DROP SEQUENCE
Name
DROP SEQUENCE -- remove a sequence
Synopsis
DROP SEQUENCE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
描述
DROP SEQUENCE removes sequence number
generators. A sequence can only be dropped by its owner or a superuser.
参数
- 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.
例子
To remove the sequence serial:
DROP SEQUENCE serial;
兼容性
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.