st_column_in_index | incremental_row_per_key |
+--------------+------------+----------------------+--------------+--------------+-------------------------+-------------------------+
| sakila       | inventory  | PRIMARY              |            1 | inventory_id |                       1 |                       1 |
| sakila       | inventory  | idx_fk_film_id       |            1 | film_id      |                       1 |                       5 |
| sakila       | inventory  | idx_store_id_film_id |        