Enum SqlError 

pub enum SqlError {
    Syntax(String),
    Constraint(String),
    Other(String),
    Unavailable(String),
}

Why a SQL operation failed.

Variants

Syntax(String)

The statement could not be parsed or planned.

Constraint(String)

A constraint (unique, type, foreign key, …) was violated.

Other(String)

Any other backend/transport error (I/O, connection, …).

Unavailable(String)

The backend is not ready yet — a host-MANAGED database that is still starting, recovering, or has no healthy replica (distinct from a permanent config/transport error). This is transient: the caller should retry, or return a retryable 503 — never treat it as a permanent “not configured”/“not granted” failure. Emitted only by the managed-compute resolver; an external/local backend’s outages stay Other (per-DB resilience, no readiness gate).

Implementations

impl SqlError

pub fn other<E: Display>(err: E) -> Self

Wrap any displayable error as SqlError::Other.

pub fn unavailable<E: Display>(err: E) -> Self

Wrap a displayable error as SqlError::Unavailable — a transient “managed backend not ready yet” condition (still starting / recovering / no healthy replica).

pub fn is_unavailable(&self) -> bool

Whether this is the transient Unavailable not-ready condition (the caller may retry or gate with a retryable 503).

Trait Implementations

impl Clone for SqlError

fn clone(&self) -> SqlError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SqlError

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

Formats the value using the given formatter.

impl Display for SqlError

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

Formats the value using the given formatter.

impl Error for SqlError

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.