Enum Value 

pub enum Value {
    Null,
    Bool(bool),
    I32(i32),
    I64(i64),
    F64(f64),
    Decimal(Decimal),
    DateTime(NaiveDateTime),
    Uuid(Uuid),
    Json(Value),
    Hstore(BTreeMap<String, Option<String>>),
    Geometry(String),
    Geography(String),
    Vector(Vec<f32>),
    String(String),
    Bytes(Vec<u8>),
    Array(Vec<Value>),
    Array2D(Vec<Vec<Value>>),
    Enum {
        value: String,
        type_name: String,
    },
    Composite {
        type_name: String,
        fields: Vec<Value>,
    },
}

Database value type.

Implements custom JSON serialization for cross-language compatibility:

• Decimal -> string (avoid precision loss)
• DateTime -> RFC3339 string
• Uuid -> hyphenated lowercase string
• Bytes -> base64 string

Variants

Null

NULL value.

Bool(bool)

Boolean.

I32(i32)

32-bit integer.

I64(i64)

64-bit integer.

F64(f64)

64-bit float.

Decimal(Decimal)

Decimal number with arbitrary precision.

DateTime(NaiveDateTime)

Date and time (without timezone).

Uuid(Uuid)

UUID.

Json(Value)

JSON value.

Hstore(BTreeMap<String, Option<String>>)

PostgreSQL hstore key/value map.

Geometry(String)

PostgreSQL PostGIS geometry value.

Geography(String)

PostgreSQL PostGIS geography value.

Vector(Vec<f32>)

PostgreSQL pgvector dense embedding vector.

String(String)

String.

Bytes(Vec<u8>)

Byte array.

Array(Vec<Value>)

Array of values (PostgreSQL native arrays).

Array2D(Vec<Vec<Value>>)

2D array of values (PostgreSQL multi-dimensional arrays).

Enum

A database enum value with its PostgreSQL type name.

Carries the variant string (e.g. "ADMIN") together with the lowercase PG type name (e.g. "role") so that the PostgreSQL dialect can emit the required explicit cast ($1::role). All other backends treat this identically to Value::String.

Fields

value: String

The enum variant string sent to / received from the DB.

type_name: String

Lowercase PostgreSQL type name (e.g. "role", "poststatus").

Composite

A PostgreSQL native composite type value.

Carries the lowercase PG type name (e.g. "championstats") together with the field values in their declared order. The PostgreSQL dialect emits the required explicit cast ($1::championstats) and the connector encodes the fields as a record literal (("0","0",…)). Backends that store composites as JSON never receive this variant.

Fields

type_name: String

Lowercase PostgreSQL type name (e.g. "championstats").

fields: Vec<Value>

Field values in the composite type’s declared order.

Implementations

impl Value

pub fn to_json_plain(&self) -> Value

Convert this value into the plain JSON shape used on transport/wire paths.

Unlike the serde representation of Value itself, this helper intentionally mirrors the historic untagged encoding used by the engine and generated raw-query helpers.

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<'de> Deserialize<'de> for Value

Deserializes a Value from the tagged serde representation emitted by Serialize for Value.

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<&str> for Value

fn from(v: &str) -> Self

Converts to this type from the input type.

impl From<BTreeMap<String, Option<String>>> for Value

fn from(v: BTreeMap<String, Option<String>>) -> 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<Geography> for Value

fn from(v: Geography) -> Self

Converts to this type from the input type.

impl From<Geometry> for Value

fn from(v: Geometry) -> Self

Converts to this type from the input type.

impl From<NaiveDateTime> for Value

fn from(v: NaiveDateTime) -> Self

Converts to this type from the input type.

impl From<Option<&str>> for Value

fn from(v: Option<&str>) -> Self

Converts to this type from the input type.

impl From<Option<BTreeMap<String, Option<String>>>> for Value

fn from(v: Option<BTreeMap<String, Option<String>>>) -> Self

Converts to this type from the input type.

impl From<Option<Decimal>> for Value

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

Converts to this type from the input type.

impl From<Option<Geography>> for Value

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

Converts to this type from the input type.

impl From<Option<Geometry>> for Value

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

Converts to this type from the input type.

impl From<Option<NaiveDateTime>> for Value

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

Converts to this type from the input type.

impl From<Option<String>> for Value

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

Converts to this type from the input type.

impl From<Option<Uuid>> for Value

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

Converts to this type from the input type.

impl From<Option<Vec<f32>>> for Value

fn from(v: Option<Vec<f32>>) -> Self

Converts to this type from the input type.

impl From<Option<bool>> for Value

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

Converts to this type from the input type.

impl From<Option<f64>> for Value

fn from(v: Option<f64>) -> Self

Converts to this type from the input type.

impl From<Option<i32>> for Value

fn from(v: Option<i32>) -> Self

Converts to this type from the input type.

impl From<Option<i64>> for Value

fn from(v: Option<i64>) -> 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<BTreeMap<String, Option<String>>>> for Value

fn from(v: Vec<BTreeMap<String, Option<String>>>) -> Self

Converts to this type from the input type.

impl From<Vec<Decimal>> for Value

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

Converts to this type from the input type.

impl From<Vec<Geography>> for Value

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

Converts to this type from the input type.

impl From<Vec<Geometry>> for Value

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

Converts to this type from the input type.

impl From<Vec<NaiveDateTime>> for Value

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

Converts to this type from the input type.

impl From<Vec<String>> for Value

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

Converts to this type from the input type.

impl From<Vec<Uuid>> for Value

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

Converts to this type from the input type.

impl From<Vec<Value>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<BTreeMap<String, Option<String>>>>> for Value

fn from(v: Vec<Vec<BTreeMap<String, Option<String>>>>) -> Self

Converts to this type from the input type.

impl From<Vec<Vec<Decimal>>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<Geography>>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<Geometry>>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<NaiveDateTime>>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<String>>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<Uuid>>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<Value>>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<bool>>> for Value

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

Converts to this type from the input type.

impl From<Vec<Vec<f64>>> for Value

fn from(v: Vec<Vec<f64>>) -> Self

Converts to this type from the input type.

impl From<Vec<Vec<i32>>> for Value

fn from(v: Vec<Vec<i32>>) -> Self

Converts to this type from the input type.

impl From<Vec<Vec<i64>>> for Value

fn from(v: Vec<Vec<i64>>) -> Self

Converts to this type from the input type.

impl From<Vec<bool>> for Value

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

Converts to this type from the input type.

impl From<Vec<f32>> for Value

fn from(v: Vec<f32>) -> Self

Converts to this type from the input type.

impl From<Vec<f64>> for Value

fn from(v: Vec<f64>) -> Self

Converts to this type from the input type.

impl From<Vec<i32>> for Value

fn from(v: Vec<i32>) -> Self

Converts to this type from the input type.

impl From<Vec<i64>> for Value

fn from(v: Vec<i64>) -> 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<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 PartialEq for Value

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