Struct SubqueryDef 

pub struct SubqueryDef {
    pub id: usize,
    pub subquery_type: SubqueryType,
    pub compare_var: Option<Var>,
    pub result_var: Option<Var>,
    pub outer_refs: Vec<Var>,
    pub is_correlated: bool,
}

A subquery definition

Fields

id: usize

Unique identifier for this subquery

subquery_type: SubqueryType

Type of subquery

compare_var: Option<Var>

Variable to compare against (for IN, ANY, ALL)

result_var: Option<Var>

Result variable name (for scalar subqueries)

outer_refs: Vec<Var>

Variables referenced from outer query (for correlation detection)

is_correlated: bool

Whether this subquery is correlated (references outer variables)

Implementations

impl SubqueryDef

pub fn scalar(id: usize, result_var: Var) -> Self

Create a scalar subquery

pub fn exists(id: usize, negated: bool) -> Self

Create an EXISTS subquery

pub fn in_list(id: usize, compare_var: Var, negated: bool) -> Self

Create an IN subquery

pub fn with_outer_refs(self, refs: Vec<Var>) -> Self

Mark as correlated with outer references

Trait Implementations

impl Clone for SubqueryDef

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SubqueryDef

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

Formats the value using the given formatter.