Struct deltalake::datafusion::optimizer::simplify_expressions::simplify_exprs::SimplifyExpressions
source · pub struct SimplifyExpressions {}
Expand description
Optimizer Pass that simplifies LogicalPlan
s by rewriting
Expr
`s evaluating constants and applying algebraic
simplifications
§Introduction
It uses boolean algebra laws to simplify or reduce the number of terms in expressions.
§Example:
Filter: b > 2 AND b > 2
is optimized to
Filter: b > 2
Implementations§
source§impl SimplifyExpressions
impl SimplifyExpressions
pub fn new() -> SimplifyExpressions
Trait Implementations§
source§impl Default for SimplifyExpressions
impl Default for SimplifyExpressions
source§fn default() -> SimplifyExpressions
fn default() -> SimplifyExpressions
Returns the “default value” for a type. Read more
source§impl OptimizerRule for SimplifyExpressions
impl OptimizerRule for SimplifyExpressions
source§fn try_optimize(
&self,
plan: &LogicalPlan,
config: &dyn OptimizerConfig
) -> Result<Option<LogicalPlan>, DataFusionError>
fn try_optimize( &self, plan: &LogicalPlan, config: &dyn OptimizerConfig ) -> Result<Option<LogicalPlan>, DataFusionError>
Try and rewrite
plan
to an optimized form, returning None if the plan cannot be
optimized by this rule.source§fn apply_order(&self) -> Option<ApplyOrder>
fn apply_order(&self) -> Option<ApplyOrder>
How should the rule be applied by the optimizer? See comments on
ApplyOrder
for details. Read moreAuto Trait Implementations§
impl Freeze for SimplifyExpressions
impl RefUnwindSafe for SimplifyExpressions
impl Send for SimplifyExpressions
impl Sync for SimplifyExpressions
impl Unpin for SimplifyExpressions
impl UnwindSafe for SimplifyExpressions
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreCreates a shared type from an unshared type.