Struct ColumnWrite 

pub struct ColumnWrite {
    pub reference: ColumnReference,
    pub resolution: ResolutionKind,
}

One write-side occurrence of a ColumnReference — a written column — pairing the identity with how the resolver resolved it against the target (ResolutionKind). The write-role counterpart of ColumnRead, kept a distinct type so a read can’t be passed where a write is meant.

resolution is the column’s catalog match against its write target: Cataloged when the column is in the target’s catalog column list, else Inferred (catalog-free, the target’s columns aren’t known, the column isn’t listed, or a freshly created / altered relation).

The owning table is pinned whenever the statement names the sink — every INSERT / DDL write, a qualified SET t2.col, and an unqualified SET with one writable relation. Only an unqualified SET among several writable relations (a multi-table UPDATE t1 JOIN t2 SET col = …) is inferred, with the same rules as a read: a sole candidate pins its owner, several candidates surface Ambiguous and none Unresolved — table: None, the column still named, exactly like an unattributed ColumnRead. An unattributed write contributes no table-level write.

Fields

reference: ColumnReference

resolution: ResolutionKind

Trait Implementations

impl Clone for ColumnWrite

fn clone(&self) -> ColumnWrite

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnWrite

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

Formats the value using the given formatter.

impl Eq for ColumnWrite

impl Hash for ColumnWrite

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 ColumnWrite

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