Removes a name from the list of authorized database users.
DROP USER [ IF EXISTS ] user‑name[,…] [ CASCADE ]
Specifies not to report an error if the users to drop do not exist. Use this clause in SQL scripts to avoid errors on dropping non-existent objects before attempting to create them.
The name of a user to drop.
Drops all user-defined objects created by the user dropped, including schema, table and all views that reference the table, and the table's associated projections.
DROP USER fails if objects exist that were created by the user, such as schemas, and tables and their associated projections:
=> DROP USER user1; NOTICE: Table T_tbd1 depends on User user1 ROLLBACK: DROP failed due to dependencies DETAIL: Cannot drop User user1 because other objects depend on it HINT: Use DROP ... CASCADE to drop the dependent objects too
DROP USER CASCADE succeeds regardless of any pre-existing user-defined objects. The statement forcibly drops all user-defined objects, such as schemas, tables and their associated projections:
=> DROP USER user1 CASCADE;
Tables owned by the user being dropped cannot be recovered after you issue
DROP USER CASCADE.
DROP USER succeeds if no user-defined objects exist (no schemas, tables or projections defined by the user):
=> CREATE USER user2; CREATE USER => DROP USER user2; DROP USER