Struct datafusion::physical_plan::values::ValuesExec
source · pub struct ValuesExec { /* private fields */ }
Expand description
Execution plan for values list based relation (produces constant rows)
Implementations§
Trait Implementations§
source§impl Debug for ValuesExec
impl Debug for ValuesExec
source§impl DisplayAs for ValuesExec
impl DisplayAs for ValuesExec
source§impl ExecutionPlan for ValuesExec
impl ExecutionPlan for ValuesExec
source§fn output_partitioning(&self) -> Partitioning
fn output_partitioning(&self) -> Partitioning
Get the output partitioning of this plan
source§fn children(&self) -> Vec<Arc<dyn ExecutionPlan>>
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).
source§fn output_ordering(&self) -> Option<&[PhysicalSortExpr]>
fn output_ordering(&self) -> Option<&[PhysicalSortExpr]>
If the output of this operator within each partition is sorted,
returns
Some(keys)
with the description of how it was sorted. Read moresource§fn with_new_children(
self: Arc<Self>,
_: Vec<Arc<dyn ExecutionPlan>>
) -> Result<Arc<dyn ExecutionPlan>>
fn with_new_children( self: Arc<Self>, _: Vec<Arc<dyn ExecutionPlan>> ) -> Result<Arc<dyn ExecutionPlan>>
Returns a new plan where all children were replaced by new plans.
source§fn execute(
&self,
partition: usize,
_context: Arc<TaskContext>
) -> Result<SendableRecordBatchStream>
fn execute( &self, partition: usize, _context: Arc<TaskContext> ) -> Result<SendableRecordBatchStream>
creates an iterator
source§fn statistics(&self) -> Statistics
fn statistics(&self) -> Statistics
Returns the global output statistics for this
ExecutionPlan
node.source§fn unbounded_output(&self, _children: &[bool]) -> Result<bool>
fn unbounded_output(&self, _children: &[bool]) -> Result<bool>
Specifies whether this plan generates an infinite stream of records.
If the plan does not support pipelining, but its input(s) are
infinite, returns an error to indicate this.
source§fn required_input_distribution(&self) -> Vec<Distribution>
fn required_input_distribution(&self) -> Vec<Distribution>
Specifies the data distribution requirements for all the
children for this operator, By default it’s [Distribution::UnspecifiedDistribution] for each child,
source§fn required_input_ordering(&self) -> Vec<Option<Vec<PhysicalSortRequirement>>>
fn required_input_ordering(&self) -> Vec<Option<Vec<PhysicalSortRequirement>>>
Specifies the ordering requirements for all of the children
For each child, it’s the local ordering requirement within
each partition rather than the global ordering Read more
source§fn maintains_input_order(&self) -> Vec<bool>
fn maintains_input_order(&self) -> Vec<bool>
Returns
false
if this operator’s implementation may reorder
rows within or between partitions. Read moresource§fn benefits_from_input_partitioning(&self) -> Vec<bool>
fn benefits_from_input_partitioning(&self) -> Vec<bool>
Specifies whether the operator benefits from increased parallelization
at its input for each child. If set to
true
, this indicates that the
operator would benefit from partitioning its corresponding child
(and thus from more parallelism). For operators that do very little work
the overhead of extra parallelism may outweigh any benefits Read moresource§fn equivalence_properties(&self) -> EquivalenceProperties
fn equivalence_properties(&self) -> EquivalenceProperties
Get the EquivalenceProperties within the plan
source§fn ordering_equivalence_properties(&self) -> OrderingEquivalenceProperties
fn ordering_equivalence_properties(&self) -> OrderingEquivalenceProperties
Get the OrderingEquivalenceProperties within the plan
source§fn metrics(&self) -> Option<MetricsSet>
fn metrics(&self) -> Option<MetricsSet>
source§fn file_scan_config(&self) -> Option<&FileScanConfig>
fn file_scan_config(&self) -> Option<&FileScanConfig>
Returns the
FileScanConfig
in case this is a data source scanning execution plan or None
otherwise.Auto Trait Implementations§
impl !RefUnwindSafe for ValuesExec
impl Send for ValuesExec
impl Sync for ValuesExec
impl Unpin for ValuesExec
impl !UnwindSafe for ValuesExec
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more