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AggregateFunction

grafeo_core::execution::operators::accumulator

Enum AggregateFunction 

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pub enum AggregateFunction {

Show 29 variants    Count,
    CountNonNull,
    Sum,
    Avg,
    Min,
    Max,
    First,
    Last,
    Collect,
    StdDev,
    StdDevPop,
    Variance,
    VariancePop,
    PercentileDisc,
    PercentileCont,
    GroupConcat,
    Sample,
    CovarSamp,
    CovarPop,
    Corr,
    RegrSlope,
    RegrIntercept,
    RegrR2,
    RegrCount,
    RegrSxx,
    RegrSyy,
    RegrSxy,
    RegrAvgx,
    RegrAvgy,

}
Expand description

Aggregation function types.

Variants§

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Count

Count of rows (COUNT(*)).

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CountNonNull

Count of non-null values (COUNT(column)).

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Sum

Sum of values.

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Avg

Average of values.

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Min

Minimum value.

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Max

Maximum value.

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First

First value in the group.

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Last

Last value in the group.

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Collect

Collect values into a list.

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StdDev

Sample standard deviation (STDEV).

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StdDevPop

Population standard deviation (STDEVP).

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Variance

Sample variance (VAR_SAMP / VARIANCE).

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VariancePop

Population variance (VAR_POP).

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PercentileDisc

Discrete percentile (PERCENTILE_DISC).

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PercentileCont

Continuous percentile (PERCENTILE_CONT).

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GroupConcat

Concatenate values with separator (GROUP_CONCAT).

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Sample

Return an arbitrary value from the group (SAMPLE).

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CovarSamp

Sample covariance (COVAR_SAMP(y, x)).

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CovarPop

Population covariance (COVAR_POP(y, x)).

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Corr

Pearson correlation coefficient (CORR(y, x)).

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RegrSlope

Regression slope (REGR_SLOPE(y, x)).

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RegrIntercept

Regression intercept (REGR_INTERCEPT(y, x)).

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RegrR2

Coefficient of determination (REGR_R2(y, x)).

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RegrCount

Regression count of non-null pairs (REGR_COUNT(y, x)).

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RegrSxx

Regression sum of squares for x (REGR_SXX(y, x)).

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RegrSyy

Regression sum of squares for y (REGR_SYY(y, x)).

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RegrSxy

Regression sum of cross-products (REGR_SXY(y, x)).

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RegrAvgx

Regression average of x (REGR_AVGX(y, x)).

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RegrAvgy

Regression average of y (REGR_AVGY(y, x)).

Trait Implementations§

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impl Clone for AggregateFunction

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fn clone(&self) -> AggregateFunction

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for AggregateFunction

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

Formats the value using the given formatter. Read more
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impl PartialEq for AggregateFunction

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fn eq(&self, other: &AggregateFunction) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for AggregateFunction

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impl Eq for AggregateFunction

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impl StructuralPartialEq for AggregateFunction

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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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.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.