Enum PgError 

pub enum PgError {
    Connection(String),
    Protocol(String),
    Auth(String),
    Query(String),
    NoRows,
    Io(Error),
    Encode(String),
    Timeout(String),
    PoolExhausted {
        max: usize,
    },
    PoolClosed,
}

Error type for PostgreSQL driver operations.

Variants

Connection(String)

TCP / TLS connection failure with the PostgreSQL server.

Protocol(String)

Wire-protocol framing or decoding error.

Auth(String)

Authentication failure (bad password, unsupported mechanism, etc.).

Query(String)

Query execution error returned by the backend (e.g. constraint violation).

NoRows

The query returned zero rows when at least one was expected.

Io(Error)

I/O error (preserves inner error for chaining)

Encode(String)

Encoding error (parameter limit, etc.)

Timeout(String)

Operation timed out (connection, acquire, query)

PoolExhausted

Pool exhausted — all connections are in use

Fields

max: usize

Maximum pool size that was reached.

PoolClosed

Pool is closed and no longer accepting requests

Trait Implementations

impl Debug for PgError

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

Formats the value using the given formatter.

impl Display for PgError

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

Formats the value using the given formatter.

impl Error for PgError

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 From<Error> for PgError

fn from(e: Error) -> Self

Converts to this type from the input type.