Enum AggregateCall 

pub enum AggregateCall<F> {
    CountStar,
    Count {
        expr: Box<ScalarExpr<F>>,
        distinct: bool,
    },
    Sum {
        expr: Box<ScalarExpr<F>>,
        distinct: bool,
    },
    Total {
        expr: Box<ScalarExpr<F>>,
        distinct: bool,
    },
    Avg {
        expr: Box<ScalarExpr<F>>,
        distinct: bool,
    },
    Min(Box<ScalarExpr<F>>),
    Max(Box<ScalarExpr<F>>),
    CountNulls(Box<ScalarExpr<F>>),
    GroupConcat {
        expr: Box<ScalarExpr<F>>,
        distinct: bool,
        separator: Option<String>,
    },
}

Aggregate function call within a scalar expression.

Each variant (except CountStar) operates on an expression rather than just a column. This allows aggregates like AVG(col1 + col2) or SUM(-col1) to work correctly.

Variants

CountStar

Count

Fields

expr: Box<ScalarExpr<F>>

distinct: bool

Sum

Fields

expr: Box<ScalarExpr<F>>

distinct: bool

Total

Fields

expr: Box<ScalarExpr<F>>

distinct: bool

Avg

Fields

expr: Box<ScalarExpr<F>>

distinct: bool

Min(Box<ScalarExpr<F>>)

Max(Box<ScalarExpr<F>>)

CountNulls(Box<ScalarExpr<F>>)

GroupConcat

Fields

expr: Box<ScalarExpr<F>>

distinct: bool

separator: Option<String>

Trait Implementations

impl<F> Clone for AggregateCall<F>

where F: Clone,

fn clone(&self) -> AggregateCall<F>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<F> Debug for AggregateCall<F>

where F: Debug,

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

Formats the value using the given formatter.