Hi all, Just wanted to check back in and mention that, after a few days of battling with a rogue UNION SQL call and fixing various other edge cases, the main pull request for AIP-40 is ready for review: https://github.com/apache/airflow/pull/15389
It's a big one, so even a partial review is appreciated; I've tried to keep a lot of the separate "polish items" out (you can see what I still intend to do separately in the PR description), but there's still a lot that's all interconnected and so in one big PR. Thanks, Andrew
