Enum UserDefinedTypeStorage 

pub enum UserDefinedTypeStorage {
    Plain,
    External,
    Extended,
    Main,
}

Storage specification for PostgreSQL user-defined base types.

Specifies the storage strategy for values of the data type:

• plain: Prevents compression and out-of-line storage (for fixed-length types)
• external: Allows out-of-line storage but not compression
• extended: Allows both compression and out-of-line storage (default for most types)
• main: Allows compression but discourages out-of-line storage

PostgreSQL Documentation

See: https://www.postgresql.org/docs/current/sql-createtype.html

Examples

CREATE TYPE mytype (
    INPUT = in_func,
    OUTPUT = out_func,
    STORAGE = plain
);

Variants

Plain

No compression or out-of-line storage: STORAGE = plain

External

Out-of-line storage allowed, no compression: STORAGE = external

Extended

Both compression and out-of-line storage allowed: STORAGE = extended

Main

Compression allowed, out-of-line discouraged: STORAGE = main

Trait Implementations

impl Clone for UserDefinedTypeStorage

fn clone(&self) -> UserDefinedTypeStorage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UserDefinedTypeStorage

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

Formats the value using the given formatter.

impl Display for UserDefinedTypeStorage

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

Formats the value using the given formatter.

impl Hash for UserDefinedTypeStorage

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for UserDefinedTypeStorage

fn cmp(&self, other: &UserDefinedTypeStorage) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for UserDefinedTypeStorage

fn eq(&self, other: &UserDefinedTypeStorage) -> 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 PartialOrd for UserDefinedTypeStorage

fn partial_cmp(&self, other: &UserDefinedTypeStorage) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Visit for UserDefinedTypeStorage

fn visit<V: Visitor>(&self, visitor: &mut V) -> ControlFlow<V::Break>

Visit this node with the provided Visitor.

impl VisitMut for UserDefinedTypeStorage

fn visit<V: VisitorMut>(&mut self, visitor: &mut V) -> ControlFlow<V::Break>

Mutably visit this node with the provided VisitorMut.

impl Copy for UserDefinedTypeStorage

impl Eq for UserDefinedTypeStorage

impl StructuralPartialEq for UserDefinedTypeStorage