Struct Statistics 

pub struct Statistics {
    pub row_count: usize,
    pub row_size: usize,
    pub columns: Vec<ColumnStatistics>,
    pub indexes: Vec<IndexStatistics>,
}

Statistics for a table or relation.

Fields

row_count: usize

Number of rows.

row_size: usize

Average row size in bytes.

columns: Vec<ColumnStatistics>

Column statistics.

indexes: Vec<IndexStatistics>

Available indexes.

Implementations

impl Statistics

pub fn new(row_count: usize, row_size: usize) -> Self

Create new statistics.

pub fn total_size(&self) -> usize

Total size in bytes.

pub fn with_column(self, col_stats: ColumnStatistics) -> Self

Add column statistics.

pub fn with_index(self, idx_stats: IndexStatistics) -> Self

Add index statistics.

Trait Implementations

impl Clone for Statistics

fn clone(&self) -> Statistics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Statistics

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Statistics

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Statistics

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

where __S: Serializer,

Serialize this value into the given Serde serializer.