Struct tidb_query_aggr::impl_variance::AggrFnStateVarianceForEnum[−][src]

pub struct AggrFnStateVarianceForEnum<V> where
    V: VarianceType,
    VectorValue: VectorValueExt<Decimal>,  {
    count: usize,
    sum: Decimal,
    variance: Decimal,
    _phantom: PhantomData<V>,
}

The state of the VARIANCE aggregate function.

Fields

count: usizesum: Decimalvariance: Decimal_phantom: PhantomData<V>

Implementations

`impl<V> AggrFnStateVarianceForEnum<V> where V: VarianceType, VectorValue: VectorValueExt<Decimal>,` [src]

`pub fn new() -> Self`[src]

`fn update_concrete( &mut self, ctx: &mut EvalContext, value: Option<EnumRef<'_>> ) -> Result<()>`[src]

Notes

Functions such as SUM() or AVG() or VARIANCE() that expect a numeric argument cast the argument to a number if necessary. For ENUM values, the index number is used in the calculation.

ref: https://dev.mysql.com/doc/refman/8.0/en/enum.html

Trait Implementations

`impl<V> ConcreteAggrFunctionState for AggrFnStateVarianceForEnum<V> where V: VarianceType, VectorValue: VectorValueExt<Decimal>,` [src]

`type ParameterType = EnumRef<'static>`

`unsafe fn update_concrete_unsafe( &mut self, ctx: &mut EvalContext, value: Option<Self::ParameterType> ) -> Result<()>`[src]

`fn push_result( &self, _ctx: &mut EvalContext, target: &mut [VectorValue] ) -> Result<()>`[src]

`impl<V: Debug> Debug for AggrFnStateVarianceForEnum<V> where V: VarianceType, VectorValue: VectorValueExt<Decimal>,` [src]

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

Auto Trait Implementations

`impl<V> RefUnwindSafe for AggrFnStateVarianceForEnum<V> where V: RefUnwindSafe,`

`impl<V> Send for AggrFnStateVarianceForEnum<V>`

`impl<V> Sync for AggrFnStateVarianceForEnum<V>`

`impl<V> Unpin for AggrFnStateVarianceForEnum<V> where V: Unpin,`

`impl<V> UnwindSafe for AggrFnStateVarianceForEnum<V> where V: UnwindSafe,`

Blanket Implementations

`impl<F> AggrFunctionState for F where F: ConcreteAggrFunctionState,` [src]

`pub fn push_result( &Self, &mut EvalContext, &mut [VectorValue] ) -> Result<(), Error>`[src]

`impl<T, State> AggrFunctionStateUpdatePartial<T> for State where T: EvaluableRef<'static>, State: ConcreteAggrFunctionState,` [src]

`pub unsafe default fn update_unsafe( &mut Self, &mut EvalContext, Option<T> ) -> Result<(), Error>`[src]

`pub unsafe default fn update_repeat_unsafe( &mut Self, &mut EvalContext, Option<T>, usize ) -> Result<(), Error>`[src]

`pub unsafe default fn update_vector_unsafe( &mut Self, &mut EvalContext, Option<T>, <T as EvaluableRef<'static>>::ChunkedType, &[usize] ) -> Result<(), Error>`[src]

`impl<T, State> AggrFunctionStateUpdatePartial<T> for State where T: EvaluableRef<'static>, State: ConcreteAggrFunctionState<ParameterType = T>,` [src]

`pub unsafe fn update_unsafe( &mut Self, &mut EvalContext, Option<T> ) -> Result<(), Error>`[src]

`pub unsafe fn update_repeat_unsafe( &mut Self, &mut EvalContext, Option<T>, usize ) -> Result<(), Error>`[src]

`pub unsafe fn update_vector_unsafe( &mut Self, &mut EvalContext, Option<T>, <T as EvaluableRef<'static>>::ChunkedType, &[usize] ) -> Result<(), Error>`[src]

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`pub fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`pub fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`pub fn borrow_mut(&mut self) -> &mut T`[src]

`impl<V, W> ConvertFrom<W> for V where W: ConvertTo<V>,` [src]

`pub fn convert_from(ctx: &mut EvalContext, from: W) -> Result<V, Error>`[src]

`impl<T> From<T> for T`[src]

`pub fn from(t: T) -> T`[src]

`impl<T> Instrument for T`[src]

`pub fn instrument(self, span: Span) -> Instrumented<Self>`[src]

`pub fn in_current_span(self) -> Instrumented<Self>`[src]

`impl<T, U> Into for T where U: From<T>,` [src]

`pub fn into(self) -> U`[src]

`impl<T> Pointable for T`[src]

`pub const ALIGN: usize`[src]

`type Init = T`

The type for initializers.

`pub unsafe fn init(init: <T as Pointable>::Init) -> usize`[src]

`pub unsafe fn deref<'a>(ptr: usize) -> &'a T`[src]

`pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T`[src]

`pub unsafe fn drop(ptr: usize)`[src]

`impl<T> Same<T> for T`[src]

`type Output = T`

Should always be Self

`impl<T> Sealed<T> for T where T: ?Sized,` [src]

`impl<T> SendSyncUnwindSafe for T where T: Send + Sync + UnwindSafe + ?Sized,` [src]

`impl<T, U> TryFrom for T where U: Into<T>,` [src]

`type Error = Infallible`

The type returned in the event of a conversion error.

`pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>`[src]

`impl<T, U> TryInto for T where U: TryFrom<T>,` [src]

`type Error = >::Error`

The type returned in the event of a conversion error.

`pub fn try_into(self) -> Result<U, >::Error>`[src]

`impl<V, T> VZip<V> for T where V: MultiLane<T>,` [src]

`pub fn vzip(self) -> V`[src]

Struct tidb_query_aggr::impl_variance::AggrFnStateVarianceForEnum⎘[−][src]

Fields

Implementations

impl<V> AggrFnStateVarianceForEnum<V> where V: VarianceType, VectorValue: VectorValueExt<Decimal>, [src]

pub fn new() -> Self[src]

fn update_concrete( &mut self, ctx: &mut EvalContext, value: Option<EnumRef<'_>>) -> Result<()>[src]

Notes

Trait Implementations

impl<V> ConcreteAggrFunctionState for AggrFnStateVarianceForEnum<V> where V: VarianceType, VectorValue: VectorValueExt<Decimal>, [src]

type ParameterType = EnumRef<'static>

unsafe fn update_concrete_unsafe( &mut self, ctx: &mut EvalContext, value: Option<Self::ParameterType>) -> Result<()>[src]

fn push_result( &self, _ctx: &mut EvalContext, target: &mut [VectorValue]) -> Result<()>[src]

impl<V: Debug> Debug for AggrFnStateVarianceForEnum<V> where V: VarianceType, VectorValue: VectorValueExt<Decimal>, [src]

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

Auto Trait Implementations

impl<V> RefUnwindSafe for AggrFnStateVarianceForEnum<V> where V: RefUnwindSafe,

impl<V> Send for AggrFnStateVarianceForEnum<V>

impl<V> Sync for AggrFnStateVarianceForEnum<V>

impl<V> Unpin for AggrFnStateVarianceForEnum<V> where V: Unpin,

impl<V> UnwindSafe for AggrFnStateVarianceForEnum<V> where V: UnwindSafe,

Blanket Implementations

impl<F> AggrFunctionState for F where F: ConcreteAggrFunctionState, [src]

pub fn push_result( &Self, &mut EvalContext, &mut [VectorValue]) -> Result<(), Error>[src]

impl<T, State> AggrFunctionStateUpdatePartial<T> for State where T: EvaluableRef<'static>, State: ConcreteAggrFunctionState, [src]

pub unsafe default fn update_unsafe( &mut Self, &mut EvalContext, Option<T>) -> Result<(), Error>[src]

pub unsafe default fn update_repeat_unsafe( &mut Self, &mut EvalContext, Option<T>, usize) -> Result<(), Error>[src]

pub unsafe default fn update_vector_unsafe( &mut Self, &mut EvalContext, Option<T>, <T as EvaluableRef<'static>>::ChunkedType, &[usize]) -> Result<(), Error>[src]

impl<T, State> AggrFunctionStateUpdatePartial<T> for State where T: EvaluableRef<'static>, State: ConcreteAggrFunctionState<ParameterType = T>, [src]

pub unsafe fn update_unsafe( &mut Self, &mut EvalContext, Option<T>) -> Result<(), Error>[src]

pub unsafe fn update_repeat_unsafe( &mut Self, &mut EvalContext, Option<T>, usize) -> Result<(), Error>[src]

pub unsafe fn update_vector_unsafe( &mut Self, &mut EvalContext, Option<T>, <T as EvaluableRef<'static>>::ChunkedType, &[usize]) -> Result<(), Error>[src]

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

pub fn type_id(&self) -> TypeId[src]

impl<T> Borrow<T> for T where T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

impl<T> BorrowMut<T> for T where T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

impl<V, W> ConvertFrom<W> for V where W: ConvertTo<V>, [src]

pub fn convert_from(ctx: &mut EvalContext, from: W) -> Result<V, Error>[src]

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

impl<T> Instrument for T[src]

pub fn instrument(self, span: Span) -> Instrumented<Self>[src]

pub fn in_current_span(self) -> Instrumented<Self>[src]

impl<T, U> Into<U> for T where U: From<T>, [src]

pub fn into(self) -> U[src]

impl<T> Pointable for T[src]

pub const ALIGN: usize[src]

type Init = T

pub unsafe fn init(init: <T as Pointable>::Init) -> usize[src]

pub unsafe fn deref<'a>(ptr: usize) -> &'a T[src]

pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T[src]

pub unsafe fn drop(ptr: usize)[src]

impl<T> Same<T> for T[src]

type Output = T

impl<T> Sealed<T> for T where T: ?Sized, [src]

impl<T> SendSyncUnwindSafe for T where T: Send + Sync + UnwindSafe + ?Sized, [src]

impl<T, U> TryFrom<U> for T where U: Into<T>, [src]

type Error = Infallible

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

impl<T, U> TryInto<U> for T where U: TryFrom<T>, [src]

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

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

impl<V, T> VZip<V> for T where V: MultiLane<T>, [src]

pub fn vzip(self) -> V[src]