Postgres and Open Source Experts

Postgres provides the “ALTER ROLE” statement to alter an existing role with a new role. Using this, users can change the name and attributes of any existing role.

In PostgreSQL, users can access and override the privileges/rights of the database objects through the “GRANT” statement.

In PostgreSQL, the “REVOKE” statement is quite helpful in revoking the granted privileges from single or multiple roles.

In Postgres, the DROP ROLE statement is used to drop an existing role with its attributes. In the case of dependent objects, the DROP OWNED statement is used.

In PostgreSQL, the “\du” and “\du+” statements are used to show the list of users along with their attributes and descriptions.

To drop a schema in Postgres, the DROP SCHEMA statement is used. A schema is a collection of several objects, so dropping a schema will drop all the objects present in it.

PostgreSQL offers an “ALTER SCHEMA” statement that is used to modify the schema’s definition, such as altering the schema’s owner, renaming a schema, etc.

In PostgreSQL, the “ALTER SCHEMA” statement is used with the collaboration of the “RENAME TO” statement to rename a particular schema.

In PostgreSQL, the “CREATE SCHEMA” statement is used to create a schema. A schema is a namespace that offers various objects, such as tables, views, indexes etc.

In PostgreSQL, the CREATE ROLE statement is used with different role attributes to create a role with specific privileges such as SUPERUSER, CONNECTION LIMIT, etc.