Enum UpsertExpr 

pub enum UpsertExpr {
    Value(Value),
    Excluded(String),
}

Expression permitted on the RHS of SET col = <expr> inside ON CONFLICT ... DO UPDATE.

Intentionally restricted: callers either want a literal value or an EXCLUDED.col back-reference. Arbitrary scalar expressions would punch through the kernel’s determinism boundary and are out of scope for v0.6.0.

Variants

Value(Value)

A plain literal or parameter placeholder.

Excluded(String)

EXCLUDED.<col> — pick the value from the would-be-inserted row.

Trait Implementations

impl Clone for UpsertExpr

fn clone(&self) -> UpsertExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UpsertExpr

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

Formats the value using the given formatter.

impl PartialEq for UpsertExpr

fn eq(&self, other: &UpsertExpr) -> 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 Eq for UpsertExpr

impl StructuralPartialEq for UpsertExpr