From f7b0b0782fc7bd8afbb968390bc4f22ad24fb2ca Mon Sep 17 00:00:00 2001
From: tison <wander4096@gmail.com>
Date: Sat, 9 Dec 2023 11:15:41 +0800
Subject: [PATCH] chore: ignore MySQL client sent SELECT $$

Signed-off-by: tison <wander4096@gmail.com>
---
 src/servers/src/mysql/federated.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/servers/src/mysql/federated.rs b/src/servers/src/mysql/federated.rs
index 80d0cb54ab94..ca4948d6657e 100644
--- a/src/servers/src/mysql/federated.rs
+++ b/src/servers/src/mysql/federated.rs
@@ -80,6 +80,9 @@ static OTHER_NOT_SUPPORTED_STMT: Lazy<RegexSet> = Lazy::new(|| {
         "(?i)^(SHOW COLLATION)",
         "(?i)^(SHOW CHARSET)",
 
+        // mysqlclient.
+        "(?i)^(SELECT \\$\\$)",
+
         // mysqldump.
         "(?i)^(SET SESSION(.*))",
         "(?i)^(SET SQL_QUOTE_SHOW_CREATE(.*))",