// It is modeled as a sample scan
public override LogicNode CreatePlan()
{
// disable memo optimization for it
queryOpt_.optimize_.use_memo_ = false;
logicPlan_ = new LogicIndex(select_.CreatePlan(), def_);
return(logicPlan_);
}
public override LogicNode SubstitutionOptimize()
{
var scan = select_.SubstitutionOptimize();
logicPlan_ = new LogicIndex(scan, def_);
// convert to physical plan
physicPlan_ = logicPlan_.DirectToPhysical(queryOpt_);
return(logicPlan_);
}
public override LogicNode SubstitutionOptimize()
{
Debug.Assert(object.ReferenceEquals(queryOpt_, select_.queryOpt_));
var scan = select_.SubstitutionOptimize();
logicPlan_ = new LogicIndex(scan, def_);
// convert to physical plan
physicPlan_ = logicPlan_.DirectToPhysical(queryOpt_);
return(logicPlan_);
}
public PhysicIndex(LogicIndex logic, PhysicNode l) : base(logic) => children_.Add(l);
