Struct Aggregation 

pub struct Aggregation {
    pub op: String,
    pub expr: Expr,
    pub param: Option<Expr>,
    pub grouping: Option<Grouping>,
}

Aggregation expression

Fields

op: String

The aggregation operator name

expr: Expr

The expression to aggregate

param: Option<Expr>

Parameter for parametric aggregations (topk, quantile, etc.)

grouping: Option<Grouping>

Optional grouping clause (by/without)

Implementations

impl Aggregation

pub fn new(op: impl Into<String>, expr: Expr) -> Self

Create a new aggregation

pub fn with_param(op: impl Into<String>, param: Expr, expr: Expr) -> Self

Create a new aggregation with a parameter

pub fn with_grouping(self, grouping: Grouping) -> Self

Set the grouping clause

Trait Implementations

impl Clone for Aggregation

fn clone(&self) -> Aggregation

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Aggregation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Aggregation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Aggregation

fn eq(&self, other: &Aggregation) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Aggregation