Trait QueryRelation 

pub trait QueryRelation:
    QuerySource
    + AsQuery
    + Sized {
    type AllColumns: SelectableExpression<Self> + ValidGrouping<()>;

    // Required method
    fn all_columns() -> Self::AllColumns;
}

A SQL database relation that can be queried

This includes tables and database views

Types which implement this trait are usually generated by the table! macro

Required Associated Types

type AllColumns: SelectableExpression<Self> + ValidGrouping<()>

The type returned by all_columns

Required Methods

fn all_columns() -> Self::AllColumns

Returns a tuple of all columns belonging to this table.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors

impl<T> QueryRelation for T

where T: Table,

type AllColumns = <T as Table>::AllColumns