update mysql docs

fengzhao · Nov 26, 2020 · 1ff84bf · 1ff84bf
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diff --git a/mysql/CTE公用表达式.markdown b/mysql/CTE公用表达式.markdown
@@ -84,6 +84,23 @@ insert into db_test.employees_mgr values
 (4610, "Sarah", 29); /* Sarah has id 4610 and reports to 29 (Pedro) */
 
 
+-- 要查询出如下这种树形结果
+
++------+---------+--------------------+ 
+| id | name | path | 
++------+---------+--------------------+ 
+| 333 | Yasmina | 333 | 
+| 198 | John | 333->198 | 
+| 692 | Tarek | 333->692 | 
+| 29 | Pedro | 333->198->29 | 
+| 4610 | Sarah | 333->198->29->4610 | 
++------+---------+--------------------+ 
+5 rows in set (0.00 sec) 
+mysql> 
+
+
+
+
 -- MySQL8.0中支持with子句
 -- 通过递归CTE来查询用户的层级关系
 -- 规划一个ID，name，path这样的一个层级临时表
@@ -99,19 +116,6 @@ insert into db_test.employees_mgr values
  )
  select * from employee_paths;
 
-
-+------+---------+--------------------+ 
-| id | name | path | 
-+------+---------+--------------------+ 
-| 333 | Yasmina | 333 | 
-| 198 | John | 333->198 | 
-| 692 | Tarek | 333->692 | 
-| 29 | Pedro | 333->198->29 | 
-| 4610 | Sarah | 333->198->29->4610 | 
-+------+---------+--------------------+ 
-5 rows in set (0.00 sec) 
-mysql> 
-
 ```
 
 

diff --git a/mysql/SQL语法/面试题.markdown b/mysql/SQL语法/面试题.markdown