Struct datafusion::physical_plan::union::UnionExec
source · [−]pub struct UnionExec { /* private fields */ }
Expand description
UNION ALL execution plan
Implementations
Trait Implementations
sourceimpl ExecutionPlan for UnionExec
impl ExecutionPlan for UnionExec
sourcefn output_partitioning(&self) -> Partitioning
fn output_partitioning(&self) -> Partitioning
Output of the union is the combination of all output partitions of the inputs
sourcefn children(&self) -> Vec<Arc<dyn ExecutionPlan>>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
fn children(&self) -> Vec<Arc<dyn ExecutionPlan>>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A>where
A: Allocator,
A: Allocator,
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). Read more
sourcefn output_ordering(&self) -> Option<&[PhysicalSortExpr]>
fn output_ordering(&self) -> Option<&[PhysicalSortExpr]>
If the output of this operator is sorted, returns
Some(keys)
with the description of how it was sorted. Read moresourcefn relies_on_input_order(&self) -> bool
fn relies_on_input_order(&self) -> bool
Returns
true
if this operator relies on its inputs being
produced in a certain order (for example that they are sorted
a particular way) for correctness. Read moresourcefn with_new_children(
self: Arc<Self>,
children: Vec<Arc<dyn ExecutionPlan>>
) -> Result<Arc<dyn ExecutionPlan>>
fn with_new_children(
self: Arc<Self>,
children: Vec<Arc<dyn ExecutionPlan>>
) -> Result<Arc<dyn ExecutionPlan>>
Returns a new plan where all children were replaced by new plans.
sourcefn execute(
&self,
partition: usize,
context: Arc<TaskContext>
) -> Result<SendableRecordBatchStream>
fn execute(
&self,
partition: usize,
context: Arc<TaskContext>
) -> Result<SendableRecordBatchStream>
creates an iterator
sourcefn fmt_as(&self, t: DisplayFormatType, f: &mut Formatter<'_>) -> Result
fn fmt_as(&self, t: DisplayFormatType, f: &mut Formatter<'_>) -> Result
sourcefn metrics(&self) -> Option<MetricsSet>
fn metrics(&self) -> Option<MetricsSet>
sourcefn statistics(&self) -> Statistics
fn statistics(&self) -> Statistics
Returns the global output statistics for this
ExecutionPlan
node.sourcefn benefits_from_input_partitioning(&self) -> bool
fn benefits_from_input_partitioning(&self) -> bool
Returns
true
if this operator would benefit from
partitioning its input (and thus from more parallelism). For
operators that do very little work the overhead of extra
parallelism may outweigh any benefits Read moresourcefn required_child_distribution(&self) -> Distribution
fn required_child_distribution(&self) -> Distribution
Specifies the data distribution requirements of all the
children for this operator Read more
sourcefn maintains_input_order(&self) -> bool
fn maintains_input_order(&self) -> bool
Returns
false
if this operator’s implementation may reorder
rows within or between partitions. Read moreAuto Trait Implementations
impl !RefUnwindSafe for UnionExec
impl Send for UnionExec
impl Sync for UnionExec
impl Unpin for UnionExec
impl !UnwindSafe for UnionExec
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more