Enum LineageError 

pub enum LineageError {
    Parse(String),
    MultiStatement,
    UnresolvedColumn {
        column: String,
        reason: String,
    },
    UnknownTable {
        table: String,
    },
    DepthLimitExceeded,
    CircularReference {
        cte: String,
    },
    ColumnCountMismatch {
        target: String,
        expected: usize,
        found: usize,
    },
}

Failure raised while extracting column lineage from SQL.

Resolution is fail-closed: any projected column that cannot be bound to a concrete source aborts the whole extraction (see LineageError::UnresolvedColumn).

Variants

Parse(String)

The SQL string could not be parsed by the selected dialect.

MultiStatement

More than one statement was supplied; only single statements are analyzed.

UnresolvedColumn

A projected column could not be resolved to a concrete source column.

Fields

column: String

The column reference that could not be resolved.

reason: String

Why it could not be resolved (e.g. ambiguous, no catalog).

UnknownTable

A referenced table is not present in the supplied schema catalog.

Fields

table: String

The table name that could not be found.

DepthLimitExceeded

Query nesting exceeded the recursion-depth guard.

CircularReference

A CTE references itself directly or transitively; lineage is undefined.

Fields

cte: String

The CTE name that re-entered resolution.

ColumnCountMismatch

A write target’s column list does not match its source projection.

Fields

target: String

The write target table name.

expected: usize

Number of explicit target columns.

found: usize

Number of source-projection columns.

Trait Implementations

impl Clone for LineageError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LineageError

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

Formats the value using the given formatter.

impl Display for LineageError

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

Formats the value using the given formatter.

impl Eq for LineageError

impl Error for LineageError

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 PartialEq for LineageError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LineageError