Another message from Coursera: "Coursera will not provide analytical support directly to partners. We encourage partners to engage with Coursera’s Research Community for data support and analytical resources. You can request access to the Research Community by emailing research@coursera.org. The University of Illinois Urbana-Champaign has also generously shared with the community their data documentation guide for Coursera’s legacy data exports, which is a very helpful resource." https://wiki.illinois.edu/wiki/display/coursera/Coursera+Session-Based+Courses+SQL+and+Eventing+Data+Tables+Documentation
These were all recommended by Coursera in reply to Miggy's email: https://wiki.illinois.edu/wiki/display/coursera/Coursera+Session-Based+Courses+SQL+and+Eventing+Data+Tables+Documentation
Another message from Coursera: "Coursera will not provide analytical support directly to partners. We encourage partners to engage with Coursera’s Research Community for data support and analytical resources. You can request access to the Research Community by emailing research@coursera.org. The University of Illinois Urbana-Champaign has also generously shared with the community their data documentation guide for Coursera’s legacy data exports, which is a very helpful resource." https://wiki.illinois.edu/wiki/display/coursera/Coursera+Session-Based+Courses+SQL+and+Eventing+Data+Tables+Documentation