Crate datafusion_physical_expr

Re-exports

• pub use analysis::analyze;
• pub use analysis::AnalysisContext;
• pub use analysis::ExprBoundaries;
• pub use equivalence::calculate_union;
• pub use equivalence::ConstExpr;
• pub use equivalence::EquivalenceProperties;
• pub use planner::create_physical_expr;
• pub use planner::create_physical_exprs;
• pub use utils::split_conjunction;

Modules

• aggregate
• analysis
  Interval and selectivity in AnalysisContext
• binary_map
• equivalence
• execution_props
• expressions
  Defines physical expressions that can evaluated at runtime during query execution
• functions
  Deprecated module. Add new feature in scalar_function.rs
• intervals
  Interval arithmetic and constraint propagation library
• math_expressions
  Math expressions
• planner
• tree_node
• udf
• utils
• window

Structs

• AggregatePhysicalExpressions
  Stores the physical expressions used inside the AggregateExpr.
• GroupsAccumulatorAdapter
  An adapter that implements GroupsAccumulator for any Accumulator
• NullState
  Track the accumulator null state per row: if any values for that group were null and if any values have been seen at all for that group.
• PhysicalSortExpr
  Represents Sort operation for a column in a RecordBatch
• PhysicalSortRequirement
  Represents sort requirement associated with a plan
• ScalarFunctionExpr
  Physical expression of a scalar function

Enums

• Distribution
  How data is distributed amongst partitions. See Partitioning for more details.
• Partitioning
  Output partitioning supported by ExecutionPlans.

Traits

• AggregateExpr
  An aggregate expression that:
• PhysicalExpr
  See create_physical_expr for examples of creating PhysicalExpr from Expr

Functions

• physical_exprs_bag_equal
  Checks whether the given physical expression slices are equal in the sense of bags (multi-sets), disregarding their orderings.
• physical_exprs_contains
  This function is similar to the contains method of Vec. It finds whether expr is among physical_exprs.
• physical_exprs_equal
  Checks whether the given physical expression slices are equal.
• reverse_order_bys
  Reverses the ORDER BY expression, which is useful during equivalent window expression construction. For instance, ‘ORDER BY a ASC, NULLS LAST’ turns into ‘ORDER BY a DESC, NULLS FIRST’.

Type Aliases

• LexOrdering
  LexOrdering is an alias for the type Vec<PhysicalSortExpr>, which represents a lexicographical ordering.
• LexOrderingRef
  LexOrderingRef is an alias for the type &[PhysicalSortExpr], which represents a reference to a lexicographical ordering.
• LexRequirement
  LexRequirement is an alias for the type Vec<PhysicalSortRequirement>, which represents a lexicographical ordering requirement.
• LexRequirementRef
  LexRequirementRef is an alias for the type &[PhysicalSortRequirement], which represents a reference to a lexicographical ordering requirement.
• PhysicalExprRef
  Shared PhysicalExpr.