Re: selective migration options (e.g. create and add only)

On Friday, June 9, 2017 at 9:00:00 AM UTC-4, ktang wrote: > > Hi, > > I have an application migrating existing mysql dbs which may have tables > only in some system. > I am trying to use alembic to handle the migration. > > When I migrate the db to a newer version, if I don't want to drop any >

selective migration options (e.g. create and add only)

Hi, I have an application migrating existing mysql dbs which may have tables only in some system. I am trying to use alembic to handle the migration. When I migrate the db to a newer version, if I don't want to drop any existing tables or columns, how can I do this (just adding stuff)? And a m