DROP INDEX

Removes an index.

Synopsis

DROP INDEX [IF EXISTS] <name> [, ...] [CASCADE | RESTRICT]

Description

DROP INDEX drops an existing index from the database system. To execute this command you must be the owner of the index.

Parameters

IF EXISTS

Do not throw an error if the index does not exist. A notice is issued in this case.

name

The name (optionally schema-qualified) of an existing index.

CASCADE

Automatically drop objects that depend on the index.

RESTRICT

Refuse to drop the index if any objects depend on it. This is the default.

Examples

Remove the index title_idx:

DROP INDEX title_idx;

Compatibility

DROP INDEX is a Greenplum Database language extension. There are no provisions for indexes in the SQL standard.

See Also

ALTER INDEX, CREATE INDEX, REINDEX

Parent topic: SQL Command Reference