Struct ChunkZoneHints 

pub struct ChunkZoneHints {
    pub column_hints: FxHashMap<usize, ZoneMapEntry>,
}

Zone map hints for chunk-level predicate pruning.

When a scan operator loads a chunk, it can attach zone map statistics (min/max values) for each column. The filter operator can then skip the entire chunk without evaluating rows when the zone map proves no rows can match the predicate.

Example

If filtering age > 100 and the chunk’s max age is 80, the entire chunk can be skipped because no row can possibly match.

Fields

column_hints: FxHashMap<usize, ZoneMapEntry>

Zone map entries keyed by column index.

Trait Implementations

impl Clone for ChunkZoneHints

fn clone(&self) -> ChunkZoneHints

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ChunkZoneHints

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ChunkZoneHints

fn default() -> ChunkZoneHints

Returns the “default value” for a type.