Trait diesel::expression::MixedAggregates

source · [−]
pub trait MixedAggregates<Other> {
    type Output;
}
Expand description

Can two IsAggregate types appear in the same expression?

You should never implement this trait. It will eventually become a trait alias.

is_aggregate::Yes and is_aggregate::No can only appear with themselves or is_aggregate::Never. is_aggregate::Never can appear with anything.

Required Associated Types

What is the resulting IsAggregate type?

Implementors