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866,633 quizzes played * 1,165 active players * US$68,287 in prizes awarded
Question Answer
When I register, I can choose an expertise level. How is this used in the PL/SQL Challenge? When we originally designed the PL/SQL Challenge and daily quizzes, we thought that we might calculate rankings by expertise level and perhaps even offer different questions for players at different levels.

At this time, however, we do not use this expertise level in any way. There are at least two reasons for this: first, players set the level themselves, so we were not comfortable ranking or giving out prizes based on the level. Second, offering a different quiz per expertise level makes the website code more complex - and means that we would need to create that many more quizzes.