ClickHouse Skips Data: Granules, Marks, and Bit-Packed Indexes
A MergeTree scan isn’t a full scan. Parts are cut into granules, each granule gets a bit-packed mark, and the primary key index stores one key value per granule — so…
A MergeTree scan isn’t a full scan. Parts are cut into granules, each granule gets a bit-packed mark, and the primary key index stores one key value per granule — so…