Enum SelectAggregator 

pub enum SelectAggregator {
    Avg,
    Count,
    Sum,
    Max,
    Min,
}

Representation of an aggregator function

Variants

Avg

Returns the average value of all non-null values. The result of avg is a floating point value, except all input values are null, than the result will also be null.

Count

Returns the count of the number of times that the column is not null.

Sum

Returns the summary off all non-null values in the group. If there are only null values in the group, this function will return null.

Max

Returns the maximum value of all values in the group. If there are only null values in the group, this function will return null.

Min

Returns the minimum value of all values in the group. If there are only null values in the group, this function will return null.

Trait Implementations

impl Clone for SelectAggregator

fn clone(&self) -> SelectAggregator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectAggregator

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

Formats the value using the given formatter.

impl Copy for SelectAggregator