Yes! There's even a great project built around them to streamline their use, Steampipe[0]. That said, the last time I tried it, it was orders of magnitude slow

Yes! There's even a great project built around them to streamline their use, Steampipe[0]. That said, the last time I tried it, it was orders of magnitude slower than OctoSQL. Moreover, reusing the Postgres query engine has its advantages, but it also takes away flexibility you might want to customize the dialect - in the case of OctoSQL, that's i.e. support for streaming and live updating queries. [0]: https://steampipe.io https://steampipe.io