How to merge previous database with new version database sqlite - Android

I have an app on playstore which contains a database.

Now in the new release, database is changed, a new table is entered.

Currently i am using sqlite studio and put the database file in the assets which is later copied as an app database. See this example.

I have to delete the previous database to copy new, or if i copy new(overwrite), in both cases user data is lost.

Maybe i can attach a new table to current database, but what if i have to add a column in table in previous database???

How should i handle this???

Please guide me...