Enum MultiField

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pub enum MultiField<'conn: 'query, 'query> {
    Postgresql(<<PgConnection as LoadConnection>::Row<'conn, 'query> as Row<'conn, <PgConnection as Connection>::Backend>>::Field<'query>),
    Sqlite(<<SqliteConnection as LoadConnection>::Row<'conn, 'query> as Row<'conn, <SqliteConnection as Connection>::Backend>>::Field<'query>),
}

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Postgresql(<<PgConnection as LoadConnection>::Row<'conn, 'query> as Row<'conn, <PgConnection as Connection>::Backend>>::Field<'query>)

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Sqlite(<<SqliteConnection as LoadConnection>::Row<'conn, 'query> as Row<'conn, <SqliteConnection as Connection>::Backend>>::Field<'query>)

Trait Implementations§

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impl<'conn, 'query> Field<'conn, MultiBackend> for MultiField<'conn, 'query>

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fn field_name(&self) -> Option<&str>

The name of the current field Read more

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fn value(&self) -> Option<<MultiBackend as Backend>::RawValue<'_>>

Get the value representing the current field in the raw representation as it is transmitted by the database

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fn is_null(&self) -> bool

Checks whether this field is null or not.

Auto Trait Implementations§

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impl<'conn, 'query> !UnwindSafe for MultiField<'conn, 'query>

Blanket Implementations§

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impl<T> AggregateExpressionMethods for T

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fn aggregate_distinct(self) -> Self::Output
where Self: DistinctDsl,

DISTINCT modifier for aggregate functions Read more

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fn aggregate_all(self) -> Self::Output
where Self: AllDsl,

ALL modifier for aggregate functions Read more

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fn aggregate_filter(self, f: P) -> Self::Output
where P: AsExpression<Bool>, Self: FilterDsl<>::Expression>,

Add an aggregate function filter Read more

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fn aggregate_order<O>(self, o: O) -> Self::Output
where Self: OrderAggregateDsl<O>,

Add an aggregate function order Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Converts Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.

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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Converts Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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fn as_any(&self) -> &(dyn Any + 'static)

Converts &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.

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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Converts &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoSql for T

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fn into_sql<T>(self) -> Self::Expression
where Self: Sized + AsExpression<T>, T: SqlType + TypedExpressionType,

Convert self to an expression for Diesel’s query builder. Read more

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fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression
where &'a Self: AsExpression<T>, T: SqlType + TypedExpressionType,

Convert &self to an expression for Diesel’s query builder. Read more

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impl<T> Same for T

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type Output = T

Should always be Self

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impl<T, U> TryFrom for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.

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fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T
where U: TryFrom<T>,

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type Error = >::Error

The type returned in the event of a conversion error.

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fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<T> WindowExpressionMethods for T

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fn over(self) -> Self::Output
where Self: OverDsl,

Turn a function call into a window function call Read more

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fn window_filter(self, f: P) -> Self::Output
where P: AsExpression<Bool>, Self: FilterDsl<>::Expression>,

Add a filter to the current window function Read more

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fn partition_by<E>(self, expr: E) -> Self::Output
where Self: PartitionByDsl<E>,

Add a partition clause to the current window function Read more

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fn window_order<E>(self, expr: E) -> Self::Output
where Self: OrderWindowDsl<E>,

Add a order clause to the current window function Read more

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fn frame_by<E>(self, expr: E) -> Self::Output
where Self: FrameDsl<E>,

Add a frame clause to the current window function Read more

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more

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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more

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Enum MultiFieldCopy item path

Variants§

Postgresql(<<PgConnection as LoadConnection>::Row<'conn, 'query> as Row<'conn, <PgConnection as Connection>::Backend>>::Field<'query>)

Sqlite(<<SqliteConnection as LoadConnection>::Row<'conn, 'query> as Row<'conn, <SqliteConnection as Connection>::Backend>>::Field<'query>)

Trait Implementations§

impl<'conn, 'query> Field<'conn, MultiBackend> for MultiField<'conn, 'query>

fn field_name(&self) -> Option<&str>

fn value(&self) -> Option<<MultiBackend as Backend>::RawValue<'_>>

fn is_null(&self) -> bool

Auto Trait Implementations§

impl<'conn, 'query> Freeze for MultiField<'conn, 'query>where 'conn: 'query,

impl<'conn, 'query> !RefUnwindSafe for MultiField<'conn, 'query>

impl<'conn, 'query> !Send for MultiField<'conn, 'query>

impl<'conn, 'query> !Sync for MultiField<'conn, 'query>

impl<'conn, 'query> Unpin for MultiField<'conn, 'query>where 'conn: 'query,

impl<'conn, 'query> !UnwindSafe for MultiField<'conn, 'query>

Blanket Implementations§

impl<T> AggregateExpressionMethods for T

fn aggregate_distinct(self) -> Self::Outputwhere Self: DistinctDsl,

fn aggregate_all(self) -> Self::Outputwhere Self: AllDsl,

fn aggregate_filter<P>(self, f: P) -> Self::Outputwhere P: AsExpression<Bool>, Self: FilterDsl<<P as AsExpression<Bool>>::Expression>,

fn aggregate_order<O>(self, o: O) -> Self::Outputwhere Self: OrderAggregateDsl<O>,

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> Downcast for Twhere T: Any,

fn into_any(self: Box<T>) -> Box<dyn Any>

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

fn as_any(&self) -> &(dyn Any + 'static)

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> IntoSql for T

fn into_sql<T>(self) -> Self::Expressionwhere Self: Sized + AsExpression<T>, T: SqlType + TypedExpressionType,

fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expressionwhere &'a Self: AsExpression<T>, T: SqlType + TypedExpressionType,

impl<T> Same for T

type Output = T

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> WindowExpressionMethods for T

fn over(self) -> Self::Outputwhere Self: OverDsl,

fn window_filter<P>(self, f: P) -> Self::Outputwhere P: AsExpression<Bool>, Self: FilterDsl<<P as AsExpression<Bool>>::Expression>,

fn partition_by<E>(self, expr: E) -> Self::Outputwhere Self: PartitionByDsl<E>,

fn window_order<E>(self, expr: E) -> Self::Outputwhere Self: OrderWindowDsl<E>,

fn frame_by<E>(self, expr: E) -> Self::Outputwhere Self: FrameDsl<E>,

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>

impl<T> ErasedDestructor for Twhere T: 'static,

Enum MultiField

impl<'conn, 'query> Freeze for MultiField<'conn, 'query>
where 'conn: 'query,

impl<'conn, 'query> Unpin for MultiField<'conn, 'query>
where 'conn: 'query,

fn aggregate_distinct(self) -> Self::Output
where Self: DistinctDsl,

fn aggregate_all(self) -> Self::Output
where Self: AllDsl,

fn aggregate_filter<P>(self, f: P) -> Self::Output
where P: AsExpression<Bool>, Self: FilterDsl<<P as AsExpression<Bool>>::Expression>,

fn aggregate_order<O>(self, o: O) -> Self::Output
where Self: OrderAggregateDsl<O>,

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> Downcast for T
where T: Any,

impl<T, U> Into<U> for T
where U: From<T>,

fn into_sql<T>(self) -> Self::Expression
where Self: Sized + AsExpression<T>, T: SqlType + TypedExpressionType,

fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression
where &'a Self: AsExpression<T>, T: SqlType + TypedExpressionType,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

fn over(self) -> Self::Output
where Self: OverDsl,

fn window_filter<P>(self, f: P) -> Self::Output
where P: AsExpression<Bool>, Self: FilterDsl<<P as AsExpression<Bool>>::Expression>,

fn partition_by<E>(self, expr: E) -> Self::Output
where Self: PartitionByDsl<E>,

fn window_order<E>(self, expr: E) -> Self::Output
where Self: OrderWindowDsl<E>,

fn frame_by<E>(self, expr: E) -> Self::Output
where Self: FrameDsl<E>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

impl<T> ErasedDestructor for T
where T: 'static,