Enum Value 

pub enum Value {
    I32(i32),
    I64(i64),
    F64(f64),
    Text(String),
    Bool(bool),
    Bytes(Vec<u8>),
    NullI32,
    NullI64,
    NullF64,
    NullText,
    NullBool,
    NullBytes,
    Timestamptz(DateTime<Utc>),
    NullTimestamptz,
    Date(NaiveDate),
    NullDate,
    Uuid(Uuid),
    NullUuid,
    Numeric(Decimal),
    NullNumeric,
    Placeholder(&'static str),
}

A closed, non-generic sum of every literal value the crate can bind as a query parameter. Deliberately not Box<dyn ToSql>: a plain enum keeps the renderer free of vtable dispatch and lets it stay a single non-generic function no matter how many query shapes exist.

Variants

I32(i32)

I64(i64)

F64(f64)

Text(String)

Bool(bool)

Bytes(Vec<u8>)

NullI32

A NULL of a specific base type, not a single untyped Null: a Postgres bind declares a parameter type even when the value is NULL, and a mismatched one can fail query planning. Each NullX variant lets the execution layer bind Option::<X>::None with the right type.

NullI64

NullF64

NullText

NullBool

NullBytes

Timestamptz(DateTime<Utc>)

NullTimestamptz

Date(NaiveDate)

NullDate

Uuid(Uuid)

NullUuid

Numeric(Decimal)

NullNumeric

Placeholder(&'static str)

A named placeholder in a prepare!{}-built query, not yet resolved to a concrete value. It rides the existing Vec<Value> parameter pipeline: rendering doesn’t care what’s inside a Value, only that there’s one per placeholder position. select::Prepared substitutes real values before binding.

Implementations

impl Value

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

The SQL type this value came from, for the one error that has to name it: a column type enabled in this crate and not in the execution crate. Lives here because the feature-gated variants do.

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<Option<DateTime<Utc>>> for Value

fn from(v: Option<DateTime<Utc>>) -> 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<NaiveDate>> for Value

fn from(v: Option<NaiveDate>) -> 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<u8>>> for Value

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Value