This file documents any backwards-incompatible changes in Superset and
assists people when migrating to a new version.
## Next
## 0.36.0
*[8867](https://github.com/apache/incubator-superset/pull/8867): a change which adds the `tmp_schema_name` column to the `query` table which requires locking the table. Given the `query` table is heavily used performance may be degraded during the migration. Scheduled downtime may be advised.