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.
- IF EXISTS
- 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 title_idx:
DROP INDEX title_idx;
DROP INDEX is a Greenplum Database language extension. There are no provisions for indexes in the SQL standard.