Deprecated since version 1.8.0: See Manage Collection Indexes for alternatives.

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                 MONGOC_COLLECTION_ENSURE_INDEX(3)

       Errors are propagated via the error parameter.

       • collection: A mongoc_collection_t.

       • keys: A bson_t.

       • opt: A mongoc_index_opt_t.

       • error: An optional location for a bson_error_t or NULL.

          bool
          mongoc_collection_ensure_index (mongoc_collection_t *collection,
                                          const bson_t *keys,
                                          const mongoc_index_opt_t *opt,
                                          bson_error_t *error);

          Deprecated since version 1.8.0: See ManageCollectionIndexes for alternatives.