pub type InnerJoinQuerySource<Left, Right, On = <Left as JoinTo<Right>>::OnClause> = JoinOn<Join<Left, Right, Inner>, On>;Expand description
A query source representing the inner join between two tables.
The third generic type (On) controls how the tables are
joined.
By default, the implicit join established by joinable!
will be used, allowing you to omit the exact join
condition. For example, for the inner join between three
tables that implement JoinTo, you only need to specify
the tables: InnerJoinQuerySource<InnerJoinQuerySource<table1, table2>, table3>.
If you use an explicit ON clause, you will need to specify
the On generic type.
use diesel::{dsl, helper_types::InnerJoinQuerySource};
use schema::*;
// If you have an explicit join like this...
let join_constraint = comments::columns::post_id.eq(posts::columns::id);
posts::table.inner_join(comments::table.on(join_constraint));
// ... you can use `InnerJoinQuerySource` like this.
type JoinConstraint = dsl::Eq<comments::columns::post_id, posts::columns::id>;
type MyInnerJoinQuerySource = InnerJoinQuerySource<posts::table, comments::table, JoinConstraint>;Aliased Typeยง
struct InnerJoinQuerySource<Left, Right, On = <Left as JoinTo<Right>>::OnClause> { /* private fields */ }