Enum AggFunc 

pub enum AggFunc {
    Sum,
    Avg,
    Min,
    Max,
    Count,
    CountDistinct,
    Median,
    StdDev,
    Variance,
    First,
    Last,
}

Aggregation function for measures

Variants

Sum

Sum of values

Avg

Average (mean) of values

Min

Minimum value

Max

Maximum value

Count

Count of values (non-null)

CountDistinct

Count of distinct values

Median

Median value

StdDev

Standard deviation

Variance

Variance

First

First value

Last

Last value

Implementations

impl AggFunc

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

Get the SQL function name for this aggregation

pub fn is_compatible_with(&self, data_type: &DataType) -> bool

Check if this aggregation is compatible with the given data type

Trait Implementations

impl Clone for AggFunc

fn clone(&self) -> AggFunc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AggFunc

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AggFunc

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for AggFunc

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

Formats the value using the given formatter.

impl Hash for AggFunc

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 AggFunc

fn eq(&self, other: &AggFunc) -> 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 Serialize for AggFunc

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for AggFunc

impl Eq for AggFunc

impl StructuralPartialEq for AggFunc