pub enum SingleRowError {
RowsExpected(RowsExpectedError),
BadNumberOfRows(usize),
}
Variants§
RowsExpected(RowsExpectedError)
QueryResult::single_row()
called on a bad QueryResult.
Expected QueryResult.rows
to be Some
, but it was None
.
QueryResult.rows
is Some
for queries that can return rows (e.g SELECT
).
It is None
for queries that can’t return rows (e.g INSERT
).
BadNumberOfRows(usize)
Expected a single row, found other number of rows
Trait Implementations§
Source§impl Clone for SingleRowError
impl Clone for SingleRowError
Source§fn clone(&self) -> SingleRowError
fn clone(&self) -> SingleRowError
Returns a copy of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moreSource§impl Debug for SingleRowError
impl Debug for SingleRowError
Source§impl Display for SingleRowError
impl Display for SingleRowError
Source§impl Error for SingleRowError
impl Error for SingleRowError
Source§fn source(&self) -> Option<&(dyn Error + 'static)>
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§fn description(&self) -> &str
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
Source§impl From<RowsExpectedError> for SingleRowError
impl From<RowsExpectedError> for SingleRowError
Source§fn from(source: RowsExpectedError) -> Self
fn from(source: RowsExpectedError) -> Self
Converts to this type from the input type.
Source§impl From<SingleRowError> for SingleRowTypedError
impl From<SingleRowError> for SingleRowTypedError
Source§fn from(err: SingleRowError) -> SingleRowTypedError
fn from(err: SingleRowError) -> SingleRowTypedError
Converts to this type from the input type.
Source§impl PartialEq for SingleRowError
impl PartialEq for SingleRowError
impl Eq for SingleRowError
impl StructuralPartialEq for SingleRowError
Auto Trait Implementations§
impl Freeze for SingleRowError
impl RefUnwindSafe for SingleRowError
impl Send for SingleRowError
impl Sync for SingleRowError
impl Unpin for SingleRowError
impl UnwindSafe for SingleRowError
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more