Struct ColumnValue 

pub struct ColumnValue {
    pub type_tag: TypeTag,
    pub type_oid: u32,
    pub data: Option<Vec<u8>>,
}

A single column value. Uses raw PostgreSQL binary format bytes for zero-copy efficiency.

Fields

type_tag: TypeTag

Type tag for fast dispatch.

type_oid: u32

PostgreSQL type OID (for arrays, custom types, and disambiguation).

data: Option<Vec<u8>>

Raw PostgreSQL binary format bytes. None represents NULL.

Implementations

impl ColumnValue

pub fn null() -> Self

Create a NULL column value.

pub fn from_pg_binary(type_tag: TypeTag, type_oid: u32, data: Vec<u8>) -> Self

Create a column value from raw PostgreSQL binary data.

pub fn unchanged(type_oid: u32) -> Self

Create a marker for an unchanged TOAST value. Used in UPDATE operations when a large column value was not modified. The type_oid is preserved so the target knows the column’s type.

pub fn is_null(&self) -> bool

Check if this value is NULL.

pub fn is_unchanged(&self) -> bool

Check if this value is an unchanged TOAST marker.

pub fn as_bytes(&self) -> Option<&[u8]>

Get the raw data bytes.

pub fn size_bytes(&self) -> usize

Estimate the size of this value in bytes.

Trait Implementations

impl Clone for ColumnValue

fn clone(&self) -> ColumnValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnValue

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ColumnValue

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ColumnValue

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

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 ColumnValue