Trait HasAggStatus 

pub trait HasAggStatus {
    type Status;
}

Extract the aggregate status of a type that appears in a SELECT list.

Implemented for column ZSTs (always Scalar), SQLExpr, and expression wrappers.

Required Associated Types

type Status

Implementors

impl<E: HasAggStatus> HasAggStatus for AliasedExpr<E>

type Status = <E as HasAggStatus>::Status

impl<V, T, N, A> HasAggStatus for SQLExpr<'_, V, T, N, A>

where V: SQLParam, T: DataType, N: Nullability, A: AggToStatus,

type Status = <A as AggToStatus>::Status