Enum IsolationLevel 

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

Transaction isolation level.

Defines the degree to which one transaction must be isolated from resource or data modifications made by other concurrent transactions.

Variants

ReadUncommitted

Read uncommitted: Transactions can see uncommitted changes from others. This is the lowest isolation level, providing minimal guarantees. Use with caution - dirty reads, non-repeatable reads, and phantoms possible.

ReadCommitted

Read committed: Transactions only see committed changes from others. This is the default for PostgreSQL. Prevents dirty reads but allows non-repeatable reads and phantoms.

RepeatableRead

Repeatable read: Transactions see a consistent snapshot of the database. Prevents dirty reads and non-repeatable reads, but phantoms are possible in some databases (though not in PostgreSQL).

Serializable

Serializable: Transactions appear to execute sequentially. The highest isolation level, providing complete isolation but potentially requiring retries due to serialization failures.

Implementations

impl IsolationLevel

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

Get the SQL syntax for this isolation level.

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 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 PartialEq for IsolationLevel

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

impl Eq for IsolationLevel

impl StructuralPartialEq for IsolationLevel