Enum AggregateFunction

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pub enum AggregateFunction {
Show 27 variants    Count,
    CountNonNull,
    Sum,
    Avg,
    Min,
    Max,
    Collect,
    StdDev,
    StdDevPop,
    Variance,
    VariancePop,
    PercentileDisc,
    PercentileCont,
    GroupConcat,
    Sample,
    CovarSamp,
    CovarPop,
    Corr,
    RegrSlope,
    RegrIntercept,
    RegrR2,
    RegrCount,
    RegrSxx,
    RegrSyy,
    RegrSxy,
    RegrAvgx,
    RegrAvgy,
}

Expand description

Aggregate function.

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Count

Count all rows (COUNT(*)).

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CountNonNull

Count non-null values (COUNT(expr)).

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Sum

Sum values.

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Avg

Average values.

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Min

Minimum value.

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Max

Maximum value.

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Collect

Collect into 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

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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§

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impl UnwindSafe for AggregateFunction

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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into 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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