tag-exists

The tag-exists command checks whether the tag you specify already exists in your database.

Uses

The tag-exists command is typically used to identify whether the specified tag exists in the database or specifically in the DATABASECHANGELOG table. Running the tag-exists command checks for the tag and, based on whether it exists or not, provides the appropriate output.

Syntax

To run the tag-exists 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 properties in your command line.

Then run the tag-exists command:

liquibase tag-exists --tag=myTag

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

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
--url

The JDBC database connection URL. See Using JDBC URL in Liquibase.

Required
--tag

The tag identifying which tagged changesets in the changelog to evaluate. Specify as --tag=myTag. Positional format <command> <tag> deprecated in 4.4+.

Required
--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. If defaultSchemaName is set, then objects do not have to be fully qualified. This means you can refer to just mytable instead of myschema.mytable.

Tip: In Liquibase v4.23.0+, camelCase for defaultSchemaName works successfully. If you are on an earlier version, camelCase may not work as expected.

Note: The syntax liquibase.command.defaultSchemaName is valid for v4.19.0+. For prior versions, use defaultSchemaName.

Optional
--driver

The JDBC driver class

Optional
--driver-properties-file

The JDBC driver properties file

Optional
--password

Password to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

Optional
--username

Username to connect to the target database.

Tip: It is a best practice to store sensitive data in a Secrets Management tool with Liquibase Pro.

Optional

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.