Skip to main content

Star

clicktype_query::aggregate

Struct Star 

Source 
pub struct Star;
Expand description

Star expression for COUNT(*)

Trait Implementations§

Source§

impl Expression for Star

Source§

type Output = u64

The output type of this expression
Source§

fn render(&self) -> String

Render the expression to SQL
Source§

fn is_aggregate(&self) -> bool

Whether this is an aggregate expression

Auto Trait Implementations§

§

impl Freeze for Star

§

impl RefUnwindSafe for Star

§

impl Send for Star

§

impl Sync for Star

§

impl Unpin for Star

§

impl UnwindSafe for Star

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<E> Arithmetic for E
where E: Expression, <E as Expression>::Output: Numeric,

Source§

fn add<R>(self, rhs: R) -> ArithExpr<Self, R, Add>
where R: Expression, R::Output: Numeric,

Source§

fn sub<R>(self, rhs: R) -> ArithExpr<Self, R, Sub>
where R: Expression, R::Output: Numeric,

Source§

fn mul<R>(self, rhs: R) -> ArithExpr<Self, R, Mul>
where R: Expression, R::Output: Numeric,

Source§

fn div<R>(self, rhs: R) -> ArithExpr<Self, R, Div>
where R: Expression, R::Output: Numeric,

Source§

fn modulo<R>(self, rhs: R) -> ArithExpr<Self, R, Mod>
where R: Expression, R::Output: Numeric,

Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<E> Comparable for E
where E: Expression,

Source§

fn eq<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Eq>
where R: Into<Literal<Self::Output>>,

Source§

fn ne<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Ne>
where R: Into<Literal<Self::Output>>,

Source§

fn lt<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Lt>
where R: Into<Literal<Self::Output>>,

Source§

fn le<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Le>
where R: Into<Literal<Self::Output>>,

Source§

fn gt<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Gt>
where R: Into<Literal<Self::Output>>,

Source§

fn ge<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Ge>
where R: Into<Literal<Self::Output>>,

Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

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

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

impl<E> NullOps for E
where E: Expression,

Source§

fn is_null(self) -> IsNullExpr<Self>

Source§

fn is_not_null(self) -> IsNotNullExpr<Self>

Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.