Struct datafusion_physical_expr::equivalence::EquivalenceProperties

pub struct EquivalenceProperties<T = Column> { /* private fields */ }

Equivalence Properties is a vec of EquivalentClass.

Implementations

impl<T: Eq + Hash + Clone> EquivalenceProperties<T>

pub fn new(schema: SchemaRef) -> Self

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

pub fn schema(&self) -> SchemaRef

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

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

Adds new equal conditions into the EquivalenceProperties. New equal conditions usually come from equality predicates in a join/filter.

Trait Implementations

impl<T: Clone> Clone for EquivalenceProperties<T>

fn clone(&self) -> EquivalenceProperties<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for EquivalenceProperties<T>

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

Formats the value using the given formatter.