ALTERs to run:
ALTER TABLE campaign_events ALTER COLUMN event_answers_status DROP DEFAULT;
- Where to run those changes: These tables are all in the extension1 cluster. In particular, they can be found in the per-wiki databases of testwiki, test2wiki, and officewiki, as well as in the wikishared database. So it's a total of 4 places.
- When to run those changes: After r937199 reaches production: in wmf.18, next week.
- If the schema change is backwards compatible: Yes (all write queries write to this column explicitly)
- If the schema change has been tested already on some of the test/beta wikis: Tested locally and in beta
- if the data should be made available on the labs replicas and/or dumps: Maybe, but we don't replicate data from x1 anyway.