Struct Limit

pub struct Limit {
    pub skip: Option<Box<Expr>>,
    pub fetch: Option<Box<Expr>>,
    pub input: Arc<LogicalPlan>,
}

Produces the first n tuples from its input and discards the rest.

Fields

skip: Option<Box<Expr>>

Number of rows to skip before fetch

fetch: Option<Box<Expr>>

Maximum number of rows to fetch, None means fetching all rows

input: Arc<LogicalPlan>

The logical plan

Implementations

impl Limit

pub fn get_skip_type(&self) -> Result<SkipType>

Get the skip type from the limit plan.

pub fn get_fetch_type(&self) -> Result<FetchType>

Get the fetch type from the limit plan.

Trait Implementations

impl Clone for Limit

fn clone(&self) -> Limit

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Limit

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

Formats the value using the given formatter.

impl Hash for Limit

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 Limit

fn eq(&self, other: &Limit) -> 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 PartialOrd for Limit

fn partial_cmp(&self, other: &Limit) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for Limit

impl StructuralPartialEq for Limit