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LengthExpr

clicktype_query::functions::string

Struct LengthExpr 

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pub struct LengthExpr<E: Expression<Output = String>>(pub E);
Expand description

length(s) - string length

Tuple Fields§

§0: E

Trait Implementations§

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impl<E: Expression<Output = String>> Expression for LengthExpr<E>

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type Output = u64

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<E> Freeze for LengthExpr<E>
where E: Freeze,

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impl<E> RefUnwindSafe for LengthExpr<E>
where E: RefUnwindSafe,

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impl<E> Send for LengthExpr<E>
where E: Send,

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impl<E> Sync for LengthExpr<E>
where E: Sync,

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impl<E> Unpin for LengthExpr<E>
where E: Unpin,

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impl<E> UnwindSafe for LengthExpr<E>
where 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> 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<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.