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IfExpr

clicktype_query::functions::conditional

Struct IfExpr 

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pub struct IfExpr<C, T, E>
where
    C: Expression<Output = bool>,
    T: Expression,
    E: Expression,
{ /* private fields */ }
Expand description

if(condition, then, else) - conditional expression

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impl<C, T, E> Expression for IfExpr<C, T, E>
where C: Expression<Output = bool>, T: Expression, E: Expression<Output = T::Output>,

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type Output = <T as Expression>::Output

The output type of this expression
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fn render(&self) -> String

Render the expression to SQL
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fn is_aggregate(&self) -> bool

Whether this is an aggregate expression

Auto Trait Implementations§

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impl<C, T, E> Freeze for IfExpr<C, T, E>
where C: Freeze, T: Freeze, E: Freeze,

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impl<C, T, E> RefUnwindSafe for IfExpr<C, T, E>
where C: RefUnwindSafe, T: RefUnwindSafe, E: RefUnwindSafe,

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impl<C, T, E> Send for IfExpr<C, T, E>
where C: Send, T: Send, E: Send,

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impl<C, T, E> Sync for IfExpr<C, T, E>
where C: Sync, T: Sync, E: Sync,

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impl<C, T, E> Unpin for IfExpr<C, T, E>
where C: Unpin, T: Unpin, E: Unpin,

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impl<C, T, E> UnwindSafe for IfExpr<C, T, E>
where C: UnwindSafe, T: UnwindSafe, E: UnwindSafe,

Blanket Implementations§

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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<E> Comparable for E
where E: Expression,

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

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

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

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

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

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

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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<E> Logical for E
where E: Expression<Output = bool>,

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fn and<R: Expression<Output = bool>>(self, rhs: R) -> AndExpr<Self, R>

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fn or<R: Expression<Output = bool>>(self, rhs: R) -> OrExpr<Self, R>

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fn not(self) -> NotExpr<Self>

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

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fn is_null(self) -> IsNullExpr<Self>

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fn is_not_null(self) -> IsNotNullExpr<Self>

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impl<E> StringOps for E
where E: Expression<Output = String>,

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fn like(self, pattern: &str) -> LikeExpr<Self>

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fn ilike(self, pattern: &str) -> ILikeExpr<Self>

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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.