Struct datafusion::physical_plan::explain::ExplainExec

pub struct ExplainExec { /* fields omitted */ }

Explain execution plan operator. This operator contains the string values of the various plans it has when it is created, and passes them to its output.

Implementations

impl ExplainExec

pub fn new(schema: SchemaRef, stringified_plans: Vec<StringifiedPlan>) -> Self

Create a new ExplainExec

pub fn stringified_plans(&self) -> &[StringifiedPlan]

The strings to be printed

Trait Implementations

impl Clone for ExplainExec

fn clone(&self) -> ExplainExec

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExplainExec

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

Formats the value using the given formatter.

impl ExecutionPlan for ExplainExec

fn as_any(&self) -> &dyn Any

Return a reference to Any that can be used for downcasting

fn schema(&self) -> SchemaRef

Get the schema for this execution plan

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

Get a list of child execution plans that provide the input for this plan. The returned list will be empty for leaf nodes, will contain a single value for unary nodes, or two values for binary nodes (such as joins).

fn output_partitioning(&self) -> Partitioning

Get the output partitioning of this plan

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

Returns a new plan where all children were replaced by new plans. The size of children must be equal to the size of ExecutionPlan::children().

fn execute<'life0, 'async_trait>(
    &'life0 self,
    partition: usize
) -> Pin<Box<dyn Future<Output = Result<SendableRecordBatchStream>> + Send + 'async_trait>> where
    'life0: 'async_trait,
    Self: 'async_trait, 

creates an iterator

fn required_child_distribution(&self) -> Distribution

Specifies the data distribution requirements of all the children for this operator

fn metrics(&self) -> HashMap<String, SQLMetric>

Return a snapshot of the metrics collected during execution