Solving the "Impossible" in ClickHouse: Advent of Code 2025

At ClickHouse, we don't like the word "impossible." We believe that with the right tools, everything is a data problem. To prove it, we decided to complete the 2025 Advent of Code unconventionally: using pure ClickHouse SQL.

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Solving the "Impossible" in ClickHouse: Advent of Code 2025 · TechNews