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Cockroach Labs will stop providing Assistance Support for v21.2 on May 16, 2023. Prior to that date, upgrade to a more recent version to continue receiving support. For more details, see the Release Support Policy.

The ALTER INDEX statement applies a schema change to an index. For information on using ALTER INDEX, see the pages for its relevant subcommands.


The ALTER INDEX statement performs a schema change. For more information about how online schema changes work in CockroachDB, see Online Schema Changes.


Subcommand Description
CONFIGURE ZONE Configure replication zones for an index.
PARTITION BY Partition, re-partition, or un-partition an index. (Enterprise-only).
RENAME Change the name of an index.
SPLIT AT Force a range split at the specified row in the index.
UNSPLIT AT Remove a range split enforcement at a specified row in the index.

Viewing schema changes

This schema change statement is registered as a job. You can view long-running jobs with SHOW JOBS.

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