DROP SEQUENCE

Function

DROP SEQUENCE deletes a sequence from the current database.

Precautions

• Only the sequence owner or a user granted with the DROP permission can run the DROP SEQUENCE command. The 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

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

Parameter Description

• IF EXISTS

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

• 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.
MogDB=# CREATE SEQUENCE serial START 101;

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

Helpful Links

ALTER SEQUENCE and CREATE SEQUENCE