Trait JoinedField 

pub trait JoinedField<T> { }

The join reads null for a missing, hidden or other principal’s record, so a joined field is an Option: of the column’s type, or the column’s own Option.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T: Cast> JoinedField<Option<T>> for Option<T>

impl<T: Cast> JoinedField<T> for Option<T>

Implementors