ClickHouse Release 25.1
Blog post from ClickHouse
ClickHouse version 25.1 has introduced several new features, including a faster parallel hash join algorithm using two-level hash maps, MinMax indices at the table level, improved Merge tables, and auto-increment functionality. The parallel hash join algorithm now uses a single shared two-level hash table to improve efficiency, reducing overhead and improving performance by approximately 36-31% compared to previous versions. The MinMax index feature allows for more efficient querying of columns with sorted data, while the Merge table engine enables combination of multiple tables into a single table using a standardized column structure. Additionally, the auto-increment functionality provides a fast and safe way to generate serial IDs for tables.
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