should be it

external/duckdb/test/api/test_tpch_with_streaming.cpp

@@ -0,0 +1,39 @@
+#include "catch.hpp"
+#include "test_helpers.hpp"
+#include "tpch_extension.hpp"
+
+#include <chrono>
+#include <iostream>
+#include "duckdb/common/string_util.hpp"
+
+using namespace duckdb;
+using namespace std;
+
+TEST_CASE("Test TPC-H SF0.01 using streaming api", "[tpch][.]") {
+	duckdb::unique_ptr<QueryResult> result;
+	DuckDB db(nullptr);
+	Connection con(db);
+	double sf = 0.01;
+	if (!db.ExtensionIsLoaded("tpch")) {
+		return;
+	}
+
+	REQUIRE_NO_FAIL(con.Query("CALL dbgen(sf=" + to_string(sf) + ")"));
+
+	for (idx_t tpch_num = 1; tpch_num <= 22; tpch_num++) {
+		result = con.SendQuery("pragma tpch(" + to_string(tpch_num) + ");");
+
+		duckdb::ColumnDataCollection collection(duckdb::Allocator::DefaultAllocator(), result->types);
+
+		while (true) {
+			auto chunk = result->Fetch();
+			if (chunk) {
+				collection.Append(*chunk);
+			} else {
+				break;
+			}
+		}
+
+		COMPARE_CSV_COLLECTION(collection, TpchExtension::GetAnswer(sf, tpch_num), true);
+	}
+}