pub struct now;
Expand description
Represents the SQL CURRENT_TIMESTAMP
constant. This is equivalent to the
NOW()
function on backends that support it.
Trait Implementations
sourceimpl<Rhs> Add<Rhs> for now where
Rhs: AsExpression<<<now as Expression>::SqlType as Add>::Rhs>,
impl<Rhs> Add<Rhs> for now where
Rhs: AsExpression<<<now as Expression>::SqlType as Add>::Rhs>,
sourceimpl AsExpression<Nullable<Timestamp>> for now
impl AsExpression<Nullable<Timestamp>> for now
type Expression = Coerce<now, Nullable<Timestamp>>
type Expression = Coerce<now, Nullable<Timestamp>>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl AsExpression<Nullable<Timestamptz>> for now
impl AsExpression<Nullable<Timestamptz>> for now
type Expression = Coerce<now, Nullable<Timestamptz>>
type Expression = Coerce<now, Nullable<Timestamptz>>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl AsExpression<Timestamptz> for now
impl AsExpression<Timestamptz> for now
type Expression = Coerce<now, Timestamptz>
type Expression = Coerce<now, Timestamptz>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl Expression for now
impl Expression for now
sourceimpl<DB: Backend> QueryFragment<DB> for now
impl<DB: Backend> QueryFragment<DB> for now
sourcefn walk_ast(&self, out: AstPass<'_, DB>) -> QueryResult<()>
fn walk_ast(&self, out: AstPass<'_, DB>) -> QueryResult<()>
Walk over this QueryFragment
for all passes. Read more
sourcefn to_sql(&self, out: &mut DB::QueryBuilder) -> QueryResult<()>
fn to_sql(&self, out: &mut DB::QueryBuilder) -> QueryResult<()>
Converts this QueryFragment
to its SQL representation. Read more
sourcefn collect_binds(
&self,
out: &mut DB::BindCollector,
metadata_lookup: &DB::MetadataLookup
) -> QueryResult<()>
fn collect_binds(
&self,
out: &mut DB::BindCollector,
metadata_lookup: &DB::MetadataLookup
) -> QueryResult<()>
Serializes all bind parameters in this query. Read more
sourcefn is_safe_to_cache_prepared(&self) -> QueryResult<bool>
fn is_safe_to_cache_prepared(&self) -> QueryResult<bool>
Is this query safe to store in the prepared statement cache? Read more
sourceimpl QueryId for now
impl QueryId for now
sourceconst HAS_STATIC_QUERY_ID: bool
const HAS_STATIC_QUERY_ID: bool
Can the SQL generated by Self
be uniquely identified by its type? Read more
sourceimpl<Rhs> Sub<Rhs> for now where
Rhs: AsExpression<<<now as Expression>::SqlType as Sub>::Rhs>,
impl<Rhs> Sub<Rhs> for now where
Rhs: AsExpression<<<now as Expression>::SqlType as Sub>::Rhs>,
impl<QS> AppearsOnTable<QS> for now where
now: Expression,
impl Copy for now
impl NonAggregate for now
impl<QS> SelectableExpression<QS> for now where
now: AppearsOnTable<QS>,
Auto Trait Implementations
impl RefUnwindSafe for now
impl Send for now
impl Sync for now
impl Unpin for now
impl UnwindSafe for now
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<Conn, DB, T> ExecuteDsl<Conn, DB> for T where
Conn: Connection<Backend = DB>,
DB: Backend,
T: QueryFragment<DB> + QueryId,
impl<Conn, DB, T> ExecuteDsl<Conn, DB> for T where
Conn: Connection<Backend = DB>,
DB: Backend,
T: QueryFragment<DB> + QueryId,
sourcefn execute(query: Self, conn: &Conn) -> QueryResult<usize>
fn execute(query: Self, conn: &Conn) -> QueryResult<usize>
Execute this command
sourceimpl<T> IntoSql for T
impl<T> IntoSql for T
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more