DROP SEQUENCE

Description

Deletes a sequence from the current database.

Precautions

• Only the owner of a sequence, the owner of the schema to which the sequence belongs, or a user granted the DROP permission on a sequence or a user granted the DROP ANY SEQUENCE permission can delete a sequence. A system administrator has this permission by default.
• If the LARGE identifier is used when a sequence is created, the LARGE identifier must be used when the sequence is dropped.

Syntax

DROP [ LARGE ] SEQUENCE [ IF EXISTS ] {[schema.]sequence_name} [ , ... ] [ CASCADE | RESTRICT ];

Parameters

• IF EXISTS

  Reports a notice instead of an error if the specified sequence does not exist.

• sequence_name

  Specifies the name of the sequence to be deleted.

• CASCADE

  Automatically deletes the objects that depend on the sequence.

• RESTRICT

  Refuses to delete the sequence if any objects depend on it. This is the default action.

Examples

-- Create an ascending sequence named serial, starting from 101.
gaussdb=# CREATE SEQUENCE serial START 101;

-- Delete a sequence.
gaussdb=# DROP SEQUENCE serial;

Helpful Links

ALTER SEQUENCE and DROP SEQUENCE