Struct MissingColumn 

pub struct MissingColumn {
    pub name: String,
    pub data_type: DataType,
    pub nullable: bool,
}

Nullable logical column absent from the physical Parquet file schema.

Missing columns are explicit source facts. They are materialized as typed null GPU columns after the file/chunk row count is known and before source-local filters or projections run.

Fields

name: String

Column name exposed to native expressions.

data_type: DataType

Arrow type of the typed null column.

nullable: bool

Whether the logical table column is nullable.

Implementations

impl MissingColumn

pub fn new(name: impl Into<String>, data_type: DataType, nullable: bool) -> Self

Declares a missing logical column; source validation checks whether typed-null materialization is permitted by its nullability.

Trait Implementations

impl Clone for MissingColumn

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 MissingColumn

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

Formats the value using the given formatter.

impl Eq for MissingColumn

impl PartialEq for MissingColumn

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MissingColumn