Enum WindowFrameFunction 

pub enum WindowFrameFunction {
    Avg,
    Sum,
    Min,
    Max,
    Count,
    FirstValue,
    LastValue,
    Corr,
    CovarSamp,
    CovarPop,
}

Types of aggregate functions used with window frames.

Variants

Avg

AVG(col) OVER (… ROWS BETWEEN …)

Sum

SUM(col) OVER (… ROWS BETWEEN …)

Min

MIN(col) OVER (… ROWS BETWEEN …)

Max

MAX(col) OVER (… ROWS BETWEEN …)

Count

COUNT(*) OVER (… ROWS BETWEEN …)

FirstValue

FIRST_VALUE(col) OVER (… ROWS BETWEEN …)

LastValue

LAST_VALUE(col) OVER (… ROWS BETWEEN …)

Corr

CORR(x, y) OVER (… ROWS BETWEEN …) — Pearson correlation over the frame. Bivariate; column holds the first argument.

CovarSamp

COVAR_SAMP(x, y) OVER (… ROWS BETWEEN …) — sample covariance.

CovarPop

COVAR_POP(x, y) OVER (… ROWS BETWEEN …) — population covariance.

Implementations

impl WindowFrameFunction

pub fn sql_name(&self) -> &'static str

Returns the function name as used in SQL.

Trait Implementations

impl Clone for WindowFrameFunction

fn clone(&self) -> WindowFrameFunction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WindowFrameFunction

impl Debug for WindowFrameFunction

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

Formats the value using the given formatter.

impl Eq for WindowFrameFunction

impl Hash for WindowFrameFunction

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for WindowFrameFunction

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for WindowFrameFunction