Enum ProjectionKind 

pub enum ProjectionKind {
    Column(String),
    Aggregate(AggregateCall),
}

What an individual projection item produces.

Variants

Column(String)

Bare column reference: SELECT a, b, c.

Aggregate(AggregateCall)

Aggregate function call: COUNT(*), SUM(col), etc.

Trait Implementations

impl Clone for ProjectionKind

fn clone(&self) -> ProjectionKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProjectionKind

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

Formats the value using the given formatter.