My friend Jacob Sebastian runs a very interesting T-SQL quiz this month and everyone is encouraged to take part in it and have a chance to win a prize.
I participated in the very first SQL quiz a few months ago. I can say that I learn a lot when I was trying to answer hard questions and doing a research. This time I am participating as a Quiz Master. My question is now open for all answerers.
I invite all my friends to participate in the quiz and increase their knowledge.
Good luck to all of you!