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 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.

The impacts of rollback-count

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 <value> command.

Running the rollback-count command

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 --changelog-file=mychangelog.sql rollback-count 1

Note: Enter the name of the changelog and value you want to use in place of mychangelog.sql and 1.

rollback-count global attributes

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
--url

The JDBC database connection URL

Required
--username**

The database username

Required
--password**

The database password

Required

* 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.

rollback-count command attributes

Attribute Definition Requirement
<value>

Integer specifying how many changes Liquibase applies the command to

Required