Enum diesel::result::DatabaseErrorKind

pub enum DatabaseErrorKind {
    UniqueViolation,
    ForeignKeyViolation,
    UnableToSendCommand,
    SerializationFailure,
    // some variants omitted
}

The kind of database error that occurred.

This is not meant to exhaustively cover all possible errors, but is used to identify errors which are commonly recovered from programmatically. This enum is not intended to be exhaustively matched, and new variants may be added in the future without a major version bump.

Variants

UniqueViolation

A unique constraint was violated.

ForeignKeyViolation

A foreign key constraint was violated.

UnableToSendCommand

The query could not be sent to the database due to a protocol violation.

An example of a case where this would occur is if you attempted to send a query with more than 65000 bind parameters using PostgreSQL.

SerializationFailure

A serializable transaction failed to commit due to a read/write dependency on a concurrent transaction.

Corresponds to SQLSTATE code 40001

This error is only detected for PostgreSQL, as we do not yet support transaction isolation levels for other backends.

Trait Implementations

impl Copy for DatabaseErrorKind

impl Clone for DatabaseErrorKind

fn clone(&self) -> DatabaseErrorKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DatabaseErrorKind

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

Formats the value using the given formatter.