There is a database owner, I need to add another user with the same privileges. With rights to update/delete/alter, etc. How can I do it?
you can create an user and add all privileges trough grant command or you can just create a role and grant all privileges your role have to the new created role
`GRANT A TO B;`
It will grant all right of role A to B.
If A is a superuser, you also need: ALTER USER B WITH SUPERUSER;