Struct RowsExpectedError

pub struct RowsExpectedError;

QueryResult::rows() or a similar function 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).

Trait Implementations

impl Clone for RowsExpectedError

fn clone(&self) -> RowsExpectedError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RowsExpectedError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for RowsExpectedError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for RowsExpectedError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<RowsExpectedError> for FirstRowError

fn from(source: RowsExpectedError) -> Self

Converts to this type from the input type.

impl From<RowsExpectedError> for FirstRowTypedError

fn from(source: RowsExpectedError) -> Self

Converts to this type from the input type.

impl From<RowsExpectedError> for MaybeFirstRowTypedError

fn from(source: RowsExpectedError) -> Self

Converts to this type from the input type.

impl From<RowsExpectedError> for SingleRowError

fn from(source: RowsExpectedError) -> Self

Converts to this type from the input type.

impl From<RowsExpectedError> for SingleRowTypedError

fn from(source: RowsExpectedError) -> Self

Converts to this type from the input type.

impl PartialEq for RowsExpectedError

fn eq(&self, other: &RowsExpectedError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for RowsExpectedError

impl StructuralPartialEq for RowsExpectedError