rollback-count

The rollback-count command sequentially reverts a specified number of changesets on your database.

Uses

Use the rollback-count command when you want to roll back changes sequentially, starting with the most recent changes and working backward until the count you specify is reached.

The image below shows three changesets: a, b, and c. Running the command rollback-count --count=3 rolls back the last three changesets.

If you want to revert changeset a without having to roll back changeset b and changeset c as well, you can do it with the help of the rollback-one-changeset command.

Impact

Using rollback-count comes with the risk of removing all changes depending on the number you specify. Also, when you roll back any change, the row associated with that change is deleted from the DATABASECHANGELOG table.

Warning: rollback-count increments based on changesets in the changelog, not records in the DATABASECHANGELOG table. If you manually delete changesets from your changelog, rollback-count does not restore those changes. For best practices on maintaining large changelogs, see Trimming changelog files.

Look for unintended consequences before using this command.

The best practice is to run the rollback-count-sql command helper command because it allows you to inspect the rollback-count SQL and search for any potential mistakes before you execute the rollback-count command.

Syntax

Before running the rollback-count command, you can run the history command to see all your previously executed changes.

Note: rollback-count works from the bottom of the list toward the top.

To run the rollback-count command, specify the driver, classpath, and URL in the Liquibase properties file. For more information, see Create and Configure a liquibase.properties File. You can also specify these in your command line.

Then run the rollback-count command:

liquibase rollback-count --count=2 --changelog-file=example-changelog.xml

Note: The --count=myCount syntax was added in Liquibase 4.4. If you use an older version, specify your count as a positional argument: <command> myCount.

Command arguments

Tip: For best results, specify all commands and parameters in the --kebab-case format in the CLI. If your preference is camelCase, it also works in the CLI.

Attribute	Definition	Requirement
--changelog-file	The root changelog	Required
--count	Integer specifying how many changes Liquibase applies the command to. Specify as --count=myCount. Positional format <command> <count> deprecated in 4.4+.	Required
--url	The JDBC database connection URL. See Using JDBC URL in Liquibase.	Required
--change-exec-listener-class	Fully-qualified class which specifies a ChangeExecListener	Optional
--change-exec-listener-properties-file	Path to a properties file for the ChangeExecListenerClass	Optional
--contexts	Specifies the changeset contexts to match. Contexts are expressions you can add to changesets to control which changesets are executed in any particular migration run.	Optional
--default-catalog-name	Name of the default catalog to use for the database connection	Optional
--default-schema-name	Name of the default schema to use for the database connection	Optional
--driver	The JDBC driver class	Optional
--driver-properties-file	The JDBC driver properties file	Optional
--label-filter	Specifies the changeset labels to match. Labels are tags you can add to changesets to control which changeset will be executed in any migration run.	Optional
--password	Password to connect to the target database	Optional
--rollback-script	The path to the script to use to perform the rollback. Only needed if the rollback is not already defined in the changelog, and if it is not a rollback statement that is automatically generated by Liquibase.	Optional
--username	Username to connect to the target database	Optional

* Liquibase will check nested changelogs for definitions of the changesets to rollback

Note: The username and password attributes are not required for connections and systems which use alternate means of authentication. Also, you can specify database credentials as part of the url attribute.