I see tests are missing, could you add some?

Done! The test is minimal, but the primary difference in GoogleSQL is a bunch of new keywords (functions), and the golden looks good for those. Thanks.

Nice, thanks for being so quick! LGTM 👍

Nice, thanks for being so quick! LGTM 👍

Thank you too. I don't know what your standards/process is for merging, but if you can merge, I have a couple followup PRs that clean up and improve sql.py, but they will definitely cause conflicts with this one so I'm waiting until after merge.