Enum IsolationLevel 

pub enum IsolationLevel {
    ReadUncommitted,
    ReadCommitted,
    RepeatableRead,
    Serializable,
}

v7.38 轴 4 — PG-standard isolation levels. SPG accepts all four at parse time and tracks the selected value on the engine. The actual semantic differentiation (REPEATABLE READ snapshot, SERIALIZABLE SSI) lands in the v7.38 isolation framework train; today every level reads as effective READ COMMITTED (which is also how PG treats READ UNCOMMITTED — it silently upgrades to READ COMMITTED). Default = ReadCommitted.

Variants

ReadUncommitted

ReadCommitted

RepeatableRead

Serializable

Implementations

impl IsolationLevel

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

Canonical PG-style display name, as SHOW transaction_isolation would return it. v7.39 (round 770, F31 tranche 6 #154) — PG KEEPS the “read uncommitted” label (measured: BEGIN ISOLATION LEVEL READ UNCOMMITTED; SHOW transaction_isolation answers read uncommitted) and only BEHAVES as read committed; the old fold renamed the label too.

Trait Implementations

impl Clone for IsolationLevel

fn clone(&self) -> IsolationLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IsolationLevel

impl Debug for IsolationLevel

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

Formats the value using the given formatter.

impl Default for IsolationLevel

fn default() -> IsolationLevel

Returns the “default value” for a type.

impl Display for IsolationLevel

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

Formats the value using the given formatter.

impl Eq for IsolationLevel

impl PartialEq for IsolationLevel

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for IsolationLevel