Postgres: granting access to a role/user for future tables created by a different role/user

Question

I\'m building a spring boot application. Flyway database migrations are executed at the application startup.

I decided to use two different roles: role__app

Answer 1

You should write

ALTER DEFAULT PRIVILEGES FOR USER role__migration ...

If you omit the FOR USER clause, the privileges are only granted on objects created by the user who ran ALTER DEFAULT PRIVILEGES.

With the above statement, the privileges are granted when role__migration creates an object. That does not extend to members of the role role__migration.