Why has all positive answer feedback stopped since an upgrade?

Environment:

Reports, ans_stats table
Versions November 2015 and newer

Issue:

After an upgrade to version November 2015 or newer, all positive answer feedback stops.

Resolution:

The Knowledge Foundation functionality was added in the November 2015 version. One part of that addition was adding a number of new tables. In order to match the new tables, the ans_stats table is now treated slightly differently. Rather than no/yes answer feedback being stored in the columns solved_1 & solved_2 respectively, they are now stored in solved_1 & solved_5. Therefore any report that utilized the column solved_2 will need to be updated to now use solved_5.

For additional information, see Answer 5193: .