I come from the world of "Crystal Reports", where you can pretty much do what you want, if you understand the schema, etc. of the database you are working with.

In Espo, reports are part of the "Advanced Pack" extension, but is that the most flexible option for getting information out of Espo?

There are various MySQL reporting/statistical tools out there ... some paid, some open-source ... but I'm curious if anyone has worked with any of these products against Espo tables, with any success?