MaxFunction

sql_cli::sql::aggregates::functions

Struct MaxFunction

pub struct MaxFunction;

Expand description

MAX(column) - finds maximum value

Trait Implementations§

impl AggregateFunction for MaxFunction

fn name(&self) -> &'static str

Name of the function (e.g., “SUM”, “AVG”)

fn init(&self) -> AggregateState

Initialize the aggregation state

fn accumulate( &self, state: &mut AggregateState, value: &DataValue, ) -> Result<()>

Add a value to the aggregation

fn finalize(&self, state: AggregateState) -> DataValue

Finalize and return the result

fn requires_numeric(&self) -> bool

Check if this function requires numeric input

Auto Trait Implementations§

impl Freeze for MaxFunction

impl RefUnwindSafe for MaxFunction

impl Send for MaxFunction

impl Sync for MaxFunction

impl Unpin for MaxFunction

impl UnwindSafe for MaxFunction

Blanket Implementations§

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

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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

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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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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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