# Error in db_sqlx_maria::dev - Rust
Represents all the ways a method can fail within SQLx.

# Enum db_sqlx_maria::dev::Error

    #[non_exhaustive]pub enum Error {
    Show 16 variants    Configuration(Box<dyn Error + Send + Sync>),
        Database(Box<dyn DatabaseError>),
        Io(Error),
        Tls(Box<dyn Error + Send + Sync>),
        Protocol(String),
        RowNotFound,
        TypeNotFound {
            type_name: String,
        },
        ColumnIndexOutOfBounds {
            index: usize,
            len: usize,
        },
        ColumnNotFound(String),
        ColumnDecode {
            index: String,
            source: Box<dyn Error + Send + Sync>,
        },
        Decode(Box<dyn Error + Send + Sync>),
        AnyDriverError(Box<dyn Error + Send + Sync>),
        PoolTimedOut,
        PoolClosed,
        WorkerCrashed,
        Migrate(Box<MigrateError>),
    }

Expand description

Represents all the ways a method can fail within SQLx.

## Variants (Non-exhaustive)§

This enum is marked as 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.
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### Configuration(Box<dyn Error + Send + Sync>)

Error occurred while parsing a connection string.

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### Database(Box<dyn DatabaseError>)

Error returned from the database.

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### Io(Error)

Error communicating with the database backend.

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### Tls(Box<dyn Error + Send + Sync>)

Error occurred while attempting to establish a TLS connection.

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### Protocol(String)

Unexpected or invalid data encountered while communicating with the database.

This should indicate there is a programming error in a SQLx driver or there is something corrupted with the connection to the database itself.

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### RowNotFound

No rows returned by a query that expected to return at least one row.

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### TypeNotFound

#### Fields

§ `type_name: String`

Type in query doesn’t exist. Likely due to typo or missing user type.

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### ColumnIndexOutOfBounds

#### Fields

§ `index: usize`
§ `len: usize`

Column index was out of bounds.

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### ColumnNotFound(String)

No column found for the given name.

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### ColumnDecode

#### Fields

§ `index: String`
§ `source: Box<dyn Error + Send + Sync>`

Error occurred while decoding a value from a specific column.

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### Decode(Box<dyn Error + Send + Sync>)

Error occurred while decoding a value.

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### AnyDriverError(Box<dyn Error + Send + Sync>)

Error occurred within the `Any` driver mapping to/from the native driver.

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### PoolTimedOut

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.

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### PoolClosed

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

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### WorkerCrashed

A background worker has crashed.

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### Migrate(Box<MigrateError>)

## Implementations§

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### impl Error

#### pub fn into_database_error(self) -> Option<Box<dyn DatabaseError>>

#### pub fn as_database_error(&self) -> Option<&(dyn DatabaseError + 'static)>

## Trait Implementations§

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### impl Debug for Error

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

Formats the value using the given formatter. Read more
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### impl Display for Error

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

Formats the value using the given formatter. Read more
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### impl Error for Error

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

The lower-level source of this error, if any. Read more
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#### fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
Read more
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#### fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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#### 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. Read more
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### impl<E> From<E> for Error
where E: DatabaseError,

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#### fn from(error: E) -> Error

Converts to this type from the input type.
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### impl From<Error> for Error

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#### fn from(source: Error) -> Error

Converts to this type from the input type.
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### impl From<MigrateError> for Error

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#### fn from(error: MigrateError) -> Error

Converts to this type from the input type.

## Auto Trait Implementations§

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### impl !RefUnwindSafe for Error

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### impl Send for Error

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### impl Sync for Error

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### impl Unpin for Error

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### impl !UnwindSafe for Error

## Blanket Implementations§

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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> Same for T

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#### type Output = T

Should always be `Self`
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### impl<T> ToString for T
where T: Display + ?Sized,

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#### default fn to_string(&self) -> String

Converts the given value to a `String`. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more