Trait ColumnKey 

pub trait ColumnKey:
    Spelled
    + Copy
    + 'static {
    type Table: Table;
    type Sql: SqlType;
}

A column’s compile-time identity. One implementor per column in the schema, generated by #[derive(Table)] (and by with!{} for a CTE’s pseudo-columns), which is what lets a column be a key — two columns of the same table and SQL type are still distinct types here, so a row can be indexed by column without ambiguity.

Required Associated Types

type Table: Table

type Sql: SqlType

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors