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[−][src]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)

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Implementors

impl Foldable for Unsigned<BigInt>
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type Sum = Nullable<Numeric>

type Avg = Nullable<Numeric>

impl Foldable for Unsigned<Integer>
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type Sum = Nullable<Unsigned<BigInt>>

type Avg = Nullable<Numeric>

impl Foldable for Unsigned<SmallInt>
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type Sum = Nullable<Unsigned<BigInt>>

type Avg = Nullable<Numeric>

impl Foldable for BigInt
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type Sum = Nullable<Numeric>

type Avg = Nullable<Numeric>

impl Foldable for Double
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type Sum = Nullable<Double>

type Avg = Nullable<Double>

impl Foldable for Float
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type Sum = Nullable<Float>

type Avg = Nullable<Double>

impl Foldable for Integer
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type Sum = Nullable<BigInt>

type Avg = Nullable<Numeric>

impl Foldable for Interval
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type Sum = Nullable<Interval>

type Avg = Nullable<Interval>

impl Foldable for Numeric
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type Sum = Nullable<Numeric>

type Avg = Nullable<Numeric>

impl Foldable for SmallInt
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type Sum = Nullable<BigInt>

type Avg = Nullable<Numeric>

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

type Avg = T::Avg

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