DROP_SEQUENCE - remove a sequence

DROPSEQUENCE 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.

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

       To remove the sequence serial:

           DROP SEQUENCE serial;

       DROP_SEQUENCE - remove a sequence

       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, and in turn all objects that depend on those
           objects (see Section 5.15).

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

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

PostgreSQL 17.5                                       2025                                      DROPSEQUENCE(7)

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