Tim Hunt a047d2f8b4 MDL-79332 Question stats: make loading robust to bad data ...

We were experiencing problems caused by old stats analysis in our
database, computed when there was a bug, causing fatal errors
when they were displayed. Therefore, this code needs to be robust to that.

2023-09-12 16:58:25 +01:00

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questions

MDL-79332 Question stats: make loading robust to bad data

2023-09-12 16:58:25 +01:00

responses

MDL-75576 quiz/question statistics: don't expire by time

2023-05-15 10:01:27 +01:00