The ALTER INDEX statement applies a schema change to an index.
Note:
To understand how CockroachDB changes schema elements without requiring table locking or other user-visible downtime, see Online Schema Changes in CockroachDB.For information on using ALTER INDEX, see the documents for its relevant subcommands.
| Subcommand | Description | 
|---|---|
| RENAME | Change the name of an index. | 
| SPLIT AT | Force a key-value layer range split at the specified row in the index. |