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Group

cartel_sqlite::dsl::agg

Struct Group 

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pub struct Group<T, K>(/* private fields */);

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impl<T, K> Group<T, K>

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pub fn count(self) -> Vec<(K, i64)>

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pub fn sum<F, U>(self, map: F) -> Vec<(K, Option<U>)>
where F: FnOnce(T) -> U,

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pub fn having<F>(self, pred: F) -> Self
where F: FnOnce(T, Handle) -> bool,

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pub fn order_by<F, U>(self, key: F) -> Self
where F: FnOnce(T) -> U,

Auto Trait Implementations§

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impl<T, K> Freeze for Group<T, K>
where Never<(T, K)>: Freeze,

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impl<T, K> RefUnwindSafe for Group<T, K>
where Never<(T, K)>: RefUnwindSafe,

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impl<T, K> Send for Group<T, K>
where Never<(T, K)>: Send,

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impl<T, K> Sync for Group<T, K>
where Never<(T, K)>: Sync,

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impl<T, K> Unpin for Group<T, K>
where Never<(T, K)>: Unpin,

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impl<T, K> UnsafeUnpin for Group<T, K>
where Never<(T, K)>: UnsafeUnpin,

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impl<T, K> UnwindSafe for Group<T, K>
where Never<(T, K)>: UnwindSafe,

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> Convert<T> for T

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fn into(self) -> 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, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<'w, 'd, W, P, ID> Sink<'w, 'd, W, ID, Never> for P
where ID: Identity, W: Spec<TerminalFailure = Never> + 'w, P: ?Sized,

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fn fail(&self, _: Id<'d, ID>, cause: Error<'w, W>, _: &mut Token<Identity<'d>>)

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impl<'w, 'd, W, P, ID> Sink<'w, 'd, W, ID, Never> for P
where ID: Identity, W: Spec<OpenFailure = Never> + 'w, P: ?Sized,

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fn fail( &self, _: Completion<'_, 'd, ID>, cause: Error<'w, W>, _: &mut Context<'_, 'd>, )

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.