Struct datafusion_expr::expr::GetIndexedField

pub struct GetIndexedField {
    pub expr: Box<Expr>,
    pub key: ScalarValue,
}

Returns the field of a [arrow::array::ListArray] or [arrow::array::StructArray] by key

Fields

expr: Box<Expr>

the expression to take the field from

key: ScalarValue

The name of the field to take

Implementations

impl GetIndexedField

pub fn new(expr: Box<Expr>, key: ScalarValue) -> Self

Create a new GetIndexedField expression

Trait Implementations

impl Clone for GetIndexedField

fn clone(&self) -> GetIndexedField

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Hash for GetIndexedField

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

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<GetIndexedField> for GetIndexedField

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for GetIndexedField

impl StructuralEq for GetIndexedField

impl StructuralPartialEq for GetIndexedField