From 431ffcb99ed408357948aaa016cdc99f6d684206 Mon Sep 17 00:00:00 2001
From: discord9 <55937128+discord9@users.noreply.github.com>
Date: Fri, 9 Oct 2026 16:43:00 +0800
Subject: [PATCH] test: exercise native optimizer options over SQL protocols

Signed-off-by: discord9 <55937128+discord9@users.noreply.github.com>
---
 .../common/system/query_options.sql           | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/tests/cases/standalone/common/system/query_options.sql b/tests/cases/standalone/common/system/query_options.sql
index f24a85f3ad9..1efb48d497c 100644
--- a/tests/cases/standalone/common/system/query_options.sql
+++ b/tests/cases/standalone/common/system/query_options.sql
@@ -31,3 +31,40 @@ SET QUERY.PARALLELISM TO 16;
 
 -- SQLNESS PROTOCOL POSTGRES
 SHOW QUERY.PARALLELISM;
+
+-- Native DataFusion options are accepted through MySQL SET and SHOW.
+-- SQLNESS PROTOCOL MYSQL
+SET datafusion.optimizer.prefer_hash_join = false;
+
+-- SQLNESS PROTOCOL MYSQL
+SHOW VARIABLES datafusion.optimizer.prefer_hash_join;
+
+-- SQLNESS PROTOCOL MYSQL
+SET query.enable_remote_dynamic_filter_pushdown = false;
+
+-- SQLNESS PROTOCOL MYSQL
+SHOW VARIABLES query.enable_remote_dynamic_filter_pushdown;
+
+-- Invalid query parallelism is rejected at both bounds.
+-- SQLNESS PROTOCOL MYSQL
+SET query.parallelism = 0;
+
+-- SQLNESS PROTOCOL MYSQL
+SET query.parallelism = 1025;
+
+-- Native DataFusion options are accepted through PostgreSQL SET and SHOW.
+-- SQLNESS PROTOCOL POSTGRES
+SET datafusion.optimizer.enable_dynamic_filter_pushdown TO 'FALSE';
+
+-- SQLNESS PROTOCOL POSTGRES
+SHOW datafusion.optimizer.enable_dynamic_filter_pushdown;
+
+-- SQLNESS PROTOCOL POSTGRES
+SET query.allow_query_fallback TO true;
+
+-- SQLNESS PROTOCOL POSTGRES
+SHOW query.allow_query_fallback;
+
+-- PostgreSQL query-option typos are errors.
+-- SQLNESS PROTOCOL POSTGRES
+SET query.unknown_option TO true;