SkewFunction

sql_cli::sql::functions::statistics

Struct SkewFunction

pub struct SkewFunction;

Expand description

SKEW() - Calculate skewness of a single value from mean

Trait Implementations§

impl SqlFunction for SkewFunction

fn signature(&self) -> FunctionSignature

Get the function’s signature and metadata

fn evaluate(&self, args: &[DataValue]) -> Result<DataValue>

Evaluate the function with the given arguments

fn validate_args(&self, args: &[DataValue]) -> Result<()>

Validate arguments before evaluation (default implementation checks count)

Auto Trait Implementations§

impl Freeze for SkewFunction

impl RefUnwindSafe for SkewFunction

impl Send for SkewFunction

impl Sync for SkewFunction

impl Unpin for SkewFunction

impl UnwindSafe for SkewFunction

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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where T: ?Sized,

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Returns the argument unchanged.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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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 Output = T

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Performs the conversion.

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

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

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

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impl<V, T> VZip<V> for T
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