diesel_compile_tests/tests/compile-fail/custom_returning_requires_nonaggregate.rs

#[macro_use] extern crate diesel;

use diesel::*;
use diesel::dsl::count;

table! {
    users {
        id -> Integer,
        name -> VarChar,
    }
}

#[derive(Insertable)]
#[table_name="users"]
pub struct NewUser {
    name: String,
}

fn main() {
    use self::users::dsl::*;

    let stmt = update(users.filter(id.eq(1))).set(name.eq("Bill")).returning(count(id));
    //~^ ERROR MixedAggregates

    let new_user = NewUser {
        name: "Foobar".to_string(),
    };
    let stmt = insert_into(users).values(&new_user).returning((name, count(name)));
    //~^ ERROR MixedAggregates
}