Postgresql 中文操作指南

DROP SEQUENCE

DROP SEQUENCE — 删除序列

DROP SEQUENCE — remove a sequence

Synopsis

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

Description

DROP SEQUENCE 删除序列号生成器。序列只能由其所有者或超级用户删除。

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

要删除序列 serial ：

To remove the sequence serial:

DROP SEQUENCE serial;

Compatibility

DROP SEQUENCE 符合 SQL 标准，但该标准仅允许每个命令删除一个序列，并且 IF EXISTS 选项除外，该选项是 PostgreSQL 扩展。

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.