From 2b7007e5b17d9e8489c4e4812e44fe5a9527faa6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Ad=C3=A1mek?= <banan23@gmail.com>
Date: Sun, 9 Feb 2025 13:27:47 +0100
Subject: [PATCH] refactor: separate isolation level and access mode with a
 comma in MySQL (#1350)

---
 src/dialect/mysql/mysql-driver.ts | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/dialect/mysql/mysql-driver.ts b/src/dialect/mysql/mysql-driver.ts
index 80cc1d44a..83c865a73 100644
--- a/src/dialect/mysql/mysql-driver.ts
+++ b/src/dialect/mysql/mysql-driver.ts
@@ -74,16 +74,18 @@ export class MysqlDriver implements Driver {
     settings: TransactionSettings,
   ): Promise<void> {
     if (settings.isolationLevel || settings.accessMode) {
-      let sql = 'set transaction'
+      const parts: string[] = []
 
       if (settings.isolationLevel) {
-        sql += ` isolation level ${settings.isolationLevel}`
+        parts.push(`isolation level ${settings.isolationLevel}`)
       }
 
       if (settings.accessMode) {
-        sql += ` ${settings.accessMode}`
+        parts.push(settings.accessMode)
       }
 
+      const sql = `set transaction ${parts.join(', ')}`
+
       // On MySQL this sets the isolation level of the next transaction.
       await connection.executeQuery(CompiledQuery.raw(sql))
     }