How generate ChangelogFile by comparing two existing changelog files

问题

I am using Liquibase tool to maintain versions of a database in MySQL server

Here, I generate changeLogFile for a database

After one week, I want to compare the existing changeLogFile with the same database.

Here, I need to get what are the changes made in the database for last week.

or

Is it possible to compare two changeLogFiles?

来源：https://stackoverflow.com/questions/16185367/how-generate-changelogfile-by-comparing-two-existing-changelog-files