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The first challenge of the Advent of Code 2022 is out, and this year I decided to try to solve the proposed challenges only using T-SQL. I also want to share the solutions here, as I think they will provide a great learning experience for those who are new to SQL, and get a sense of how powerful it is. Here's the solution to the first one (I'll try to keep up with the challenges every day, but I really can't promise anything as it really depends on how much free time I'll have after work and family needs...)