> A killer feature of siuba is that the same analysis code can be run on a local DataFrame, or a SQL source.

Everyone thinks this is a good idea until they discover that SQL is not actually very portable, and any attempt to make it so neutralizes whatever benefits your SQL DB has.

E.g. if you have a Postgres db, that has tons of excellent features that you actually want to use, sticking to a lowest-common-denominator flavor of SQL basically nukes all that.