Merge pull request duckdb#11645 from wangxiaoying/ec0

Filter out single relation predicates before join ordering

src/include/duckdb/optimizer/join_order/cardinality_estimator.hpp

@@ -82,7 +82,7 @@ class CardinalityEstimator {
 	void PrintRelationToTdomInfo();
 
 private:
-	bool SingleColumnFilter(FilterInfo &filter_info);
+	bool SingleRelationFilter(FilterInfo &filter_info);
 	vector<idx_t> DetermineMatchingEquivalentSets(FilterInfo *filter_info);
 	//! Given a filter, add the column bindings to the matching equivalent set at the index
 	//! given in matching equivalent sets.

src/optimizer/join_order/cardinality_estimator.cpp

@@ -37,9 +37,9 @@ void CardinalityEstimator::AddRelationTdom(FilterInfo &filter_info) {
 	relations_to_tdoms.emplace_back(new_r2tdom);
 }
 
-bool CardinalityEstimator::SingleColumnFilter(FilterInfo &filter_info) {
-	if (filter_info.left_set && filter_info.right_set) {
-		// Both set
+bool CardinalityEstimator::SingleRelationFilter(FilterInfo &filter_info) {
+	if (filter_info.left_set && filter_info.right_set && filter_info.set.count > 1) {
+		// Both set and are from different relations
 		return false;
 	}
 	if (EmptyFilter(filter_info)) {
@@ -100,7 +100,7 @@ void CardinalityEstimator::InitEquivalentRelations(const vector<unique_ptr<Filte
 	// For each filter, we fill keep track of the index of the equivalent relation set
 	// the left and right relation needs to be added to.
 	for (auto &filter : filter_infos) {
-		if (SingleColumnFilter(*filter)) {
+		if (SingleRelationFilter(*filter)) {
 			// Filter on one relation, (i.e string or range filter on a column).
 			// Grab the first relation and add it to  the equivalence_relations
 			AddRelationTdom(*filter);