Struct Aggregate 

pub struct Aggregate {
    pub func: AggFunc,
    pub column: Option<String>,
    pub alias: String,
    pub distinct: bool,
}

A single aggregate output column, e.g. SUM(total) AS total_sum.

Fields

func: AggFunc

column: Option<String>

Source column. None means COUNT(*) (only valid for Count).

alias: String

Output column name in each result row.

distinct: bool

DISTINCT modifier, e.g. COUNT(DISTINCT col). Requires a column; it is a no-op for MIN/MAX. Defaults to false so existing serialized queries deserialize unchanged.

Trait Implementations

impl Clone for Aggregate

fn clone(&self) -> Aggregate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Aggregate

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Aggregate

fn deserialize<__D>( __deserializer: __D, ) -> Result<Aggregate, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Aggregate

fn eq(&self, other: &Aggregate) -> 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 Aggregate

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Aggregate