More transform examples and functionality?

[kuzhao]

I see great potential of PoC/experimental data row transformation in this brief but universal SQL client written in golang.

May I know if we can add more data transformation CLI examples into README.md? I (and maybe many others) would much enjoy examples like the capability of generating new fields on the fly and on demand, i.e. adding a geoCoordinate field from the address field for each row.
It's okay if such functionality requires plugin/custom golang function pkg. People from the community with the interest will help.