Enum ReturningVariant 

pub enum ReturningVariant {
    AllOld,
    ModifiedOld,
    AllNew,
    ModifiedNew,
}

A PartiQL RETURNING clause variant: the cross product of ALL/MODIFIED and OLD/NEW, as in RETURNING MODIFIED NEW *.

All four are valid on UPDATE; only AllOld is valid on DELETE (the executor rejects the others). The parser recognises any well-formed variant and defers semantic validity to the executor, so the rejection can carry DynamoDB’s exact ValidationException message.

Variants

AllOld

ModifiedOld

AllNew

ModifiedNew

Implementations

impl ReturningVariant

pub fn as_sql(self) -> &'static str

The clause keywords as they appear after RETURNING (e.g. ALL OLD), used to reconstruct DynamoDB’s error message for a rejected variant.

Trait Implementations

impl Clone for ReturningVariant

fn clone(&self) -> ReturningVariant

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ReturningVariant

impl Debug for ReturningVariant

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

Formats the value using the given formatter.

impl Eq for ReturningVariant

impl PartialEq for ReturningVariant

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ReturningVariant