Struct datafusion_optimizer::simplify_expressions::SimplifyExpressions

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pub struct SimplifyExpressions {}

Expand description

Optimizer Pass that simplifies LogicalPlans 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

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impl SimplifyExpressions

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pub fn new() -> Self

Trait Implementations

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impl Default for SimplifyExpressions

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fn default() -> SimplifyExpressions

Returns the “default value” for a type. Read more

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impl OptimizerRule for SimplifyExpressions

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fn name(&self) -> &str

A human readable name for this optimizer rule

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fn optimize(
 &self,
 plan: &LogicalPlan,
 optimizer_config: &OptimizerConfig
) -> Result<LogicalPlan>

Rewrite plan to an optimized form

Auto Trait Implementations

impl RefUnwindSafe for SimplifyExpressions

impl Send for SimplifyExpressions

impl Sync for SimplifyExpressions

impl Unpin for SimplifyExpressions

impl UnwindSafe for SimplifyExpressions

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn vzip(self) -> V

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Struct datafusion_optimizer::simplify_expressions::SimplifyExpressions

Introduction

Example:

Implementations

impl SimplifyExpressions

pub fn new() -> Self

Trait Implementations

impl Default for SimplifyExpressions

fn default() -> SimplifyExpressions

impl OptimizerRule for SimplifyExpressions

fn name(&self) -> &str

fn optimize(
    &self,
    plan: &LogicalPlan,
    optimizer_config: &OptimizerConfig
) -> Result<LogicalPlan>

Auto Trait Implementations

impl RefUnwindSafe for SimplifyExpressions

impl Send for SimplifyExpressions

impl Sync for SimplifyExpressions

impl Unpin for SimplifyExpressions

impl UnwindSafe for SimplifyExpressions

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where
U: From<T>,

fn into(self) -> U

impl<T> Same<T> for T

type Output = T

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn vzip(self) -> V

impl<T> Allocation for T where
T: RefUnwindSafe + Send + Sync,

Struct datafusion_optimizer::simplify_expressions::SimplifyExpressions

Implementations

impl SimplifyExpressions

pub fn new() -> Self

Trait Implementations

impl Default for SimplifyExpressions

fn default() -> SimplifyExpressions

impl OptimizerRule for SimplifyExpressions

fn name(&self) -> &str

fn optimize( &self, plan: &LogicalPlan, optimizer_config: &OptimizerConfig) -> Result<LogicalPlan>

Auto Trait Implementations

impl RefUnwindSafe for SimplifyExpressions

impl Send for SimplifyExpressions

impl Sync for SimplifyExpressions

impl Unpin for SimplifyExpressions

impl UnwindSafe for SimplifyExpressions

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> Same<T> for T

type Output = T

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> Allocation for T where T: RefUnwindSafe + Send + Sync,

fn optimize(
&self,
plan: &LogicalPlan,
optimizer_config: &OptimizerConfig
) -> Result<LogicalPlan>

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

impl<T> Allocation for T where
T: RefUnwindSafe + Send + Sync,