Enum SchemaConflict 

pub enum SchemaConflict {
    Removed(ColumnDefinition),
    Changed {
        persisted: ColumnDefinition,
        declared: ColumnDefinition,
    },
    AddedNotNullable(ColumnDefinition),
}

Why a declared schema is not an additive extension of a persisted one.

Variants

Removed(ColumnDefinition)

A persisted attribute is absent from the declaration.

Changed

A persisted attribute is declared with a different name, type, or nullability.

Fields

persisted: ColumnDefinition

Definition already persisted.

declared: ColumnDefinition

Definition declared with the same identifier.

AddedNotNullable(ColumnDefinition)

A new attribute is declared non-nullable, so rows written before it existed could not read it as null.

Trait Implementations

impl Clone for SchemaConflict

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaConflict

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

Formats the value using the given formatter.

impl Display for SchemaConflict

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

Formats the value using the given formatter.

impl Eq for SchemaConflict

impl Error for SchemaConflict

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 PartialEq for SchemaConflict

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SchemaConflict