Third International NoCOUG SQL & NoSQL Challenge!
For anyone into using their SQL skills creatively, and getting out of the boring SQL-coding daily routine … here is a puzzle that is both entertaining and challenging, and with a real prize for the winner!
Official abstract:
“In this challenge (see page 25), the Wicked Witch of the West needs help in creating a magic spell to ensure that the Third Annual Witching & Wizarding Ball is a grand success.…
