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CountExpr

sqlxo::select

Struct CountExpr 

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pub struct CountExpr<C: Column>(/* private fields */);

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impl<C: Column> CountExpr<C>

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pub const fn new() -> Self

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impl<C> CountExpr<C>
where C: Column,

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pub fn eq<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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pub fn ne<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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pub fn gt<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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pub fn ge<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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pub fn lt<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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pub fn le<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

Trait Implementations§

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impl<C> AggregateSelectionExpr for CountExpr<C>
where C: Column,

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fn selection(&self) -> AggregateSelection

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impl<C: Clone + Column> Clone for CountExpr<C>

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fn clone(&self) -> CountExpr<C>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<C: Column> Default for CountExpr<C>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<C> SelectionExpr for CountExpr<C>
where C: Column,

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type Output = i64

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fn record(self, entries: &mut SmallVec<[SelectionEntry; 4]>)

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impl<C: Copy + Column> Copy for CountExpr<C>

Auto Trait Implementations§

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impl<C> Freeze for CountExpr<C>

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impl<C> RefUnwindSafe for CountExpr<C>
where C: RefUnwindSafe,

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impl<C> Send for CountExpr<C>
where C: Send,

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impl<C> Sync for CountExpr<C>
where C: Sync,

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impl<C> Unpin for CountExpr<C>
where C: Unpin,

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impl<C> UnsafeUnpin for CountExpr<C>

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impl<C> UnwindSafe for CountExpr<C>
where C: UnwindSafe,

Blanket Implementations§

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impl<T> AggregatePredicateBuilder for T
where T: AggregateSelectionExpr + Copy,

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fn compare<T>(self, op: ComparisonOp, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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fn eq<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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fn ne<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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fn gt<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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fn ge<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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fn lt<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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fn le<T>(self, value: T) -> HavingPredicate
where T: Clone + Send + Sync + 'static + Encode<'static, Postgres> + Type<Postgres>,

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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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> GetDeleteMarker for T

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default fn delete_marker_field() -> Option<&'static str>

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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>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

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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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

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

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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more