tag

The tag command marks the current database state so you can roll back changes in the future.

Uses

The tag command is typically used to mark the current database state, version, release, or any other information by adding the tag to the last row in the DATABASECHANGELOG table. After setting the tag, you can use the rollback command to roll back all changes up to that tag.

The image below shows the DATABASECHANGELOG table structure. Running the command tag version1 applies the tag version1 to the last row in the DATABASECHANGELOG table. If you run rollback version1 command, it will roll back only createTable C value.

Note: It is best practice to tag your changesets before running any other commands against your database.

Running the tag command

To run the tag command, specify the driver, classpath, and URL in the Liquibase properties file. For more information, see Specifying Properties in a Connection Profile. You can also specify these properties in your command line.

Then run the tag command:

liquibase tag version1

Note: Enter the name of the tag that you want to use in place of version1. You don't need to specify the changelog file because the command marks the last row inserted in the DATABASECHANGELOG table regardless of what changelog file is specified.

tag global attributes

Attribute	Definition	Requirement
--url	The JDBC database connection URL	Required
--username*	The database username	Required
--password*	The database password	Required

Note: The username and password attributes are not required for connections and systems which use alternate means of authentication.

tag command attributes

Attribute	Definition	Requirement
<tag>	Tags allow the user to identify which changesets in the changelog to evaluate.	Required