Enum AggregateFunction

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#[non_exhaustive]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.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

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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

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

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impl Copy for AggregateFunction

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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 Eq for AggregateFunction

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impl PartialEq for AggregateFunction

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

Equality operator ==. Read more

1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more

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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, 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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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 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>::Error>

Performs the conversion.

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impl<T, U> TryInto for T
where U: TryFrom<T>,

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type Error = >::Error

The type returned in the event of a conversion error.

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fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

AggregateFunction

Enum AggregateFunction Copy item path

Variants (Non-exhaustive)§

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

Trait Implementations§

impl Clone for AggregateFunction

fn clone(&self) -> AggregateFunction

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

impl Copy for AggregateFunction

impl Debug for AggregateFunction

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

impl Eq for AggregateFunction

impl PartialEq for AggregateFunction

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

fn ne(&self, other: &Rhs) -> bool

impl StructuralPartialEq for AggregateFunction

Auto Trait Implementations§

impl Freeze for AggregateFunction

impl RefUnwindSafe for AggregateFunction

impl Send for AggregateFunction

impl Sync for AggregateFunction

impl Unpin for AggregateFunction

impl UnsafeUnpin for AggregateFunction

impl UnwindSafe for AggregateFunction

Blanket Implementations§

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

impl<T> CloneToUninit for Twhere T: Clone,

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

impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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

impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> IntoEither for T

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

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>where F: FnOnce(&Self) -> bool,

impl<T> Pointable for T

const ALIGN: usize

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

Enum AggregateFunction

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

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

impl<T> ToOwned for T
where T: Clone,

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

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,