Enum GpuGroupByStrategy 

pub enum GpuGroupByStrategy {
    Hash(GpuHashStrategy),
    RadixSort,
}

Adaptive algorithm selection strategy

Variants

Hash(GpuHashStrategy)

Use hash-based GROUP BY (good for low-medium cardinality)

RadixSort

Use radix sort-based GROUP BY (good for high cardinality)

Implementations

impl GpuGroupByStrategy

pub fn choose_for_cardinality(estimated_groups: usize) -> Self

Choose optimal GROUP BY strategy based on estimated cardinality

Heuristics:

• < 100K groups: Use hash-based (Linear/Cuckoo/RobinHood)

• = 100K groups: Use radix sort

pub fn choose_with_override(estimated_groups: usize, force_radix: bool) -> Self

Choose optimal strategy with manual override

Trait Implementations

impl Clone for GpuGroupByStrategy

fn clone(&self) -> GpuGroupByStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GpuGroupByStrategy

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

Formats the value using the given formatter.

impl PartialEq for GpuGroupByStrategy

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for GpuGroupByStrategy

impl Eq for GpuGroupByStrategy

impl StructuralPartialEq for GpuGroupByStrategy