Enum AggregateExpression 

#[non_exhaustive]
pub enum AggregateExpression {
    Count {
        alias: String,
    },
    CountDistinct {
        column: String,
        alias: String,
    },
    MeasureAggregate {
        column: String,
        function: AggregateFunction,
        alias: String,
    },
    AdvancedAggregate {
        column: String,
        function: AggregateFunction,
        alias: String,
        delimiter: Option<String>,
        order_by: Option<Vec<OrderByClause>>,
    },
    BoolAggregate {
        column: String,
        function: BoolAggregateFunction,
        alias: String,
    },
}

Validated aggregate expression

Variants (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.

Count

COUNT(*)

Fields

alias: String

Result alias

CountDistinct

COUNT(DISTINCT field)

Fields

column: String

Column to count

alias: String

Result alias

MeasureAggregate

Aggregate function on measure column

Fields

column: String

Measure column name

function: AggregateFunction

Aggregate function

alias: String

Result alias

AdvancedAggregate

Advanced aggregate with optional parameters

Fields

column: String

Column to aggregate

function: AggregateFunction

Aggregate function

alias: String

Result alias

delimiter: Option<String>

Optional delimiter for STRING_AGG

order_by: Option<Vec<OrderByClause>>

Optional ORDER BY for ARRAY_AGG/STRING_AGG

BoolAggregate

Boolean aggregate (BOOL_AND/BOOL_OR)

Fields

column: String

Column to aggregate (boolean expression)

function: BoolAggregateFunction

Boolean aggregate function

alias: String

Result alias

Trait Implementations

impl Clone for AggregateExpression

fn clone(&self) -> AggregateExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AggregateExpression

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AggregateExpression

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for AggregateExpression

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for AggregateExpression

impl StructuralPartialEq for AggregateExpression