Enum sqlx::Error

#[non_exhaustive]pub enum Error {
    Io(Error),
    UrlParse(ParseError),
    Database(Box<dyn DatabaseError + 'static>),
    RowNotFound,
    ColumnNotFound(Box<str>),
    ColumnIndexOutOfBounds {
        index: usize,
        len: usize,
    },
    Protocol(Box<str>),
    PoolTimedOut(Option<Box<dyn Error + 'static + Send + Sync>>),
    PoolClosed,
    Tls(Box<dyn Error + 'static + Send + Sync>),
    Decode(Box<dyn Error + 'static + Send + Sync>),
}

A generic error that represents all the ways a method can fail inside of SQLx.

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.

Io(Error)

Error communicating with the database.

UrlParse(ParseError)

Connection URL was malformed.

Database(Box<dyn DatabaseError + 'static>)

An error was returned by the database.

RowNotFound

No row was returned during query::Map::fetch_one or QueryAs::fetch_one.

ColumnNotFound(Box<str>)

Column was not found by name in a Row (during Row::get).

ColumnIndexOutOfBounds

Column index was out of bounds (e.g., asking for column 4 in a 2-column row).

Fields of ColumnIndexOutOfBounds

index: usizelen: usize

Protocol(Box<str>)

Unexpected or invalid data was encountered. This would indicate that we received data that we were not expecting or it was in a format we did not understand. This generally means either there is a programming error in a SQLx driver or something with the connection or the database database itself is corrupted.

Context is provided by the included error message.

PoolTimedOut(Option<Box<dyn Error + 'static + Send + Sync>>)

A Pool::acquire timed out due to connections not becoming available or because another task encountered too many errors while trying to open a new connection.

PoolClosed

Pool::close was called while we were waiting in Pool::acquire.

Tls(Box<dyn Error + 'static + Send + Sync>)

An error occurred while attempting to setup TLS. This should only be returned from an explicit ask for TLS.

Decode(Box<dyn Error + 'static + Send + Sync>)

An error occurred decoding data received from the database.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

fn description(&self) -> &str

Deprecated since 1.42.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

fn cause(&self) -> Option<&dyn Error>

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<Error> for Error

fn from(err: Error) -> Error

Performs the conversion.

impl From<Error> for Error

fn from(err: Error) -> Error

Performs the conversion.

impl From<ErrorKind> for Error

fn from(err: ErrorKind) -> Error

Performs the conversion.

impl From<MySqlError> for Error

fn from(err: MySqlError) -> Error

Performs the conversion.

impl From<ParseError> for Error

fn from(err: ParseError) -> Error

Performs the conversion.

impl From<PgError> for Error

fn from(err: PgError) -> Error

Performs the conversion.

impl<'_> From<ProtocolError<'_>> for Error

fn from(err: ProtocolError) -> Error

Performs the conversion.

impl From<SqliteError> for Error

fn from(err: SqliteError) -> Error

Performs the conversion.

impl<'_> From<TlsError<'_>> for Error

fn from(err: TlsError) -> Error

Performs the conversion.

impl From<UnexpectedNullError> for Error

fn from(err: UnexpectedNullError) -> Error

Performs the conversion.