Metabase 0.36 introduced reorderable table columns in the Data Model. As part of this change, we now take into account the order of fields as they exist in the database. For JDBC-based drivers, you probably won’t need to change anything.
If you’re developing a custom Metabase driver and want to make sure it’s compatible with 0.36, then have look at the wiki page: https://github.com/metabase/metabase/wiki/What’s-new-in-0.36.0-for-Metabase-driver-authors