Function diesel::expression::dsl::not

pub fn not<T: AsExpression<Bool>>(expr: T) -> Not<T>

Creates a SQL NOT expression

Example

use diesel::expression::not;

let users_with_name = users.select(id).filter(name.eq("Sean"));
let users_not_with_name = users.select(id).filter(
    not(name.eq("Sean")));

assert_eq!(Ok(1), users_with_name.first(&connection));
assert_eq!(Ok(2), users_not_with_name.first(&connection));