Enum PartitionGranularity 

pub enum PartitionGranularity {
    Day,
    Week,
    Month,
    Quarter,
    Year,
}

Granularity of each partition range for time-based partitioning.

Coarser granularities reduce partition count but increase scan cost per query. Use PartitionGranularity::next_coarser to step down when the dialect’s partition limit would be exceeded.

Variants

Day

One partition per calendar day.

Week

One partition per ISO week (Monday–Sunday).

Month

One partition per calendar month.

Quarter

One partition per calendar quarter.

Year

One partition per calendar year.

Implementations

impl PartitionGranularity

pub const fn next_coarser(self) -> Option<Self>

Returns the next coarser granularity (Day → Week → Month → Quarter → Year), or None when already at Year.

Drives the auto-coarsening loop in the materializer’s select_grain helper when the requested grain would exceed partition_budget.

pub const fn approx_days(self) -> u32

Approximate number of days per granule. Used for partition-count arithmetic in select_grain.

Trait Implementations

impl Clone for PartitionGranularity

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PartitionGranularity

impl Debug for PartitionGranularity

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PartitionGranularity

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PartitionGranularity

impl PartialEq for PartitionGranularity

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for PartitionGranularity

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PartitionGranularity