pub struct PartialGroupByMerger { /* private fields */ }Expand description
Merger for distributed GROUP BY results.
Implementations§
Source§impl PartialGroupByMerger
impl PartialGroupByMerger
pub fn new() -> Self
Sourcepub fn add_shard_results(&mut self, partials: &[PartialGroup])
pub fn add_shard_results(&mut self, partials: &[PartialGroup])
Add a shard’s partial GROUP BY results.
Sourcepub fn finalize(&self) -> Vec<&PartialGroup>
pub fn finalize(&self) -> Vec<&PartialGroup>
Get the merged results.
Sourcepub fn group_count(&self) -> usize
pub fn group_count(&self) -> usize
Number of distinct groups.
Trait Implementations§
Auto Trait Implementations§
impl Freeze for PartialGroupByMerger
impl RefUnwindSafe for PartialGroupByMerger
impl Send for PartialGroupByMerger
impl Sync for PartialGroupByMerger
impl Unpin for PartialGroupByMerger
impl UnsafeUnpin for PartialGroupByMerger
impl UnwindSafe for PartialGroupByMerger
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impl<T> ArchivePointee for T
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type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
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_: &<T as ArchivePointee>::ArchivedMetadata,
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Converts some archived metadata to the pointer metadata for itself.
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Returns the layout of the type.
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