Struct datafusion_python::datafusion_expr::logical_plan::EmptyRelation

pub struct EmptyRelation {
    pub produce_one_row: bool,
    pub schema: Arc<DFSchema>,
}

Produces no rows: An empty relation with an empty schema

Fields

produce_one_row: bool

Whether to produce a placeholder row

schema: Arc<DFSchema>

The schema description of the output

Trait Implementations

impl Clone for EmptyRelation

fn clone(&self) -> EmptyRelation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for EmptyRelation

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

Formats the value using the given formatter.

impl From<EmptyRelation> for PyEmptyRelation

fn from(empty: EmptyRelation) -> PyEmptyRelation

Converts to this type from the input type.

impl From<PyEmptyRelation> for EmptyRelation

fn from(empty_relation: PyEmptyRelation) -> Self

Converts to this type from the input type.

impl Hash for EmptyRelation

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for EmptyRelation

fn eq(&self, other: &EmptyRelation) -> 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 Eq for EmptyRelation

impl StructuralPartialEq for EmptyRelation