Hi all! Recently In Murano project, we encountered a problem with drop column operation in Alembic migration using SQLite. And now we think, what is the best way to resolve this problem. Alembic developers implemented a special tool as workaround for such cases: https://bitbucket.org/zzzeek/alembic/issue/21/column-renames-not-supported-on-sqlite http://alembic.readthedocs.org/en/latest/batch.html Note, that they say, that this feature is in "Beta" mode currently. So there are two options: 1) Use Alembic beta feature - batch_alter_table. This implies rewriting of all migrations with drop column and other operations. 2) Just recommend users to not use SQLite in cases where unsupported ALTER TABLE operations needed. What do you think? -- With kind regards, Andrew Pashkin. cell phone - +7 (985) 898 57 59 Skype - waves_in_fluids e-mail - apashkin at mirantis.com