Struct tidb_query_aggr::impl_sum::AggrFnStateSumForSet[][src]

pub struct AggrFnStateSumForSet where
    VectorValue: VectorValueExt<Decimal>, 
{ sum: Decimal, has_value: bool, }

Fields

sum: Decimalhas_value: bool

Implementations

impl AggrFnStateSumForSet where
    VectorValue: VectorValueExt<Decimal>, 
[src]

pub fn new() -> Self[src]

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

Notes

Functions such as SUM() or AVG() 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 ConcreteAggrFunctionState for AggrFnStateSumForSet where
    VectorValue: VectorValueExt<Decimal>, 
[src]

type ParameterType = SetRef<'static>

impl Debug for AggrFnStateSumForSet where
    VectorValue: VectorValueExt<Decimal>, 
[src]

Auto Trait Implementations

impl RefUnwindSafe for AggrFnStateSumForSet

impl Send for AggrFnStateSumForSet

impl Sync for AggrFnStateSumForSet

impl Unpin for AggrFnStateSumForSet

impl UnwindSafe for AggrFnStateSumForSet

Blanket Implementations

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

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

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

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

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

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

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

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

impl<T> Instrument for T[src]

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

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
[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

The type returned in the event of a conversion error.

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

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>, 
[src]