Module class 

Structs

ConstExpr

A structure representing a expression known to be constant in a physical execution plan.

EquivalenceClass

An EquivalenceClass is a set of Arc<dyn PhysicalExpr>s that are known to have the same value for all tuples in a relation. These are generated by equality predicates (e.g. a = b), typically equi-join conditions and equality conditions in filters.

EquivalenceGroup

A collection of distinct EquivalenceClasses. This object supports fast lookups of expressions and their equivalence classes.

Enums

AcrossPartitions

Represents whether a constant expression’s value is uniform or varies across partitions. Has two variants:

Type Aliases

AugmentedMapping 🔒