Enum Volatility 

pub enum Volatility {
    Immutable,
    Stable,
    Volatile,
}

Function volatility category

Variants

Immutable

Function always returns same result for same arguments

Stable

Function returns same result within a single query

Volatile

Function may return different results even within same query

Implementations

impl Volatility

pub fn parse(s: &str) -> Option<Self>

Parse volatility from PostgreSQL string

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

Get SQL keyword for this volatility

Trait Implementations

impl Clone for Volatility

fn clone(&self) -> Volatility

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Volatility

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

Formats the value using the given formatter.

impl Default for Volatility

fn default() -> Volatility

Returns the “default value” for a type.

impl PartialEq for Volatility

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

impl Eq for Volatility

impl StructuralPartialEq for Volatility