Reassigning objects and dropping users

After assigning permissions and restricting access on various levels, it can happen that users are dropped from the system. Unsurprisingly, the commands to do this are the DROP ROLE and DROP USER commands. Here is the syntax of DROP ROLE:

test=# \h DROP ROLE
Command: DROP ROLE
Description: remove a database role
Syntax:
 DROP ROLE [ IF EXISTS ] name [, ...]
 URL: https://www.postgresql.org/docs/14/sql-droprole.html

Once the syntax of DROP ROLE has been discussed, we can give it a try. The following listing shows how this works:

test=# DROP ROLE joe;
ERROR:  role  "joe"  cannot be dropped because some  objects depend on it
DETAIL:  target of policy joe_pol_3 on table t_person
target of policy joe_pol_2 on table t_person
target of policy joe_pol_1 on table t_person
privileges for table t_person
owner of table t_user
owner of sequence t_user_id_seq
owner of default privileges on...