Struct datafusion_expr::Filter

pub struct Filter { /* private fields */ }

Filters rows from its input that do not match an expression (essentially a WHERE clause with a predicate expression).

Semantically, <predicate> is evaluated for each row of the input; If the value of <predicate> is true, the input row is passed to the output. If the value of <predicate> is false, the row is discarded.

Implementations

impl Filter

pub fn try_new(predicate: Expr, input: Arc<LogicalPlan>) -> Result<Self>

Create a new filter operator.

pub fn try_from_plan(plan: &LogicalPlan) -> Result<&Filter>

pub fn predicate(&self) -> &Expr

Access the filter predicate expression

pub fn input(&self) -> &Arc<LogicalPlan>

Access the filter input plan

Trait Implementations

impl Clone for Filter

fn clone(&self) -> Filter

Returns a copy of the value.

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

Performs copy-assignment from source.