Struct diesel::expression::helper_types::IsNotNull
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pub struct IsNotNull<T> { /* fields omitted */ }
Methods
impl<T> IsNotNull<T>
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fn new(expr: T) -> Self
Trait Implementations
impl<T: Debug> Debug for IsNotNull<T>
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impl<T: Clone> Clone for IsNotNull<T>
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fn clone(&self) -> IsNotNull<T>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0
Performs copy-assignment from source
. Read more
impl<T: Copy> Copy for IsNotNull<T>
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impl<T> QueryId for IsNotNull<T> where
T: QueryId,
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T: QueryId,
type QueryId = IsNotNull<T::QueryId>
fn has_static_query_id() -> bool
fn query_id() -> Option<TypeId>
impl<T, QS> SelectableExpression<QS> for IsNotNull<T> where
IsNotNull<T>: AppearsOnTable<QS>,
T: SelectableExpression<QS>,
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IsNotNull<T>: AppearsOnTable<QS>,
T: SelectableExpression<QS>,
impl<T, QS> AppearsOnTable<QS> for IsNotNull<T> where
IsNotNull<T>: Expression,
T: AppearsOnTable<QS>,
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IsNotNull<T>: Expression,
T: AppearsOnTable<QS>,
impl<T> Expression for IsNotNull<T> where
T: Expression,
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T: Expression,
impl<T, DB> QueryFragment<DB> for IsNotNull<T> where
DB: Backend,
T: QueryFragment<DB>,
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DB: Backend,
T: QueryFragment<DB>,
fn walk_ast(&self, out: AstPass<DB>) -> QueryResult<()>
fn to_sql(&self, out: &mut DB::QueryBuilder) -> QueryResult<()>
fn collect_binds(&self, out: &mut DB::BindCollector) -> QueryResult<()>
fn is_safe_to_cache_prepared(&self) -> QueryResult<bool>
impl<T> NonAggregate for IsNotNull<T> where
T: NonAggregate,
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T: NonAggregate,