Struct ColumnOperation 

pub struct ColumnOperation {
    pub statement_kind: StatementKind,
    pub reads: Vec<ColumnRead>,
    pub writes: Vec<ColumnWrite>,
    pub lineage: Vec<ColumnLineageEdge>,
    pub diagnostics: Vec<ColumnLevelDiagnostic>,
}

Column-level operations performed by a single SQL statement.

Mirrors TableOperation with the same three surfaces — reads, writes, lineage — at column granularity.

Fields

statement_kind: StatementKind

reads: Vec<ColumnRead>

Columns read by the statement. Occurrence-based: a column referenced more than once appears more than once (e.g. SELECT a FROM t WHERE a > 0 yields t.a twice). Each entry pairs the ColumnReference identity with its ResolutionKind. In source order — by each read’s written token span (reference.name.span), a deterministic function of the SQL rather than the internal traversal. References that share a token (a USING fan-in) keep a stable relative order. For the distinct identity set, dedup reads.iter().map(|r| &r.reference) via a HashSet (or, catalog-free, by ColumnReference::identity_key to fold case-equivalent spellings).

writes: Vec<ColumnWrite>

Columns written by the statement, in source (column-list) order. Occurrence-based like reads. Each ColumnWrite pairs the identity with the column’s catalog match against its target — Cataloged when the column is in the target’s catalog columns, else Inferred (catalog-free, target columns unknown, or a freshly created / altered relation).

lineage: Vec<ColumnLineageEdge>

Lineage edges. Statements that physically move data emit collapsed end-to-end edges (source → ColumnTarget::Relation); a bare SELECT emits source → ColumnTarget::QueryOutput edges. In source order of the contributing source column (by its written token span); occurrence / multiplicity is preserved.

diagnostics: Vec<ColumnLevelDiagnostic>

Column-level diagnostics: wildcard suppression plus the UnsupportedStatement projection inherited from table granularity. Per-reference resolution outcomes surface on reads[i].resolution instead.

Trait Implementations

impl Clone for ColumnOperation

fn clone(&self) -> ColumnOperation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnOperation

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

Formats the value using the given formatter.

impl Eq for ColumnOperation

impl PartialEq for ColumnOperation

fn eq(&self, other: &ColumnOperation) -> 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 ColumnOperation