Struct tidb_query_aggr::impl_count::AggrFnStateCount[][src]

pub struct AggrFnStateCount {
    count: usize,
}

The state of the COUNT aggregate function.

Fields

count: usize

Implementations

impl AggrFnStateCount[src]

pub fn new() -> Self[src]

fn update<'a, TT>(
    &mut self,
    _ctx: &mut EvalContext,
    value: Option<TT>
) -> Result<()> where
    TT: EvaluableRef<'a>, 
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fn update_repeat<'a, TT>(
    &mut self,
    _ctx: &mut EvalContext,
    value: Option<TT>,
    repeat_times: usize
) -> Result<()> where
    TT: EvaluableRef<'a>, 
[src]

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>, 
[src]

Trait Implementations

impl AggrFunctionState for AggrFnStateCount[src]

impl<T> AggrFunctionStateUpdatePartial<T> for AggrFnStateCount where
    T: EvaluableRef<'static> + 'static,
    VectorValue: VectorValueExt<T::EvaluableType>, 
[src]

impl Debug for AggrFnStateCount[src]

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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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<V, W> ConvertFrom<W> for V where
    W: ConvertTo<V>, 
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impl<T> From<T> for T[src]

impl<T> Instrument for T[src]

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

type Init = T

The type for initializers.

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

type Output = T

Should always be Self

impl<T> Sealed<T> for T where
    T: ?Sized
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impl<T> SendSyncUnwindSafe for T where
    T: Send + Sync + UnwindSafe + ?Sized
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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.

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.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>, 
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