Struct diesel::expression::helper_types::IsNull

pub struct IsNull<T> {
    // some fields omitted
}

Methods

impl<T> IsNull<T>

fn new(expr: T) -> Self

Trait Implementations

impl<T: Copy> Copy for IsNull<T>

impl<T: Clone> Clone for IsNull<T>

fn clone(&self) -> IsNull<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for IsNull<T>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<T> Expression for IsNull<T> where T: Expression

type SqlType = Bool

fn to_sql(&self, out: &mut QueryBuilder) -> BuildQueryResult

impl<T, QS> SelectableExpression<QS> for IsNull<T> where T: SelectableExpression<QS>

impl<T> NonAggregate for IsNull<T> where T: NonAggregate