Struct datafusion_optimizer::eliminate_limit::EliminateLimit

pub struct EliminateLimit;

Optimization rule that eliminate LIMIT 0 or useless LIMIT(skip:0, fetch:None). It can cooperate with propagate_empty_relation and limit_push_down.

Implementations

impl EliminateLimit

pub fn new() -> Self

Trait Implementations

impl Default for EliminateLimit

fn default() -> EliminateLimit

Returns the “default value” for a type.

impl OptimizerRule for EliminateLimit

fn try_optimize( &self, plan: &LogicalPlan, _config: &dyn OptimizerConfig ) -> Result<Option<LogicalPlan>>

Try and rewrite plan to an optimized form, returning None if the plan cannot be optimized by this rule.

fn name(&self) -> &str

A human readable name for this optimizer rule

fn apply_order(&self) -> Option<ApplyOrder>

How should the rule be applied by the optimizer? See comments on ApplyOrder for details.