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use sql_types::{IntoNullable, SqlOrd};
sql_function! {
/// Represents a SQL `MAX` function. This function can only take types which are
/// ordered.
///
/// # Examples
///
/// ```rust
/// # #[macro_use] extern crate diesel;
/// # include!("../../doctest_setup.rs");
/// # use diesel::dsl::*;
/// #
/// # fn main() {
/// # use schema::animals::dsl::*;
/// # let connection = establish_connection();
/// assert_eq!(Ok(Some(8)), animals.select(max(legs)).first(&connection));
/// # }
#[aggregate]
fn max<ST: SqlOrd + IntoNullable>(expr: ST) -> ST::Nullable;
}
sql_function! {
/// Represents a SQL `MIN` function. This function can only take types which are
/// ordered.
///
/// # Examples
///
/// ```rust
/// # #[macro_use] extern crate diesel;
/// # include!("../../doctest_setup.rs");
/// # use diesel::dsl::*;
/// #
/// # fn main() {
/// # use schema::animals::dsl::*;
/// # let connection = establish_connection();
/// assert_eq!(Ok(Some(4)), animals.select(min(legs)).first(&connection));
/// # }
#[aggregate]
fn min<ST: SqlOrd + IntoNullable>(expr: ST) -> ST::Nullable;
}