql` in the root
--    of the project directory, and git add / git commit the changed,
--    generated files.
--
-- 3. Create a migration in this same directory, named `upgrade-N.sql`
--