From 8ae0ee52df8fecaa8159d55179239e79ac19665e Mon Sep 17 00:00:00 2001
From: Inada Naoki <songofacandy@gmail.com>
Date: Sat, 18 May 2024 16:10:16 +0900
Subject: [PATCH] revert Prepare change

---
 connection.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/connection.go b/connection.go
index 3644464e7..3e8fb5722 100644
--- a/connection.go
+++ b/connection.go
@@ -171,7 +171,9 @@ func (mc *mysqlConn) Prepare(query string) (driver.Stmt, error) {
 	// Send command
 	err := mc.writeCommandPacketStr(comStmtPrepare, query)
 	if err != nil {
-		return nil, err
+		// STMT_PREPARE is safe to retry.  So we can return ErrBadConn here.
+		mc.log(err)
+		return nil, driver.ErrBadConn
 	}
 
 	stmt := &mysqlStmt{