Struct WindowAggExec 

pub struct WindowAggExec { /* private fields */ }

Window execution plan

Implementations

impl WindowAggExec

pub fn try_new( window_expr: Vec<Arc<dyn WindowExpr>>, input: Arc<dyn ExecutionPlan>, can_repartition: bool, ) -> Result<Self>

Create a new execution plan for window aggregates

pub fn window_expr(&self) -> &[Arc<dyn WindowExpr>]

Window expressions

pub fn input(&self) -> &Arc<dyn ExecutionPlan>

Input plan

pub fn partition_by_sort_keys(&self) -> Result<Vec<PhysicalSortExpr>>

Return the output sort order of partition keys: For example OVER(PARTITION BY a, ORDER BY b) -> would give sorting of the column a

pub fn partition_keys(&self) -> Vec<Arc<dyn PhysicalExpr>>

impl WindowAggExec

pub fn try_from_proto( node: &PhysicalPlanNode, ctx: &ExecutionPlanDecodeCtx<'_>, ) -> Result<Arc<dyn ExecutionPlan>>

Available on crate feature proto only.

Reconstruct a window plan from its protobuf representation.

This returns a WindowAggExec when input_order_mode is absent and a BoundedWindowAggExec when it is present.

Trait Implementations

impl Clone for WindowAggExec

fn clone(&self) -> WindowAggExec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WindowAggExec

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

Formats the value using the given formatter.

impl DisplayAs for WindowAggExec

fn fmt_as(&self, t: DisplayFormatType, f: &mut Formatter<'_>) -> Result

Format according to DisplayFormatType, used when verbose representation looks different from the default one

impl ExecutionPlan for WindowAggExec

fn properties(&self) -> &Arc<PlanProperties>

Return a reference to Any that can be used for downcasting

fn name(&self) -> &'static str

Short name for the ExecutionPlan, such as ‘DataSourceExec’.

fn children(&self) -> Vec<&Arc<dyn ExecutionPlan>>

Get a list of children ExecutionPlans that act as inputs to this plan. The returned list will be empty for leaf nodes such as scans, will contain a single value for unary nodes, or two values for binary nodes (such as joins).

fn apply_expressions( &self, f: &mut dyn FnMut(&Arc<dyn PhysicalExpr>) -> Result<TreeNodeRecursion>, ) -> Result<TreeNodeRecursion>

Apply a closure f to each root expression that this node owns and uses during execution, either by evaluating it or updating it dynamically.

fn maintains_input_order(&self) -> Vec<bool>

Returns false if this ExecutionPlan’s implementation may reorder rows within or between partitions.

fn required_input_ordering(&self) -> Vec<Option<OrderingRequirements>>

Specifies the ordering required for all of the children of this ExecutionPlan.

fn required_input_distribution(&self) -> Vec<Distribution>

👎Deprecated since 55.0.0:

Use input_distribution_requirements

Specifies simple per-child input distribution requirements.

fn input_distribution_requirements(&self) -> InputDistributionRequirements

Specifies the input distribution requirements for this plan.

fn replace_children( self: Arc<Self>, children: Vec<Arc<dyn ExecutionPlan>>, options: ReplaceChildrenOptions, ) -> Result<Arc<dyn ExecutionPlan>>

Returns a clone of the existing plan with the children replaced, skipping recomputation of plan properties when the options indicate the new children’s properties are unchanged.

fn with_new_children( self: Arc<Self>, children: Vec<Arc<dyn ExecutionPlan>>, ) -> Result<Arc<dyn ExecutionPlan>>

👎Deprecated since 55.0.0:

Use ExecutionPlan::replace_children with ReplaceChildrenOptions

Deprecated.

fn with_new_children_and_same_properties( self: Arc<Self>, children: Vec<Arc<dyn ExecutionPlan>>, ) -> Result<Arc<dyn ExecutionPlan>>

👎Deprecated since 55.0.0:

Use ExecutionPlan::replace_children with ReplaceChildrenOptions

Deprecated. Implement ExecutionPlan::replace_children instead.

fn execute( &self, partition: usize, context: Arc<TaskContext>, ) -> Result<SendableRecordBatchStream>

Begin execution of partition, returning a Stream of RecordBatches.

fn metrics(&self) -> Option<MetricsSet>

Return a snapshot of the set of Metrics for this ExecutionPlan. If no Metrics are available, return None.

fn child_stats_requests(&self, partition: Option<usize>) -> Vec<ChildStats>

Returns, per child, which statistics the StatisticsContext should resolve before calling Self::statistics_from_inputs.

fn statistics_from_inputs( &self, input_stats: &[Arc<Statistics>], _args: &StatisticsArgs, ) -> Result<Arc<Statistics>>

Returns statistics for a specific partition of this ExecutionPlan node, given pre-computed child statistics.

fn cardinality_effect(&self) -> CardinalityEffect

Gets the effect on cardinality, if known

fn try_to_proto( &self, ctx: &ExecutionPlanEncodeCtx<'_>, ) -> Result<Option<PhysicalPlanNode>>

Available on crate feature proto only.

Serialize this plan to its protobuf representation, if it knows how.

fn static_name() -> &'static str

where Self: Sized,

Short name for the ExecutionPlan, such as ‘DataSourceExec’. Like name but can be called without an instance.

fn downcast_delegate(&self) -> Option<&dyn ExecutionPlan>

Returns the plan that provides this plan’s public ExecutionPlan downcast identity.

fn schema(&self) -> SchemaRef

Get the schema for this execution plan

fn check_invariants(&self, check: InvariantLevel) -> Result<()>

Returns an error if this individual node does not conform to its invariants. These invariants are typically only checked in debug mode.

fn dynamic_expressions_produced(&self) -> Vec<Arc<dyn PhysicalExpr>>

Returns the dynamic expressions produced by this plan node.

fn benefits_from_input_partitioning(&self) -> Vec<bool>

Specifies whether the ExecutionPlan benefits from increased parallelization at its input for each child.

fn reset_state(self: Arc<Self>) -> Result<Arc<dyn ExecutionPlan>>

Reset any internal state within this ExecutionPlan.

fn repartitioned( &self, _target_partitions: usize, _config: &ConfigOptions, ) -> Result<Option<Arc<dyn ExecutionPlan>>>

If supported, attempt to increase the partitioning of this ExecutionPlan to produce target_partitions partitions.

fn partition_statistics( &self, partition: Option<usize>, ) -> Result<Arc<Statistics>>

👎Deprecated since 55.0.0:

Use StatisticsContext::compute instead

Returns statistics for a specific partition of this ExecutionPlan node.

fn supports_limit_pushdown(&self) -> bool

Returns true if a limit can be safely pushed down through this ExecutionPlan node.

fn with_fetch(&self, _limit: Option<usize>) -> Option<Arc<dyn ExecutionPlan>>

Returns a fetching variant of this ExecutionPlan node, if it supports fetch limits. Returns None otherwise.

fn fetch(&self) -> Option<usize>

Gets the fetch count for the operator, None means there is no fetch.

fn try_swapping_with_projection( &self, _projection: &ProjectionExec, ) -> Result<Option<Arc<dyn ExecutionPlan>>>

Attempts to push down the given projection into the input of this ExecutionPlan.

fn gather_filters_for_pushdown( &self, _phase: FilterPushdownPhase, parent_filters: Vec<Arc<dyn PhysicalExpr>>, _config: &ConfigOptions, ) -> Result<FilterDescription>

Collect filters that this node can push down to its children. Filters that are being pushed down from parents are passed in, and the node may generate additional filters to push down. For example, given the plan FilterExec -> HashJoinExec -> DataSourceExec, what will happen is that we recurse down the plan calling ExecutionPlan::gather_filters_for_pushdown:

fn handle_child_pushdown_result( &self, _phase: FilterPushdownPhase, child_pushdown_result: ChildPushdownResult, _config: &ConfigOptions, ) -> Result<FilterPushdownPropagation<Arc<dyn ExecutionPlan>>>

Handle the result of a child pushdown.

fn with_new_state( &self, _state: Arc<dyn Any + Send + Sync>, ) -> Option<Arc<dyn ExecutionPlan>>

Injects arbitrary run-time state into this execution plan, returning a new plan instance that incorporates that state if it is relevant to the concrete node implementation.

fn try_pushdown_sort( &self, _order: &[PhysicalSortExpr], ) -> Result<SortOrderPushdownResult<Arc<dyn ExecutionPlan>>>

Try to push down sort ordering requirements to this node.

fn with_preserve_order( &self, _preserve_order: bool, ) -> Option<Arc<dyn ExecutionPlan>>

Returns a variant of this ExecutionPlan that is aware of order-sensitivity.