Struct GroupedQuery

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pub struct GroupedQuery<'s, 'db, S: Schema, B: Selectable<S>, G: Selectable<S>> { /* private fields */ }

Expand description

One query lineage grouped by a second attached binding for aggregation.

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impl<'s, 'db, S: Schema, B: Selectable<S>, G: Selectable<S>> GroupedQuery<'s, 'db, S, B, G>

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pub fn close(&self)

Explicitly close this independently owned grouped-query lineage.

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pub fn is_closed(&self) -> bool

Return whether this grouped query was explicitly closed.

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pub async fn aggregate<T: AggregateTuple<S>>( &self, terms: T, ) -> Result<Vec<(G::Output, T::Output)>>

Reduce each witnessed distinct group identity to one typed tuple, returning materialized group keys with their aggregate values.

Auto Trait Implementations§

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impl<'s, 'db, S, B, G> Send for GroupedQuery<'s, 'db, S, B, G>
where Query<'s, 'db, S, B>: Send, G: Send,

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impl<'s, 'db, S, B, G> Sync for GroupedQuery<'s, 'db, S, B, G>
where Query<'s, 'db, S, B>: Sync, G: Sync,

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impl<'s, 'db, S, B, G> Unpin for GroupedQuery<'s, 'db, S, B, G>
where Query<'s, 'db, S, B>: Unpin, G: Unpin,

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impl<'s, 'db, S, B, G> UnsafeUnpin for GroupedQuery<'s, 'db, S, B, G>
where Query<'s, 'db, S, B>: UnsafeUnpin, G: UnsafeUnpin,

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impl<T> Any for T
where T: 'static + ?Sized,

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where T: ?Sized,

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self> ⓘ

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where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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