At the PL/SQL Challenge website this year, 4,670 Oracle technologists from 104 countries spent over 32,000 hours submitting 213,077 answers to quizzes. These numbers reflect a very impressive commitment by all these players to improving their skill set in PL/SQL, SQL and APEX.
I am grateful beyond words to our reviewers, listed below with the number of questions they reviewed in parentheses:
The impact of our reviewers can be seen most clearly in the reduction in errors in our quizzes. In the eight months of play in 2010, we issued corrections for 31 quizzes. In all of 2011, with the addition of SQL and APEX quizzes, we only needed to issue corrections for 20 quizzes. And since January 2011, there have never been more than 2 corrections in a month. That's still too many - and I take full responsibility for all errors! - but it is certainly a big improvement. I expect to see the number decrease further in 2012.
Next, my thanks to the following players who found the time to submit quizzes that were then played in 2011, listed below with the number of questions authored in parentheses:
Finally, we have been working on some exciting new features for quite awhile now, and it looks like 2012 is the year in which they will appear, so please be on the lookout for announcements of big changes at the PL/SQL Challenge site soon.
Warmest holiday wishes to everyone!