Enum ErrorKind 

#[non_exhaustive]
pub enum ErrorKind {
    UniqueViolation,
    ForeignKeyViolation,
    NotNullViolation,
    CheckViolation,
    SerializationFailure,
    Deadlock,
    Busy,
    NotFound,
    Other,
}

What kind of failure an error is, named the same on every driver.

DrizzleError::kind reads it from the driver’s own error: the SQLSTATE on PostgreSQL, the extended result code (or SQLite’s message, where the driver reports only text) on SQLite, libsql, turso, D1 and Durable Objects, and the server error number on MySQL.

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.

UniqueViolation

A UNIQUE or PRIMARY KEY constraint rejected a duplicate value.

ForeignKeyViolation

A FOREIGN KEY constraint rejected a row: its parent is missing, or a child still points at the row being removed.

NotNullViolation

A NOT NULL column got no value.

CheckViolation

A CHECK constraint rejected a row.

SerializationFailure

A serializable transaction conflicted with a concurrent one. Run the transaction again.

Deadlock

The database broke a deadlock by failing this statement. Run the transaction again.

Busy

The database or a row is locked by another connection, and waiting for it failed (SQLite SQLITE_BUSY, a lock timeout). Try again.

NotFound

A query that returns exactly one row returned none.

Other

Any other failure.

Implementations

impl ErrorKind

pub const fn is_constraint_violation(self) -> bool

Whether a constraint rejected the statement.

pub const fn is_retryable(self) -> bool

Whether running the statement or transaction again can succeed: SerializationFailure, Deadlock and Busy.

Trait Implementations

impl Clone for ErrorKind

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ErrorKind

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl Eq for ErrorKind

impl Hash for ErrorKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ErrorKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ErrorKind