Function diesel::dsl::sum[−][src]

pub fn sum<ST: Foldable, expr>(
    expr: expr
) -> sum<ST, <expr as AsExpression<ST>>::Expression> where
    expr: AsExpression<ST>,

Expand description

Represents a SQL SUM function. This function can only take types which are Foldable.

Examples

assert_eq!(Ok(Some(12i64)), animals.select(sum(legs)).first(&connection));