Struct ColumnLineageEdge 

pub struct ColumnLineageEdge {
    pub source: ColumnRead,
    pub target: ColumnTarget,
    pub kind: ColumnLineageKind,
}

A column-level lineage edge: data from source contributes to target. Emitted for both relation-target statements (INSERT / UPDATE / MERGE / CTAS / CREATE VIEW, target = ColumnTarget::Relation) and bare SELECT (target = ColumnTarget::QueryOutput).

One edge per (source, target) pair: SELECT a + b FROM t1 emits two edges, from t1.a and t1.b to the same query-output target, each tagged Transformation.

Statements that physically move data emit collapsed end-to-end lineage — INSERT INTO t1 (col) SELECT b FROM t2 emits t2.b → t1.col directly, with no intermediate query-output entry.

Fields

source: ColumnRead

The column the lineage edge flows from, paired with the resolver’s ResolutionKind in that placement. source.reference is the inner (post-collapse) real-table reference; source.resolution follows that inner reference’s classification rather than the outer synthetic step’s.

target: ColumnTarget

kind: ColumnLineageKind

Trait Implementations

impl Clone for ColumnLineageEdge

fn clone(&self) -> ColumnLineageEdge

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnLineageEdge

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

Formats the value using the given formatter.

impl Eq for ColumnLineageEdge

impl Hash for ColumnLineageEdge

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ColumnLineageEdge

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ColumnLineageEdge