Then you can use this option:
--liquibase formatted sql
--changeset jim:v1
CREATE OR REPLACE my_view AS
SELECT name
FROM my_table;
--rollback empty
--changeset bob:v2
CREATE OR REPLACE my_view AS
SELECT name, date
FROM my_table;
--rollback CREATE OR REPLACE my_view AS
--rollback SELECT name
--rollback FROM my_table;