Trait diesel::sql_types::Foldable

pub trait Foldable {
    type Sum;
    type Avg;
}

Represents SQL types which can be used with SUM and AVG

Associated Types

type Sum

The SQL type of sum(this_type)

type Avg

The SQL type of avg(this_type)

Implementors

impl Foldable for Unsigned<BigInt>

type Sum = Nullable<Numeric>

type Avg = Nullable<Numeric>

impl Foldable for Unsigned<Integer>

type Sum = Nullable<Unsigned<BigInt>>

type Avg = Nullable<Numeric>

impl Foldable for Unsigned<SmallInt>

type Sum = Nullable<Unsigned<BigInt>>

type Avg = Nullable<Numeric>

impl Foldable for BigInt

type Sum = Nullable<Numeric>

type Avg = Nullable<Numeric>

impl Foldable for Double

type Sum = Nullable<Double>

type Avg = Nullable<Double>

impl Foldable for Float

type Sum = Nullable<Float>

type Avg = Nullable<Double>

impl Foldable for Integer

type Sum = Nullable<BigInt>

type Avg = Nullable<Numeric>

impl Foldable for Interval

type Sum = Nullable<Interval>

type Avg = Nullable<Interval>

impl Foldable for Numeric

type Sum = Nullable<Numeric>

type Avg = Nullable<Numeric>

impl Foldable for SmallInt

type Sum = Nullable<BigInt>

type Avg = Nullable<Numeric>

impl<T> Foldable for Nullable<T> where
    T: Foldable + NotNull, 

type Sum = T::Sum

type Avg = T::Avg