pub enum PrepareForCache {
Yes {
counter: u64,
},
No,
}
Available on crate feature
i-implement-a-third-party-backend-and-opt-into-breaking-changes
only.Expand description
A helper type that indicates if a certain query is cached inside of the prepared statement cache or not
This information can be used by the connection implementation to signal this fact to the database while actually preparing the statement
Variants§
Trait Implementations§
Source§impl Clone for PrepareForCache
impl Clone for PrepareForCache
Source§fn clone(&self) -> PrepareForCache
fn clone(&self) -> PrepareForCache
Returns a duplicate of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moreSource§impl Debug for PrepareForCache
impl Debug for PrepareForCache
impl Copy for PrepareForCache
Auto Trait Implementations§
impl Freeze for PrepareForCache
impl RefUnwindSafe for PrepareForCache
impl Send for PrepareForCache
impl Sync for PrepareForCache
impl Unpin for PrepareForCache
impl UnwindSafe for PrepareForCache
Blanket Implementations§
Source§impl<T> AggregateExpressionMethods for T
impl<T> AggregateExpressionMethods for T
Source§fn aggregate_distinct(self) -> AggregateDistinct<Self>where
Self: DistinctDsl,
fn aggregate_distinct(self) -> AggregateDistinct<Self>where
Self: DistinctDsl,
DISTINCT
modifier for aggregate functions Read moreSource§fn aggregate_all(self) -> AggregateAll<Self>where
Self: AllDsl,
fn aggregate_all(self) -> AggregateAll<Self>where
Self: AllDsl,
ALL
modifier for aggregate functions Read moreSource§fn aggregate_filter<P>(self, f: P) -> AggregateFilter<Self, P>
fn aggregate_filter<P>(self, f: P) -> AggregateFilter<Self, P>
Add an aggregate function filter Read more
Source§fn aggregate_order<O>(self, o: O) -> AggregateOrder<Self, O>where
Self: OrderAggregateDsl<O>,
fn aggregate_order<O>(self, o: O) -> AggregateOrder<Self, O>where
Self: OrderAggregateDsl<O>,
Add an aggregate function order Read more
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
Source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Converts
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(where Trait: Downcast
) to Box<dyn Any>
, which can then be
downcast
into Box<dyn ConcreteType>
where ConcreteType
implements Trait
.Source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
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
.Source§fn as_any(&self) -> &(dyn Any + 'static)
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.Source§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
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.Source§impl<T> DowncastSend for T
impl<T> DowncastSend for T
Source§impl<T> DowncastSync for T
impl<T> DowncastSync for T
Source§impl<T> IntoSql for T
impl<T> IntoSql for T
Source§impl<T> WindowExpressionMethods for T
impl<T> WindowExpressionMethods for T
Source§fn over(self) -> Over<Self>where
Self: OverDsl,
fn over(self) -> Over<Self>where
Self: OverDsl,
Turn a function call into a window function call Read more
Source§fn window_filter<P>(self, f: P) -> WindowFilter<Self, P>
fn window_filter<P>(self, f: P) -> WindowFilter<Self, P>
Add a filter to the current window function Read more
Source§fn partition_by<E>(self, expr: E) -> PartitionBy<Self, E>where
Self: PartitionByDsl<E>,
fn partition_by<E>(self, expr: E) -> PartitionBy<Self, E>where
Self: PartitionByDsl<E>,
Add a partition clause to the current window function Read more
Source§fn window_order<E>(self, expr: E) -> WindowOrder<Self, E>where
Self: OrderWindowDsl<E>,
fn window_order<E>(self, expr: E) -> WindowOrder<Self, E>where
Self: OrderWindowDsl<E>,
Add a order clause to the current window function Read more