diesel::sql_types

Struct Array

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pub struct Array<ST: 'static>(/* private fields */);
Available on crate feature postgres_backend only.
Expand description

The Array SQL type.

This wraps another type to represent a SQL array of that type. Multidimensional arrays are not supported.

§ToSql impls

  • Vec<T> for any T which implements ToSql<ST>
  • &[T] for any T which implements ToSql<ST>

§FromSql impls

  • Vec<T> for any T which implements ToSql<ST>

Trait Implementations§

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impl<'a, 'b, ST: 'static, T> AsExpression<Array<ST>> for &'a &'b [T]

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type Expression = Bound<Array<ST>, &'a &'b [T]>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'a, 'b, ST: 'static, T> AsExpression<Array<ST>> for &'a &'b Vec<T>

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type Expression = Bound<Array<ST>, &'a &'b Vec<T>>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'a, 'b, ST: 'static, T> AsExpression<Array<ST>> for &'a [T]

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type Expression = Bound<Array<ST>, &'a [T]>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'a, 'b, ST: 'static, T> AsExpression<Array<ST>> for &'a Vec<T>

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type Expression = Bound<Array<ST>, &'a Vec<T>>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'a, 'b, ST: 'static, T> AsExpression<Array<ST>> for Vec<T>

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type Expression = Bound<Array<ST>, Vec<T>>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<ST: Clone + 'static> Clone for Array<ST>

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fn clone(&self) -> Array<ST>

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<ST: Debug + 'static> Debug for Array<ST>

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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<ST: Default + 'static> Default for Array<ST>

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fn default() -> Array<ST>

Returns the “default value” for a type. Read more
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impl<T, ST> FromSql<Array<ST>, Pg> for Vec<T>
where T: FromSql<ST, Pg>,

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fn from_sql(value: PgValue<'_>) -> Result<Self>

See the trait documentation.
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fn from_nullable_sql(bytes: Option<DB::RawValue<'_>>) -> Result<Self>

A specialized variant of from_sql for handling null values. Read more
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impl<T> HasSqlType<Array<T>> for Pg
where Pg: HasSqlType<T>,

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fn metadata(lookup: &mut Self::MetadataLookup) -> PgTypeMetadata

Fetch the metadata for the given type Read more
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impl<ST: 'static + QueryId> QueryId for Array<ST>

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const HAS_STATIC_QUERY_ID: bool = _

Can the SQL generated by Self be uniquely identified by its type? Read more
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type QueryId = Array<<ST as QueryId>::QueryId>

A type which uniquely represents Self in a SQL query. 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<ST: 'static> SqlType for Array<ST>

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type IsNull = NotNull

Is this type nullable? Read more
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impl<ST, T> ToSql<Array<ST>, Pg> for [T]
where Pg: HasSqlType<ST>, T: ToSql<ST, Pg>,

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fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Pg>) -> Result

See the trait documentation.
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impl<ST, T> ToSql<Array<ST>, Pg> for Vec<T>
where ST: 'static, [T]: ToSql<Array<ST>, Pg>, T: Debug,

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fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Pg>) -> Result

See the trait documentation.
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impl<ST: Copy + 'static> Copy for Array<ST>

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impl<ST: 'static> SingleValue for Array<ST>

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impl<T: SqlOrd> SqlOrd for Array<T>

Auto Trait Implementations§

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impl<ST> Freeze for Array<ST>
where ST: Freeze,

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impl<ST> RefUnwindSafe for Array<ST>
where ST: RefUnwindSafe,

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impl<ST> Send for Array<ST>
where ST: Send,

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impl<ST> Sync for Array<ST>
where ST: Sync,

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impl<ST> Unpin for Array<ST>
where ST: Unpin,

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impl<ST> UnwindSafe for Array<ST>
where ST: UnwindSafe,

Blanket Implementations§

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<ST, U, DB> CompatibleType<U, DB> for ST
where DB: Backend, ST: SqlType + SingleValue, U: FromSqlRow<ST, DB>,

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type SqlType = ST

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
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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>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &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)

Convert &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> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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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, U> Into<U> 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> IntoNotNullable for T
where T: SqlType<IsNull = NotNull>,

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type NotNullable = T

The not nullable representation of this type. Read more
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impl<T> IntoNullable for T
where T: SqlType<IsNull = NotNull> + SingleValue,

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type Nullable = Nullable<T>

The nullable representation of this type. Read more
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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 T
where T: Clone,

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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 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<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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

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impl<T> MaybeSendSync for T

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impl<ST> TypedExpressionType for ST
where ST: SingleValue,