Struct diesel::query_source::AliasedField

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pub struct AliasedField<S, F> { /* private fields */ }

Expand description

Represents an aliased field (column) within diesel’s query builder

See alias! for more details.

Trait Implementations

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impl<S: Clone, F: Clone> Clone for AliasedField<S, F>

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fn clone(&self) -> AliasedField<S, F>

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl<S: Debug, F: Debug> Debug for AliasedField<S, F>

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

Formats the value using the given formatter. Read more

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impl<S, C> Expression for AliasedField<S, C>where
S: AliasSource,
C: Column<Table = S::Target> + Expression,

type SqlType = <C as Expression>::SqlType

The type that this expression represents in SQL

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impl<S, C> QueryId for AliasedField<S, C>where
    S: AliasSource + 'static,
    S::Target: 'static,
    C: Column<Table = S::Target> + 'static + QueryId,

type QueryId = AliasedField<S, C>

A type which uniquely represents Self in a SQL query. Read more

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const HAS_STATIC_QUERY_ID: bool = <C as QueryId>::HAS_STATIC_QUERY_ID

Can the SQL generated by Self be uniquely identified by its type? Read more

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fn query_id() -> Option<TypeId>

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise. Read more

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impl<S, C> ValidGrouping<()> for AliasedField<S, C>where
S: AliasSource,
C: Column<Table = S::Target>,

type IsAggregate = No

Is this expression aggregate? Read more

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impl<S, C1, C2> ValidGrouping<AliasedField<S, C1>> for AliasedField<S, C2>where
    S: AliasSource,
    C1: Column<Table = S::Target>,
    C2: Column<Table = S::Target>,
    C2: ValidGrouping<C1, IsAggregate = Yes>,

type IsAggregate = Yes

Is this expression aggregate? Read more

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impl<QS, S, C> AppearsOnTable<QS> for AliasedField<S, C>where
    S: AliasSource,
    QS: AppearsInFromClause<Alias<S>, Count = Once>,
    C: Column<Table = S::Target>,

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impl<S: Copy, F: Copy> Copy for AliasedField<S, F>

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impl<S, C> SelectableExpression<Alias<S>> for AliasedField<S, C>where
    S: AliasSource,
    C: Column<Table = S::Target>,
    Self: AppearsOnTable<Alias<S>>,

Auto Trait Implementations

impl<S, F> RefUnwindSafe for AliasedField<S, F>where
F: RefUnwindSafe,
S: RefUnwindSafe,

impl<S, F> Send for AliasedField<S, F>where
F: Send,
S: Send,

impl<S, F> Sync for AliasedField<S, F>where
F: Sync,
S: Sync,

impl<S, F> Unpin for AliasedField<S, F>where
F: Unpin,
S: Unpin,

impl<S, F> UnwindSafe for AliasedField<S, F>where
F: UnwindSafe,
S: UnwindSafe,

Blanket Implementations

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impl<T> Any for Twhere
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, ST> AsExpression<ST> for Twhere
T: Expression<SqlType = ST>,
ST: SqlType + TypedExpressionType,

type Expression = T

The expression being returned

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fn as_expression(self) -> T

Perform the conversion

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<Conn, DB, T> ExecuteDsl<Conn, DB> for Twhere
    Conn: Connection<Backend = DB>,
    DB: Backend,
    T: QueryFragment<DB, NotSpecialized> + QueryId,

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fn execute(query: T, conn: &mut Conn) -> Result<usize, Error>

Execute this command

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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) -> AsExprOf<Self, T>where
Self: AsExpression<T> + Sized,
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) -> AsExprOf<&'a Self, T>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> ToOwned for Twhere
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

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

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Struct diesel::query_source::AliasedField

Trait Implementations

impl<S: Clone, F: Clone> Clone for AliasedField<S, F>

fn clone(&self) -> AliasedField<S, F>

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

impl<S: Debug, F: Debug> Debug for AliasedField<S, F>

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

impl<S, C> Expression for AliasedField<S, C>where S: AliasSource, C: Column<Table = S::Target> + Expression,

type SqlType = <C as Expression>::SqlType

impl<S, C> QueryId for AliasedField<S, C>where S: AliasSource + 'static, S::Target: 'static, C: Column<Table = S::Target> + 'static + QueryId,

type QueryId = AliasedField<S, C>

const HAS_STATIC_QUERY_ID: bool = <C as QueryId>::HAS_STATIC_QUERY_ID

fn query_id() -> Option<TypeId>

impl<S, C> ValidGrouping<()> for AliasedField<S, C>where S: AliasSource, C: Column<Table = S::Target>,

type IsAggregate = No

impl<S, C1, C2> ValidGrouping<AliasedField<S, C1>> for AliasedField<S, C2>where S: AliasSource, C1: Column<Table = S::Target>, C2: Column<Table = S::Target>, C2: ValidGrouping<C1, IsAggregate = Yes>,

type IsAggregate = Yes

impl<QS, S, C> AppearsOnTable<QS> for AliasedField<S, C>where S: AliasSource, QS: AppearsInFromClause<Alias<S>, Count = Once>, C: Column<Table = S::Target>,

impl<S: Copy, F: Copy> Copy for AliasedField<S, F>

impl<S, C> SelectableExpression<Alias<S>> for AliasedField<S, C>where S: AliasSource, C: Column<Table = S::Target>, Self: AppearsOnTable<Alias<S>>,

Auto Trait Implementations

impl<S, F> RefUnwindSafe for AliasedField<S, F>where F: RefUnwindSafe, S: RefUnwindSafe,

impl<S, F> Send for AliasedField<S, F>where F: Send, S: Send,

impl<S, F> Sync for AliasedField<S, F>where F: Sync, S: Sync,

impl<S, F> Unpin for AliasedField<S, F>where F: Unpin, S: Unpin,

impl<S, F> UnwindSafe for AliasedField<S, F>where F: UnwindSafe, S: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T, ST> AsExpression<ST> for Twhere T: Expression<SqlType = ST>, ST: SqlType + TypedExpressionType,

type Expression = T

fn as_expression(self) -> T

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<Conn, DB, T> ExecuteDsl<Conn, DB> for Twhere Conn: Connection<Backend = DB>, DB: Backend, T: QueryFragment<DB, NotSpecialized> + QueryId,

fn execute(query: T, conn: &mut Conn) -> Result<usize, Error>

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> IntoSql for T

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

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

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut 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<S, C> Expression for AliasedField<S, C>where
S: AliasSource,
C: Column<Table = S::Target> + Expression,

impl<S, C> QueryId for AliasedField<S, C>where
S: AliasSource + 'static,
S::Target: 'static,
C: Column<Table = S::Target> + 'static + QueryId,

impl<S, C> ValidGrouping<()> for AliasedField<S, C>where
S: AliasSource,
C: Column<Table = S::Target>,

impl<S, C1, C2> ValidGrouping<AliasedField<S, C1>> for AliasedField<S, C2>where
S: AliasSource,
C1: Column<Table = S::Target>,
C2: Column<Table = S::Target>,
C2: ValidGrouping<C1, IsAggregate = Yes>,

impl<QS, S, C> AppearsOnTable<QS> for AliasedField<S, C>where
S: AliasSource,
QS: AppearsInFromClause<Alias<S>, Count = Once>,
C: Column<Table = S::Target>,

impl<S, C> SelectableExpression<Alias<S>> for AliasedField<S, C>where
S: AliasSource,
C: Column<Table = S::Target>,
Self: AppearsOnTable<Alias<S>>,

impl<S, F> RefUnwindSafe for AliasedField<S, F>where
F: RefUnwindSafe,
S: RefUnwindSafe,

impl<S, F> Send for AliasedField<S, F>where
F: Send,
S: Send,

impl<S, F> Sync for AliasedField<S, F>where
F: Sync,
S: Sync,

impl<S, F> Unpin for AliasedField<S, F>where
F: Unpin,
S: Unpin,

impl<S, F> UnwindSafe for AliasedField<S, F>where
F: UnwindSafe,
S: UnwindSafe,

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

impl<T, ST> AsExpression<ST> for Twhere
T: Expression<SqlType = ST>,
ST: SqlType + TypedExpressionType,

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

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

impl<Conn, DB, T> ExecuteDsl<Conn, DB> for Twhere
Conn: Connection<Backend = DB>,
DB: Backend,
T: QueryFragment<DB, NotSpecialized> + QueryId,

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

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

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

impl<T> ToOwned for Twhere
T: Clone,

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

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