Enum ColumnErrorKind 

#[non_exhaustive]
pub enum ColumnErrorKind {
    Missing,
    Null,
    TypeMismatch {
        expected: String,
        actual: String,
    },
}

The structured cause of an Error::Column.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Missing

Column name was not found in the result schema.

Null

Column was SQL NULL but the target type was not Option<T>.

TypeMismatch

Column value could not be decoded as the target type.

Fields

expected: String

Rust type name the caller asked for.

actual: String

Hyper SQL type name (or descriptive label) of the column.

Trait Implementations

impl Debug for ColumnErrorKind

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

Formats the value using the given formatter.

impl Display for ColumnErrorKind

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

Formats the value using the given formatter.

impl Error for ColumnErrorKind

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.