Struct InHashSetExpression 

pub struct InHashSetExpression {
    pub token: Token,
    pub column: Box<Expression>,
    pub values: CompactArc<ValueSet>,
    pub not: bool,
}

Pre-computed IN expression with HashSet for O(1) lookup

This is used by the semi-join optimization to avoid rebuilding the HashSet on every row during parallel filtering. Arc enables cheap cloning when the expression is cloned for parallel execution.

Fields

token: Token

column: Box<Expression>

The column/expression to check

values: CompactArc<ValueSet>

Pre-computed ValueSet for O(1) lookup - Arc for cheap parallel cloning

not: bool

Whether this is NOT IN

Trait Implementations

impl Clone for InHashSetExpression

fn clone(&self) -> InHashSetExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InHashSetExpression

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

Formats the value using the given formatter.

impl Display for InHashSetExpression

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

Formats the value using the given formatter.

impl PartialEq for InHashSetExpression

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.