Removes an index.
DROP INDEX [IF EXISTS] <name> [, ...] [CASCADE | RESTRICT]
DROP INDEX drops an existing index from the database system. To execute this command you must be the owner of the index.
Do not throw an error if the index does not exist. A notice is issued in this case.
The name (optionally schema-qualified) of an existing index.
Automatically drop objects that depend on the index.
Refuse to drop the index if any objects depend on it. This is the default.
Remove the index
DROP INDEX title_idx;
DROP INDEX is a Greenplum Database language extension. There are no provisions for indexes in the SQL standard.
ALTER INDEX, CREATE INDEX, REINDEX
Parent topic: SQL Command Reference