AvgFunction

sql_cli::sql::aggregates::functions

Struct AvgFunction

pub struct AvgFunction;

Expand description

AVG(column) - averages numeric values

Trait Implementations§

impl AggregateFunction for AvgFunction

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 AvgFunction

impl RefUnwindSafe for AvgFunction

impl Send for AvgFunction

impl Sync for AvgFunction

impl Unpin for AvgFunction

impl UnwindSafe for AvgFunction

Blanket Implementations§

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

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where U: TryFrom<T>,

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