add leetcode problem-cn part3

2025-09-14 03:41:41 +08:00 · 2022-03-27 20:46:41 +08:00
parent 6dafca13c5
commit dfacb20d31
1385 changed files with 115239 additions and 3 deletions
--- a/算法题（国内版）/problem
+++ b/算法题（国内版）/problem
@@ -0,0 +1,29 @@
+<p>给定表 <code>customer</code> ，里面保存了所有客户信息和他们的推荐人。</p>
+
+<pre>
+------+------+-----------+
+| id   | name | referee_id|
+------+------+-----------+
+|    1 | Will |      NULL |
+|    2 | Jane |      NULL |
+|    3 | Alex |         2 |
+|    4 | Bill |      NULL |
+|    5 | Zack |         1 |
+|    6 | Mark |         2 |
+------+------+-----------+
+</pre>
+
+<p>写一个查询语句，返回一个客户列表，列表中客户的推荐人的编号都 <strong>不是 </strong>2。</p>
+
+<p>对于上面的示例数据，结果为：</p>
+
+<pre>
+------+
+| name |
+------+
+| Will |
+| Jane |
+| Bill |
+| Zack |
+------+
+</pre>