Struct ExpressionLifter 

pub struct ExpressionLifter { /* private fields */ }

Expression lifter that identifies and lifts non-supported WHERE expressions to CTEs

Implementations

impl ExpressionLifter

pub fn new() -> Self

Create a new expression lifter

pub fn needs_lifting(&self, expr: &SqlExpression) -> bool

Check if an expression needs to be lifted

pub fn analyze_where_clause( &mut self, where_clause: &WhereClause, ) -> Vec<LiftableExpression>

Analyze WHERE clause and identify expressions to lift

pub fn lift_expressions(&mut self, stmt: &mut SelectStatement) -> Vec<CTE>

Lift expressions from a SELECT statement

pub fn create_work_units_for_lifted( &mut self, lifted_ctes: &[CTE], plan: &mut QueryPlan, ) -> Vec<String>

Create work units for lifted expressions