This is excellent. I had just very recently thought to build this same thing for php and typescript. Haven't started it yet, but great to see the same thing out there for other languages.
sqlc generates Go code, nothing else, but the web page of sqlc.dev does not mention this anywhere. Of course, this is a .dev site, and .dev is owned by Google, so it is only to be expected, I guess?
It is Go first and foremost, but there are work-in-progress generators for other languages, including Kotlin and (in my opinion, somewhat oddly,) Python.