Trait JoinOnDsl

pub trait JoinOnDsl: Sized {
    // Provided method
    fn on<On>(self, on: On) -> On<Self, On> { ... }
}

Specify the ON clause for a join statement. This will override any implicit ON clause that would come from joinable!

Example

let data = users::table
    .left_join(posts::table.on(
        users::id.eq(posts::user_id).and(
            posts::title.eq("My first post"))
    ))
    .select((users::name, posts::title.nullable()))
    .load(connection);
let expected = vec![
    ("Sean".to_string(), Some("My first post".to_string())),
    ("Tess".to_string(), None),
];
assert_eq!(Ok(expected), data);

Provided Methods

fn on<On>(self, on: On) -> On<Self, On>

See the trait documentation.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T: QuerySource> JoinOnDsl for T