datafusion_expr

Enum ReversedUDWF

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pub enum ReversedUDWF {
    Identical,
    NotSupported,
    Reversed(Arc<WindowUDF>),
}

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Identical

The result of evaluating the user-defined window function remains identical when reversed.

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NotSupported

A window function which does not support evaluating the result in reverse order.

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Reversed(Arc<WindowUDF>)

Customize the user-defined window function for evaluating the result in reverse order.

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impl<T> Any for T
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fn type_id(&self) -> TypeId

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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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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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type Error = Infallible

The type returned in the event of a conversion error.
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Performs the conversion.
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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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

Performs the conversion.