Struct diesel::expression::dsl::Sum

pub struct Sum<T> { /* fields omitted */ }

Trait Implementations

impl<T: Debug> Debug for Sum<T>

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

Formats the value using the given formatter.

impl<T: Clone> Clone for Sum<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Copy> Copy for Sum<T>

impl<ST, T> Expression for Sum<T> where
    ST: Foldable,
    T: Expression<SqlType = ST>, 

type SqlType = <<T as Expression>::SqlType as Foldable>::Sum

impl<T, DB> QueryFragment<DB> for Sum<T> where
    T: Expression + QueryFragment<DB>,
    DB: Backend + HasSqlType<T::SqlType>, 

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,
    metadata_lookup: &DB::MetadataLookup
) -> QueryResult<()>

fn is_safe_to_cache_prepared(&self) -> QueryResult<bool>

impl<T> QueryId for Sum<T> where
    T: QueryId, 

type QueryId = Sum<T::QueryId>

fn has_static_query_id() -> bool

fn query_id() -> Option<TypeId>

impl<T, QS> SelectableExpression<QS> for Sum<T> where
    Sum<T>: AppearsOnTable<QS>,
    T: SelectableExpression<QS>, 

impl<T, QS> AppearsOnTable<QS> for Sum<T> where
    Sum<T>: Expression,
    T: AppearsOnTable<QS>,