Struct datafusion_physical_expr::PhysicalSortExpr

pub struct PhysicalSortExpr {
    pub expr: Arc<dyn PhysicalExpr>,
    pub options: SortOptions,
}

Represents Sort operation for a column in a RecordBatch

Fields

expr: Arc<dyn PhysicalExpr>

Physical expression representing the column to sort

options: SortOptions

Option to specify how the given column should be sorted

Implementations

impl PhysicalSortExpr

pub fn evaluate_to_sort_column(&self, batch: &RecordBatch) -> Result<SortColumn>

evaluate the sort expression into SortColumn that can be passed into arrow sort kernel

pub fn satisfy( &self, requirement: &PhysicalSortRequirement, schema: &Schema ) -> bool

Checks whether this sort expression satisfies the given requirement. If sort options are unspecified in requirement, only expressions are compared for inequality.

pub fn format_list(input: &[PhysicalSortExpr]) -> impl Display + '_

Returns a Displayable list of PhysicalSortExpr.

Trait Implementations

impl Clone for PhysicalSortExpr

fn clone(&self) -> PhysicalSortExpr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PhysicalSortExpr

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

Formats the value using the given formatter.

impl Display for PhysicalSortExpr

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

Formats the value using the given formatter.

impl From<PhysicalSortExpr> for PhysicalSortRequirement

fn from(value: PhysicalSortExpr) -> Self

Converts to this type from the input type.

impl From<PhysicalSortRequirement> for PhysicalSortExpr

fn from(value: PhysicalSortRequirement) -> Self

If options is None, the default sort options ASC, NULLS LAST is used.

The default is picked to be consistent with PostgreSQL: https://www.postgresql.org/docs/current/queries-order.html

impl Hash for PhysicalSortExpr

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 for PhysicalSortExpr

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