This shows how to use PostgreSQL from an C# Entity Framework Core project.
Install docker and docker compose.
Run the whole shebang:
./run.shPoke the database:
docker compose exec --user postgres postgres psql startrek-- list roles.
\dg
-- list databases.
\l
-- list relations.
\d
-- list relations access privileges.
\dp
-- list default access privileges.
\ddpYou should see something alike:
startrek=# -- list roles.
startrek=# \dg
List of roles
Role name | Attributes | Member of
-----------------+------------------------------------------------------------+-------------------
example | | {startrek_reader}
postgres | Superuser, Create role, Create DB, Replication, Bypass RLS | {}
startrek_owner | | {}
startrek_reader | Cannot login | {}
startrek=# -- list databases.
startrek=# \l
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+----------+------------+------------+-----------------------------
postgres | postgres | UTF8 | en_US.utf8 | en_US.utf8 |
startrek | postgres | UTF8 | en_US.utf8 | en_US.utf8 | postgres=CTc/postgres +
| | | | | startrek_owner=CTc/postgres+
| | | | | startrek_reader=c/postgres
template0 | postgres | UTF8 | en_US.utf8 | en_US.utf8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.utf8 | en_US.utf8 | =c/postgres +
| | | | | postgres=CTc/postgres
(4 rows)
startrek=# -- list relations.
startrek=# \d
List of relations
Schema | Name | Type | Owner
--------+-----------------------+----------+----------------
public | CharacterPhoto | table | startrek_owner
public | CharacterPhoto_Id_seq | sequence | startrek_owner
public | Characters | table | startrek_owner
public | Characters_Id_seq | sequence | startrek_owner
public | Series | table | startrek_owner
public | Series_Id_seq | sequence | startrek_owner
public | __EFMigrationsHistory | table | startrek_owner
(7 rows)
startrek=# -- list access privileges.
startrek=# \dp
Access privileges
Schema | Name | Type | Access privileges | Column privileges | Policies
--------+-----------------------+----------+---------------------------------------+-------------------+----------
public | CharacterPhoto | table | startrek_owner=arwdDxt/startrek_owner+| |
| | | startrek_reader=r/startrek_owner | |
public | CharacterPhoto_Id_seq | sequence | startrek_owner=rwU/startrek_owner +| |
| | | startrek_reader=r/startrek_owner | |
public | Characters | table | startrek_owner=arwdDxt/startrek_owner+| |
| | | startrek_reader=r/startrek_owner | |
public | Characters_Id_seq | sequence | startrek_owner=rwU/startrek_owner +| |
| | | startrek_reader=r/startrek_owner | |
public | Series | table | startrek_owner=arwdDxt/startrek_owner+| |
| | | startrek_reader=r/startrek_owner | |
public | Series_Id_seq | sequence | startrek_owner=rwU/startrek_owner +| |
| | | startrek_reader=r/startrek_owner | |
public | __EFMigrationsHistory | table | startrek_owner=arwdDxt/startrek_owner+| |
| | | startrek_reader=r/startrek_owner | |
(7 rows)
startrek=# -- list default access privileges.
startrek=# \ddp
Default access privileges
Owner | Schema | Type | Access privileges
----------------+--------+----------+----------------------------------
startrek_owner | public | function | startrek_reader=X/startrek_owner
startrek_owner | public | sequence | startrek_reader=r/startrek_owner
startrek_owner | public | table | startrek_reader=r/startrek_owner
(3 rows)
Destroy everything:
docker compose down --volumes --remove-orphans --timeout=0