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.

Syntax

DropSequence ::= DROP 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;