DROP INDEX SQL - Language Statements DROP INDEX remove an index DROP 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. name The name (optionally schema-qualified) of an index to remove. 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. This command will remove the index title_idx: DROP INDEX title_idx; DROP INDEX is a PostgreSQL language extension. There are no provisions for indexes in the SQL standard.