Struct tidb_query_aggr::impl_sum::AggrFnStateSumForSet [−][src]
Fields
sum: Decimal
has_value: bool
Implementations
impl AggrFnStateSumForSet where
VectorValue: VectorValueExt<Decimal>,
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VectorValue: VectorValueExt<Decimal>,
pub fn new() -> Self
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fn update_concrete(
&mut self,
ctx: &mut EvalContext,
value: Option<SetRef<'_>>
) -> Result<()>
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&mut self,
ctx: &mut EvalContext,
value: Option<SetRef<'_>>
) -> Result<()>
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>,
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VectorValue: VectorValueExt<Decimal>,
impl Debug for AggrFnStateSumForSet where
VectorValue: VectorValueExt<Decimal>,
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VectorValue: VectorValueExt<Decimal>,
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,
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F: ConcreteAggrFunctionState,
impl<T, State> AggrFunctionStateUpdatePartial<T> for State where
T: EvaluableRef<'static>,
State: ConcreteAggrFunctionState,
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T: EvaluableRef<'static>,
State: ConcreteAggrFunctionState,
impl<T, State> AggrFunctionStateUpdatePartial<T> for State where
T: EvaluableRef<'static>,
State: ConcreteAggrFunctionState<ParameterType = T>,
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T: EvaluableRef<'static>,
State: ConcreteAggrFunctionState<ParameterType = T>,
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,
impl<V, W> ConvertFrom<W> for V where
W: ConvertTo<V>,
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W: ConvertTo<V>,
impl<T> From<T> for T
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impl<T> Instrument for T
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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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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>,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
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V: MultiLane<T>,