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Module zone_map

Module zone_map 

Source
Expand description

Zone maps for data skipping during scans.

Zone maps store min/max/null_count metadata for each chunk of property data, allowing the query engine to skip chunks that can’t possibly match a predicate.

For example, if a chunk has min=50 and max=100, and the predicate is age < 30, the entire chunk can be skipped without reading any actual data.

Structs§

BloomFilter
Simple Bloom filter for equality predicate optimization.
BloomFilterBuilder
Builder for Bloom filters.
ZoneMapBuilder
Builder for constructing zone map entries from data.
ZoneMapEntry
Zone map for a single chunk of data.
ZoneMapIndex
Zone map index for a property column.