DROP SEQUENCE
remove a sequence
English manual coverage begins with PostgreSQL 6.4. Source history and runtime observations have their own recorded version boundaries.
Reading PG 18·Select a recorded version
- anchor
- SQL-DROPSEQUENCE
- file
- sql-dropsequence.html
- lang
- en
- name
- DROP SEQUENCE
- purpose
- remove a sequence
- purpose zh
- 移除一个序列
- sections same as
- Unknown
- slug
- 18
- synopsis html
- DROP SEQUENCE [ IF EXISTS ] <em class="replaceable"><code>name</code></em> [, ...] [ CASCADE | RESTRICT ]
- synopsis text
- DROP SEQUENCE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
Syntax
DROP SEQUENCE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]Syntax diagrams
Read left to right. Branches are choices, bypasses are optional, loops repeat. Select an underlined parameter to open its rule.
Definition PG 18
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 EXISTSDo not throw an error if the sequence does not exist. A notice is issued in this case.
nameThe name (optionally schema-qualified) of a sequence.
CASCADEAutomatically drop objects that depend on the sequence, and in turn all objects that depend on those objects (see Section 5.15).
RESTRICTRefuse 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 PostgreSQL extension.
See Also
CREATE SEQUENCE, ALTER SEQUENCECompare versions
Source references
Full definition and evidence JSON
Definition sources
center · PostgreSQL 18 · wiki-repair-20261023:018476352c6d19a547ef072db0f945b4bfde40a58e15f8edda411bb7bf036636
Text language: en · wiki-repair-20261023:018476352c6d19a547ef072db0f945b4bfde40a58e15f8edda411bb7bf036636