Document how to use a SQL data source with lumen ai

[MarcSkovMadsen]

A lot of "my data" are in MS SQL or Oracle databases. I can't find any documentation of how to use data from such a data source. Please add tutorial or how-to guide.

My guess is that I can use from lumen.sources.intake_sql import IntakeSQLSource?

[MarcSkovMadsen]

I tried to look at the lumen repository. There is no useful docstring, no tests and no documentation showing how to use IntakeSQLSource. I give up.

[ahuang11]

This was my thought too when I was using Lumen (base), before the AI was added. Maybe can use AI to add some docs...