Drill data types correspondence table

[Daniel Barclay <db...@maprtech.com>]

For those who didn't see earlier drafts, here's a spreadsheet showing the correspondence between various kinds/levels of types in Drill (e.g., SQL data type names vs. Calcite Java enumerations vs. RPC-level Protobuf enumerations):

Drill Data Types Correspondence Table <https://docs.google.com/spreadsheets/d/1NwfYScdOjKqM4Ow5tVVtFa0nNpd70x1Ew-hzS3bgyJw/edit?pli=1#gid=0>

If you notice anything incorrect, or have answers to any of the loose ends (labeled with "TBD:" or "Q:" (for questions)), please comment on the document or e-mail me.

Thanks,
Daniel

-- 
Daniel Barclay
MapR Technologies