From ac544c1d85c53e7f51e4ea76aa2489a14aef03d9 Mon Sep 17 00:00:00 2001
From: zjh <1084500556@qq.com>
Date: 星期五, 20 六月 2025 18:57:45 +0800
Subject: [PATCH] zjh20250620

---
 ltkj-system/src/main/resources/mapper/system/SysDeptMapper.xml |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/ltkj-system/src/main/resources/mapper/system/SysDeptMapper.xml b/ltkj-system/src/main/resources/mapper/system/SysDeptMapper.xml
index 6bf5d4f..28cfbee 100644
--- a/ltkj-system/src/main/resources/mapper/system/SysDeptMapper.xml
+++ b/ltkj-system/src/main/resources/mapper/system/SysDeptMapper.xml
@@ -396,5 +396,18 @@
               )}
     </select>
 
+    <select id="getDeptTreeById" resultType="java.lang.Long">
+        WITH RECURSIVE dept_tree AS (
+            SELECT dept_id
+            FROM sys_dept
+            WHERE dept_id = #{deptId}
 
+            UNION ALL
+
+            SELECT d.dept_id
+            FROM sys_dept d
+                     INNER JOIN dept_tree dt ON d.parent_id = dt.dept_id
+        )
+        SELECT dept_id FROM dept_tree;
+    </select>
 </mapper>

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