Struct ColumnReference 

pub struct ColumnReference {
    pub name: String,
    pub plan_id: Option<i64>,
    pub is_metadata_column: bool,
}

pyspark.sql.connect.expressions.ColumnReference Represents a reference to a column by name (unresolved attribute).

Fields

name: String

The column name / unparsed identifier.

plan_id: Option<i64>

Plan id this attribute is bound to. None for a free col(...); set only when the column is resolved against a specific DataFrame (mirrors ColumnReference._plan_id).

is_metadata_column: bool

Whether this references a metadata column (mirrors DataFrame.metadataColumn). false for a normal col(...).

Implementations

impl ColumnReference

pub fn new(name: impl Into<String>) -> Self

pub fn with_plan_id(self, plan_id: i64) -> Self

Bind this attribute to a DataFrame plan id.

pub fn metadata(self) -> Self

Mark this reference as a metadata column (mirrors DataFrame.metadataColumn).

pub fn to_proto(&self) -> Expression

Trait Implementations

impl Clone for ColumnReference

fn clone(&self) -> ColumnReference

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnReference

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

Formats the value using the given formatter.

impl Eq for ColumnReference

impl PartialEq for ColumnReference

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ColumnReference