Enum Datum 

pub enum Datum {
    Null,
    Bool(bool),
    Int2(i16),
    Int4(i32),
    Int8(i64),
    Float4(f32),
    Float8(f64),
    Oid(Oid),
    Text(String),
    Bytea(Vec<u8>),
    Uuid([u8; 16]),
    Date(i32),
    Timestamp(i64),
    TimestampTz(i64),
}

One value. Null has no type.

Variants

Null

SQL NULL.

Bool(bool)

bool.

Int2(i16)

int2.

Int4(i32)

int4.

Int8(i64)

int8.

Float4(f32)

float4.

Float8(f64)

float8.

Oid(Oid)

oid.

Text(String)

text.

Bytea(Vec<u8>)

bytea.

Uuid([u8; 16])

uuid, the 16 bytes in the order of the text form.

Date(i32)

date, the days since 1 January 2000. i32::MAX is infinity and i32::MIN is -infinity.

Timestamp(i64)

timestamp, the microseconds since 1 January 2000. i64::MAX is infinity and i64::MIN is -infinity.

TimestampTz(i64)

timestamptz, the microseconds since 1 January 2000 UTC, with the infinities of timestamp.

Implementations

impl Datum

pub fn type_id(&self) -> Option<TypeId>

The type of the value, or None for Null.

pub fn is_null(&self) -> bool

True for Null.

pub fn encode(&self) -> Option<Vec<u8>>

The storage form, or None for Null.

pub fn decode(ty: TypeId, bytes: Option<&[u8]>) -> Result<Datum>

The value of type ty in the storage form bytes. None is Null. A storage form of the wrong length, a bool that is not 0 or 1, or text that is not UTF-8 gives SQLSTATE XX001, because only the engine writes the storage form. A type that M1 does not store gives XX000.

Trait Implementations

impl Clone for Datum

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Datum

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

Formats the value using the given formatter.

impl PartialEq for Datum

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Datum