DROP SEQUENCE
DROP SEQUENCE — remove a sequence
Synopsis
DROP SEQUENCE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
Description
DROP SEQUENCE removes sequence number generators. A sequence can only be dropped by its owner or a superuser. 
Parameters
- 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 5.14). 
- RESTRICT
- Refuse to drop the sequence if any objects depend on it. This is the default. 
Examples
 To remove the sequence serial: 
DROP SEQUENCE serial;
Compatibility
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 Postgres Pro extension.