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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.
Zach Naimon
Dec 31, 2025
What's new in ClickStack. December '25.
Product
What's new in ClickStack. December '25.
The ClickStack Team · Dec 30, 2025
A look back at 2025 demo development at ClickHouse
Engineering
A look back at 2025 demo development at ClickHouse
Lionel Palacin · Dec 30, 2025
Good technology blogs: a reading list for the holidays
Engineering
Good technology blogs: a reading list for the holidays
Alexey Milovidov · Dec 29, 2025
New functions you might have missed in 2025
Engineering
New functions you might have missed in 2025
Mark Needham · Dec 23, 2025
ClickHouse Cloud now available on Azure UAE North: Bringing real-time analytics to the heart of the Middle East
Product
ClickHouse Cloud now available on Azure UAE North: Bringing real-time analytics to the heart of the Middle East
Anne Loyens · Dec 22, 2025
What really matters for performance: lessons from a year of benchmarks
Engineering
What really matters for performance: lessons from a year of benchmarks
Tom Schreiber · Dec 22, 2025
Alexey's favorite features of 2025
Engineering
Alexey's favorite features of 2025
Alexey Milovidov · Dec 19, 2025
December 2025 newsletter
Community
December 2025 newsletter
Mark Needham · Dec 18, 2025
Taming PostgreSQL GUC “extra” Data
Engineering
Taming PostgreSQL GUC “extra” Data
David Wheeler · Dec 18, 2025
How to use Rust in ClickHouse: avoiding a full rewrite
Engineering
How to use Rust in ClickHouse: avoiding a full rewrite
Alexey Milovidov · Dec 17, 2025
Parallelizing ClickHouse aggregation merge for fixed hash map
Engineering
Parallelizing ClickHouse aggregation merge for fixed hash map
Jianfei Hu · Dec 16, 2025
EMQ and ClickHouse: Real-time, AI-assisted analytics at the industrial edge
User stories
EMQ and ClickHouse: Real-time, AI-assisted analytics at the industrial edge
The ClickHouse Team · Dec 15, 2025
ClickHouse achieves AWS Financial Services Competency
Company and culture
ClickHouse achieves AWS Financial Services Competency
ClickHouse Team · Dec 12, 2025
Introducing pg_clickhouse: A Postgres extension for querying ClickHouse
Product
Introducing pg_clickhouse: A Postgres extension for querying ClickHouse
David Wheeler · Dec 10, 2025
Unordered mode for S3 ClickPipes is now available
Product
Unordered mode for S3 ClickPipes is now available
Marta Paes · Dec 9, 2025
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