From a4fe077a231ed2ae0094af0fc6fa0735b764c862 Mon Sep 17 00:00:00 2001
From: 疯狂的狮子Li <15040126243@163.com>
Date: 星期五, 28 六月 2024 12:49:58 +0800
Subject: [PATCH] update 优化 大数据量下join卡顿问题 使用子查询提高性能
---
ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysRoleMapper.xml | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysRoleMapper.xml b/ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysRoleMapper.xml
index 7b8bba7..4ef7b1e 100644
--- a/ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysRoleMapper.xml
+++ b/ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysRoleMapper.xml
@@ -48,9 +48,7 @@
r.data_scope,
r.status
from sys_role r
- left join sys_user_role sur on sur.role_id = r.role_id
- left join sys_user u on u.user_id = sur.user_id
- WHERE r.del_flag = '0' and sur.user_id = #{userId}
+ WHERE r.del_flag = '0' and r.role_id in (select role_id from sys_user_role where user_id = #{userId})
</select>
<select id="selectRoleById" resultMap="SysRoleResult">
--
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