DROP INDEX index_name [, ...] [ CASCADE | RESTRICT ]
The name (optionally schema-qualified) of an index to remove.
Automatically drop objects that depend on the index.
Refuse to drop the index if there are any dependent objects. This is the default.
DROP INDEX drops an existing index from the database system. To execute this command you must be the owner of the index.
DROP INDEX is a PostgreSQL language extension.
Refer to CREATE INDEX for information on how to create indexes.
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