From b0599041a16a1896b7d341991c7dd672a4b3745f Mon Sep 17 00:00:00 2001
From: zwang28 <84491488@qq.com>
Date: Wed, 13 Nov 2024 17:16:47 +0800
Subject: [PATCH 1/2] refactor: allow modification of the query mode

---
 src/common/src/session_config/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common/src/session_config/mod.rs b/src/common/src/session_config/mod.rs
index 3b9451bf55112..d452c51ad3539 100644
--- a/src/common/src/session_config/mod.rs
+++ b/src/common/src/session_config/mod.rs
@@ -77,7 +77,7 @@ pub struct SessionConfig {
     /// The default value is auto which means let the system decide to run batch queries in local
     /// or distributed mode automatically.
     #[serde_as(as = "DisplayFromStr")]
-    #[parameter(default = QueryMode::default(), flags = "NO_ALTER_SYS")]
+    #[parameter(default = QueryMode::default())]
     query_mode: QueryMode,
 
     /// Sets the number of digits displayed for floating-point values.

From a658412c883a29e2ffa4ea0d17d83ae5246e4a15 Mon Sep 17 00:00:00 2001
From: zwang28 <84491488@qq.com>
Date: Tue, 19 Nov 2024 11:23:29 +0800
Subject: [PATCH 2/2] fix test

---
 e2e_test/ddl/alter_session_params.slt | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/e2e_test/ddl/alter_session_params.slt b/e2e_test/ddl/alter_session_params.slt
index ecaf7f09ebad3..49968ded83245 100644
--- a/e2e_test/ddl/alter_session_params.slt
+++ b/e2e_test/ddl/alter_session_params.slt
@@ -26,9 +26,6 @@ set STREAMING_ENABLE_DELTA_JOIN to false;
 statement ok
 set RW_STREAMING_ENABLE_DELTA_JOIN to true;
 
-statement error session param query_mode cannot be altered system wide
-alter system set query_mode to auto;
-
 connection other1
 query T
 show RW_STREAMING_ENABLE_DELTA_JOIN;