Struct datafusion_physical_expr::equivalence::EquivalenceProperties

pub struct EquivalenceProperties { /* private fields */ }

Equivalence Properties is a vec of EquivalentClass.

Implementations

impl EquivalenceProperties

pub fn new(schema: SchemaRef) -> Self

pub fn classes(&self) -> &[EquivalentClass]

pub fn schema(&self) -> SchemaRef

pub fn extend<I: IntoIterator<Item = EquivalentClass>>(&mut self, iter: I)

pub fn add_equal_conditions(&mut self, new_conditions: (&Column, &Column))

Add new equal conditions into the EquivalenceProperties, the new equal conditions are usually comming from the equality predicates in Join or Filter

Trait Implementations

impl Clone for EquivalenceProperties

fn clone(&self) -> EquivalenceProperties

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for EquivalenceProperties

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

Formats the value using the given formatter.