Struct tidb_query_aggr::impl_count::AggrFnStateCount [−][src]
The state of the COUNT aggregate function.
Fields
count: usize
Implementations
impl AggrFnStateCount
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pub fn new() -> Self
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fn update<'a, TT>(
&mut self,
_ctx: &mut EvalContext,
value: Option<TT>
) -> Result<()> where
TT: EvaluableRef<'a>,
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&mut self,
_ctx: &mut EvalContext,
value: Option<TT>
) -> Result<()> where
TT: EvaluableRef<'a>,
fn update_repeat<'a, TT>(
&mut self,
_ctx: &mut EvalContext,
value: Option<TT>,
repeat_times: usize
) -> Result<()> where
TT: EvaluableRef<'a>,
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&mut self,
_ctx: &mut EvalContext,
value: Option<TT>,
repeat_times: usize
) -> Result<()> where
TT: EvaluableRef<'a>,
fn update_vector<'a, TT, CC>(
&mut self,
_ctx: &mut EvalContext,
_phantom_data: Option<TT>,
physical_values: CC,
logical_rows: &[usize]
) -> Result<()> where
TT: EvaluableRef<'a>,
CC: ChunkRef<'a, TT>,
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&mut self,
_ctx: &mut EvalContext,
_phantom_data: Option<TT>,
physical_values: CC,
logical_rows: &[usize]
) -> Result<()> where
TT: EvaluableRef<'a>,
CC: ChunkRef<'a, TT>,
Trait Implementations
impl AggrFunctionState for AggrFnStateCount
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fn push_result(
&self,
_ctx: &mut EvalContext,
target: &mut [VectorValue]
) -> Result<()>
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&self,
_ctx: &mut EvalContext,
target: &mut [VectorValue]
) -> Result<()>
impl<T> AggrFunctionStateUpdatePartial<T> for AggrFnStateCount where
T: EvaluableRef<'static> + 'static,
VectorValue: VectorValueExt<T::EvaluableType>,
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T: EvaluableRef<'static> + 'static,
VectorValue: VectorValueExt<T::EvaluableType>,
unsafe fn update_unsafe(
&mut self,
ctx: &mut EvalContext,
value: Option<T>
) -> Result<()>
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&mut self,
ctx: &mut EvalContext,
value: Option<T>
) -> Result<()>
unsafe fn update_repeat_unsafe(
&mut self,
ctx: &mut EvalContext,
value: Option<T>,
repeat_times: usize
) -> Result<()>
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&mut self,
ctx: &mut EvalContext,
value: Option<T>,
repeat_times: usize
) -> Result<()>
unsafe fn update_vector_unsafe(
&mut self,
ctx: &mut EvalContext,
phantom_data: Option<T>,
physical_values: T::ChunkedType,
logical_rows: &[usize]
) -> Result<()>
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&mut self,
ctx: &mut EvalContext,
phantom_data: Option<T>,
physical_values: T::ChunkedType,
logical_rows: &[usize]
) -> Result<()>
impl Debug for AggrFnStateCount
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Auto Trait Implementations
impl RefUnwindSafe for AggrFnStateCount
impl Send for AggrFnStateCount
impl Sync for AggrFnStateCount
impl Unpin for AggrFnStateCount
impl UnwindSafe for AggrFnStateCount
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<V, W> ConvertFrom<W> for V where
W: ConvertTo<V>,
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W: ConvertTo<V>,
pub fn convert_from(ctx: &mut EvalContext, from: W) -> Result<V, Error>
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impl<T> From<T> for T
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Pointable for T
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pub const ALIGN: usize
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type Init = T
The type for initializers.
pub unsafe fn init(init: <T as Pointable>::Init) -> usize
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pub unsafe fn deref<'a>(ptr: usize) -> &'a T
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pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T
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pub unsafe fn drop(ptr: usize)
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impl<T> Same<T> for T
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type Output = T
Should always be Self
impl<T> Sealed<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> SendSyncUnwindSafe for T where
T: Send + Sync + UnwindSafe + ?Sized,
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T: Send + Sync + UnwindSafe + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
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V: MultiLane<T>,