Enum Value 

pub enum Value {
    Null,
    Bool(bool),
    Int(i64),
    Float(f64),
    Decimal(Decimal),
    Text(String),
    Bytes(Vec<u8>),
    Uuid(Uuid),
    Date(NaiveDate),
    Time(NaiveTime),
    Timestamp(DateTime<Utc>),
    Json(Value),
}

A bindable, backend-neutral value.

Values are always sent to the database as bind parameters, never interpolated into query text.

Backends without a native type for a variant store a canonical text form (see BACKENDS.md); DbType::from_value accepts both the native and the text form, so decoding does not depend on the backend.

Value serializes (untagged) for JSON output of dynamic rows. It does not deserialize: an untagged Text and Timestamp would be ambiguous.

Variants

Null

SQL NULL / missing value.

Bool(bool)

Boolean.

Int(i64)

64-bit signed integer.

Float(f64)

64-bit float.

Decimal(Decimal)

Exact decimal.

Text(String)

UTF-8 text.

Bytes(Vec<u8>)

Raw bytes.

Uuid(Uuid)

UUID.

Date(NaiveDate)

Calendar date.

Time(NaiveTime)

Time of day.

Timestamp(DateTime<Utc>)

Instant in UTC.

Json(Value)

Structured JSON document.

Implementations

impl Value

pub fn is_null(&self) -> bool

Whether this is Value::Null.

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

Short name of the variant, for decode error messages.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl From<&str> for Value

fn from(v: &str) -> Self

Converts to this type from the input type.

impl From<DateTime<Utc>> for Value

fn from(v: DateTime<Utc>) -> Self

Converts to this type from the input type.

impl From<Decimal> for Value

fn from(v: Decimal) -> Self

Converts to this type from the input type.

impl From<NaiveDate> for Value

fn from(v: NaiveDate) -> Self

Converts to this type from the input type.

impl From<NaiveTime> for Value

fn from(v: NaiveTime) -> Self

Converts to this type from the input type.

impl<T: Into<Value>> From<Option<T>> for Value

fn from(v: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(v: String) -> Self

Converts to this type from the input type.

impl From<Uuid> for Value

fn from(v: Uuid) -> Self

Converts to this type from the input type.

impl From<Value> for Value

fn from(v: Value) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(v: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(v: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(v: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(v: f64) -> Self

Converts to this type from the input type.

impl From<i8> for Value

fn from(v: i8) -> Self

Converts to this type from the input type.

impl From<i16> for Value

fn from(v: i16) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(v: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(v: i64) -> Self

Converts to this type from the input type.

impl From<u8> for Value

fn from(v: u8) -> Self

Converts to this type from the input type.

impl From<u16> for Value

fn from(v: u16) -> Self

Converts to this type from the input type.

impl From<u32> for Value

fn from(v: u32) -> Self

Converts to this type from the input type.

impl PartialEq for Value

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Value

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Value