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CollectionStats

Struct CollectionStats 

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pub struct CollectionStats {
    pub total_points: u64,
    pub payload_size_bytes: u64,
    pub field_stats: HashMap<String, ColumnStats>,
    pub row_count: u64,
    pub deleted_count: u64,
    pub avg_row_size_bytes: u64,
    pub total_size_bytes: u64,
    pub column_stats: HashMap<String, ColumnStats>,
    pub index_stats: HashMap<String, IndexStats>,
    pub last_analyzed_epoch_ms: Option<u64>,
}
Expand description

Statistics for a collection.

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§total_points: u64

Total number of points in the collection.

§payload_size_bytes: u64

Total payload storage footprint in bytes.

§field_stats: HashMap<String, ColumnStats>

Per-field statistics for cost-based planning.

§row_count: u64

Number of active rows

§deleted_count: u64

Number of deleted/tombstoned rows

§avg_row_size_bytes: u64

Average row size in bytes

§total_size_bytes: u64

Total collection size in bytes

§column_stats: HashMap<String, ColumnStats>

Statistics per column

§index_stats: HashMap<String, IndexStats>

Statistics per index

§last_analyzed_epoch_ms: Option<u64>

Timestamp of last ANALYZE

Implementations§

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impl CollectionStats

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pub fn new() -> Self

Creates empty statistics

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pub fn with_counts(row_count: u64, deleted_count: u64) -> Self

Creates statistics with basic counts

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pub fn live_row_count(&self) -> u64

Returns the live row count (excluding deleted)

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pub fn deletion_ratio(&self) -> f64

Returns the deletion ratio (0.0-1.0)

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pub fn estimate_selectivity(&self, column: &str) -> f64

Estimates selectivity for a column based on cardinality

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pub fn mark_analyzed(&mut self)

Sets the last analyzed timestamp to now

Trait Implementations§

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impl Clone for CollectionStats

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fn clone(&self) -> CollectionStats

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CollectionStats

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

Formats the value using the given formatter. Read more
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impl Default for CollectionStats

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fn default() -> CollectionStats

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for CollectionStats

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for CollectionStats

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

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