ModeFunction

sql_cli::sql::functions::statistics

Struct ModeFunction

pub struct ModeFunction;

Expand description

MODE() - Returns the most frequent value (placeholder)

Trait Implementations§

impl SqlFunction for ModeFunction

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 ModeFunction

impl RefUnwindSafe for ModeFunction

impl Send for ModeFunction

impl Sync for ModeFunction

impl Unpin for ModeFunction

impl UnwindSafe for ModeFunction

Blanket Implementations§

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

fn type_id(&self) -> TypeId

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where T: ?Sized,

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Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

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

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

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where F: FnOnce(&Self) -> bool,

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where U: Into<T>,

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

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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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

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