protected override BoundRelation RewriteIntersectOrExceptRelation(BoundIntersectOrExceptRelation node)
{
_recorder.Record(node.Left.GetOutputValues());
_recorder.Record(node.Right.GetOutputValues());
return(base.RewriteIntersectOrExceptRelation(node));
}
protected override BoundRelation RewriteIntersectOrExceptRelation(BoundIntersectOrExceptRelation node)
{
var left = RewriteRelation(node.Left);
var right = RewriteRelation(node.Right);
var values = left.GetOutputValues();
var sortedValues = values.Zip(node.Comparers, (v, c) => new BoundComparedValue(v, c));
var sortedLeft = new BoundSortRelation(true, left, sortedValues);
var valueSlots = sortedLeft.GetOutputValues().Zip(right.GetOutputValues(), ValueTuple.Create);
var condition = CreatePredicate(valueSlots);
var joinOperator = node.IsIntersect
? BoundJoinType.LeftSemi
: BoundJoinType.LeftAntiSemi;
return(new BoundJoinRelation(joinOperator, sortedLeft, right, condition, null, null));
}
private static CardinalityEstimate EstimateIntersectOrExceptRelation(BoundIntersectOrExceptRelation relation)
{
return(CardinalityEstimate.Unknown);
}
