Struct datafusion::logical_plan::DFField

pub struct DFField { /* fields omitted */ }

DFField wraps an Arrow field and adds an optional qualifier

Implementations

impl DFField

pub fn new(
    qualifier: Option<&str>,
    name: &str,
    data_type: DataType,
    nullable: bool
) -> Self

Creates a new DFField

pub fn from(field: Field) -> Self

Create an unqualified field from an existing Arrow field

pub fn from_qualified(qualifier: &str, field: Field) -> Self

Create a qualified field from an existing Arrow field

pub fn name(&self) -> &String

Returns an immutable reference to the DFField’s unqualified name

pub fn data_type(&self) -> &DataType

Returns an immutable reference to the DFField’s data-type

pub fn is_nullable(&self) -> bool

Indicates whether this DFField supports null values

pub fn qualified_name(&self) -> String

Returns a string to the DFField’s qualified name

pub fn qualified_column(&self) -> Column

Builds a qualified column based on self

pub fn unqualified_column(&self) -> Column

Builds an unqualified column based on self

pub fn qualifier(&self) -> Option<&String>

Get the optional qualifier

pub fn field(&self) -> &Field

Get the arrow field

pub fn strip_qualifier(self) -> Self

Return field with qualifier stripped

Trait Implementations

impl Clone for DFField

fn clone(&self) -> DFField

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DFField

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

Formats the value using the given formatter.

impl PartialEq<DFField> for DFField

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Eq for DFField

impl StructuralEq for DFField

impl StructuralPartialEq for DFField