Source for drill's calcite?

[Oscar Morante]

I'm trying to add support for week and weekdays to `date_trunc` and `date_part`. It seems to be working fine right now except that I need to patch calcite's TimeUnit so that the parser doesn't complain when using `extract` directly.

Any ideas?


PS: Here's the patch so far -> 
https://gist.github.com/spacepluk/40df5a90ddee2efe1f4a

--
Oscar Morante
"Self-education is, I firmly believe, the only kind of education there is."
                                                         -- Isaac Asimov.

I first tried using the latest calcite but it's too different from the version Drill is using, and `1.4.0-incubation` it doesn't work either. I've tried to look for the source but I can't seem to find `1.4.0-drill-r10` anywhere.

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