One person called the quiz a "fiasco", adding that " honestly cannot find a decent explanation in any of the documentation."
Another wondered how a person might go about answering the quiz, posing these options:
How deep are we expected to have dived into these very specialized features so that to be well prepared for what is still awaiting us during the PL/SQL Challenge ... so that to be able to still continue to play it without a feeling of total frustration ...that ... I dare bet ... will be experienced by not a few players (myself included) with today's quiz ...
Here are some of my thoughts:
1. Offering a quiz every day is quite a....challenge. If I only stick with "mainstream" functionality of PL/SQL, I can tell you right now that it will be very tough to continue to offer interesting new material. I also want to leverage the knowledge of developers from around the world, who know much more about various aspects of and applications of PL/SQL than I do.
2. While I appreciate that many players are very much in "competitive mode" at the PL/SQL Challenge, the most fundamental and important objective of the site is to deepen and broaden your knowledge of the PL/SQL language (including the many built-in packages that add to the base language).
3. You will undoubtedly encounter quizzes on topics with which you have no experience. And, yes, that means that almost certainly your score for that day will not be very high. But you should try not to be terribly frustrated by such quizzes and instead focus on the learning aspects.