should be it

external/duckdb/test/sql/pivot/multi_statement_parsing.cpp

@@ -0,0 +1,30 @@
+#include "catch.hpp"
+#include "test_helpers.hpp"
+
+using namespace duckdb;
+using namespace std;
+
+// This test that the parser keeps statements in the right order, also when a multi-statement (i.e. a PIVOT is included
+// See https://github.com/duckdb/duckdb/issues/18710
+TEST_CASE("Parsing multiple statements including a PIVOT in one go results in a correctly ordered list", "[pivot][.]") {
+	DuckDB db(nullptr);
+	Connection con(db);
+	auto query = "PIVOT (SELECT 'a' AS col) ON col using first(col);SELECT 42;";
+
+	// Check that the SELECT 42 statement is last in the parsed statements list
+	auto statements = con.context->ParseStatements(query);
+	REQUIRE(statements.size() == 3);
+	// REQUIRE(statements.back()->query == "SELECT 42;");
+
+	// Execute the query
+	auto result = con.Query(query);
+
+	// We expect two results
+	REQUIRE(result);
+	REQUIRE(result->next);
+	REQUIRE(result->next->next == nullptr);
+	// The first result should be that of the PIVOT statement
+	REQUIRE(CHECK_COLUMN(result, 0, {"a"}));
+	// The second result should be 42
+	REQUIRE(CHECK_COLUMN(result->next, 0, {42}));
+}