DROP SEQUENCE SQL - Language Statements DROP SEQUENCE remove a sequence DROP SEQUENCE DROP SEQUENCE name [, ...] [ CASCADE | RESTRICT ] DROP SEQUENCE removes sequence number generators. 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; There is no DROP SEQUENCE statement in the SQL standard.