Enum datafusion_expr::expr::GetFieldAccess

pub enum GetFieldAccess {
    NamedStructField {
        name: ScalarValue,
    },
    ListIndex {
        key: Box<Expr>,
    },
    ListRange {
        start: Box<Expr>,
        stop: Box<Expr>,
    },
}

Access a sub field of a nested type, such as Field or List

Variants

NamedStructField

Fields

name: ScalarValue

Named field, for example struct["name"]

ListIndex

Fields

key: Box<Expr>

Single list index, for example: list[i]

ListRange

Fields

start: Box<Expr>

stop: Box<Expr>

List range, for example list[i:j]

Trait Implementations

impl Clone for GetFieldAccess

fn clone(&self) -> GetFieldAccess

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GetFieldAccess

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

Formats the value using the given formatter.

impl Hash for GetFieldAccess

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<GetFieldAccess> for GetFieldAccess

fn eq(&self, other: &GetFieldAccess) -> 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 GetFieldAccess

impl StructuralEq for GetFieldAccess

impl StructuralPartialEq for GetFieldAccess