Method ToString

src/parser/tableref/joinref.cpp:8–50

namespace duckdb {

string JoinRef::ToString() const {
	string result;
	result = left->ToString() + " ";
	switch (ref_type) {
	case JoinRefType::REGULAR:
		result += EnumUtil::ToString(type) + " JOIN ";
		break;
	case JoinRefType::NATURAL:
		result += "NATURAL ";
		result += EnumUtil::ToString(type) + " JOIN ";
		break;
	case JoinRefType::ASOF:
		result += "ASOF ";
		result += EnumUtil::ToString(type) + " JOIN ";
		break;
	case JoinRefType::CROSS:
		result += is_implicit ? ", " : "CROSS JOIN ";
		break;
	case JoinRefType::POSITIONAL:
		result += "POSITIONAL JOIN ";
		break;
	case JoinRefType::DEPENDENT:
		result += "DEPENDENT JOIN ";
		break;
	}
	result += right->ToString();
	if (condition) {
		D_ASSERT(using_columns.empty());
		result += " ON (";
		result += condition->ToString();
		result += ")";
	} else if (!using_columns.empty()) {
		result += " USING (";
		for (idx_t i = 0; i < using_columns.size(); i++) {
			if (i > 0) {
				result += ", ";
			}
			result += KeywordHelper::WriteOptionallyQuoted(using_columns[i]);
		}
		result += ")";
	}
	return result;
}

bool JoinRef::Equals(const TableRef &other_p) const {
	if (!TableRef::Equals(other_p)) {