Enhanced Iceberg table metadata by writing additional statistics such as column sizes, lower bounds, and upper bounds in manifest entries to improve min-max pruning.
Why it matters
This feature improves query performance on Iceberg tables by enabling more effective min-max pruning. By storing detailed statistics like column sizes and value bounds in the metadata manifests, ClickHouse can skip irrelevant data files during query execution, reducing I/O and speeding up scans.How to use it
No explicit user action is required to enable this feature. When using Iceberg tables, ClickHouse will automatically write enhanced statistics (column sizes, lower and upper bounds) into the manifest metadata during table metadata updates, enabling improved min-max pruning transparently.