DROP_SEQUENCE (7)

DROP SEQUENCE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]

DROP SEQUENCE removes sequence number generators. A sequence can only be dropped by its owner or a superuser.

IF EXISTS

Do not throw an error if the sequence does not exist. A notice is issued in this case.

name

The name (optionally schema-qualified) of a sequence.

CASCADE

Automatically drop objects that depend on the sequence.

RESTRICT

Refuse to drop the sequence if any objects depend on it. This is the default.

To remove the sequence serial:

DROP SEQUENCE serial;

DROP SEQUENCE conforms to the SQL standard, except that the standard only allows one sequence to be dropped per command, and apart from the IF EXISTS option, which is a PostgreSQL extension.

CREATE SEQUENCE (CREATE_SEQUENCE(7)), ALTER SEQUENCE (ALTER_SEQUENCE(7))