Struct ColumnChunkStats 

pub struct ColumnChunkStats {
    pub min: Option<Value>,
    pub max: Option<Value>,
    pub guaranteed_no_nulls: bool,
    pub guaranteed_all_nulls: bool,
}

Statistics for a column chunk, used for zone map predicate checking.

Fields

min: Option<Value>

Minimum value in the chunk (None if unknown).

max: Option<Value>

Maximum value in the chunk (None if unknown).

guaranteed_no_nulls: bool

Whether the chunk is guaranteed to have no nulls.

guaranteed_all_nulls: bool

Whether the chunk is guaranteed to have all nulls.

Implementations

impl ColumnChunkStats

pub fn new(min: Option<Value>, max: Option<Value>) -> Self

pub fn all_nulls() -> Self

Create stats for an all-null chunk.

pub fn update(&mut self, val: &Value)

Update min/max with a new value.

Works for every ordered primitive Value type (numeric, Bool, String, Date/Timestamp variants, InternalID). Null values are not ordered: they clear guaranteed_no_nulls and leave min/max untouched so a later non-null value is not compared against a Null sentinel.

Values whose type cannot be ordered relative to the existing min/max (mismatched types, Blob/List/Map/…) are ignored for the min/max bounds — the stats stay conservative and never cause a wrong SkipScan (P52.22).

Trait Implementations

impl Clone for ColumnChunkStats

fn clone(&self) -> ColumnChunkStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnChunkStats

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

Formats the value using the given formatter.