Enum DbError 

pub enum DbError {
    Sql(Error),
    Engine(Error),
    Streaming(StreamingError),
    DataFusion(DataFusionError),
    SourceNotFound(String),
    SinkNotFound(String),
    QueryNotFound(String),
    SourceAlreadyExists(String),
    SinkAlreadyExists(String),
    StreamNotFound(String),
    StreamAlreadyExists(String),
    TableNotFound(String),
    TableAlreadyExists(String),
    InsertError(String),
    SchemaMismatch(String),
    InvalidOperation(String),
    SqlParse(ParseError),
    Shutdown,
    Checkpoint(String),
    UnresolvedConfigVar(String),
    Connector(String),
    Pipeline(String),
    QueryPipeline {
        context: String,
        translated: String,
    },
    MaterializedView(String),
    Storage(String),
    Config(String),
    Unsupported(String),
}

Errors from database operations.

Variants

Sql(Error)

SQL parse error

Engine(Error)

Core engine error

Streaming(StreamingError)

Streaming API error

DataFusion(DataFusionError)

DataFusion error (translated to user-friendly messages on display)

SourceNotFound(String)

Source not found

SinkNotFound(String)

Sink not found

QueryNotFound(String)

Query not found

SourceAlreadyExists(String)

Source already exists

SinkAlreadyExists(String)

Sink already exists

StreamNotFound(String)

Stream not found

StreamAlreadyExists(String)

Stream already exists

TableNotFound(String)

Table not found

TableAlreadyExists(String)

Table already exists

InsertError(String)

Insert error

SchemaMismatch(String)

Schema mismatch between Rust type and SQL definition

InvalidOperation(String)

Invalid SQL statement for the operation

SqlParse(ParseError)

SQL parse error (from streaming parser)

Shutdown

Database is shut down

Checkpoint(String)

Checkpoint error

UnresolvedConfigVar(String)

Unresolved config variable

Connector(String)

Connector error

Pipeline(String)

Pipeline error (start/shutdown lifecycle)

QueryPipeline

Query pipeline error — wraps a DataFusion error with stream context. Unlike Pipeline, this variant is translated to user-friendly messages.

Fields

context: String

The stream or query name where the error occurred.

translated: String

The translated error message (already processed through translate_datafusion_error).

MaterializedView(String)

Materialized view error

Storage(String)

Storage backend error.

Config(String)

Configuration / profile validation error

Unsupported(String)

Operation is not yet implemented.

Implementations

impl DbError

pub fn query_pipeline( context: impl Into<String>, df_error: &DataFusionError, ) -> Self

Create a QueryPipeline error from a DataFusion error with stream context.

The DataFusion error is translated to a user-friendly message with structured error codes. The raw DataFusion internals are never exposed.

pub fn query_pipeline_with_columns( context: impl Into<String>, df_error: &DataFusionError, available_columns: &[&str], ) -> Self

Create a QueryPipeline error from a DataFusion error with stream context and available column names for typo suggestions.

pub fn query_pipeline_arrow( context: impl Into<String>, arrow_error: &ArrowError, ) -> Self

Create a QueryPipeline error from an Arrow error with stream context.

pub fn code(&self) -> &'static str

Returns the structured LDB-NNNN error code for this error.

Every DbError variant maps to a stable error code that can be used for programmatic handling, log searching, and metrics.

pub fn is_transient(&self) -> bool

Whether this error is transient (retryable).

Trait Implementations

impl Debug for DbError

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

Formats the value using the given formatter.

impl Display for DbError

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

Formats the value using the given formatter.

impl Error for DbError

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<DataFusionError> for DbError

fn from(source: DataFusionError) -> Self

Converts to this type from the input type.

impl From<DbError> for ApiError

fn from(e: DbError) -> Self

Converts to this type from the input type.

impl From<Error> for DbError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for DbError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ParseError> for DbError

fn from(source: ParseError) -> Self

Converts to this type from the input type.

impl From<StreamingError> for DbError

fn from(source: StreamingError) -> Self

Converts to this type from the input type.