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leetcode-problemset/leetcode-cn/problem (Chinese)/销售员 [sales-person].html
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<p>表:&nbsp;<code>SalesPerson</code></p>
<pre>
+-----------------+---------+
| Column Name | Type |
+-----------------+---------+
| sales_id | int |
| name | varchar |
| salary | int |
| commission_rate | int |
| hire_date | date |
+-----------------+---------+
Sales_id是该表的主键列。
该表的每一行都显示了销售人员的姓名和ID以及他们的工资、佣金率和雇佣日期。
</pre>
<p>&nbsp;</p>
<p>表:&nbsp;<code>Company</code></p>
<pre>
+-------------+---------+
| Column Name | Type |
+-------------+---------+
| com_id | int |
| name | varchar |
| city | varchar |
+-------------+---------+
Com_id是该表的主键列。
该表的每一行都表示公司的名称和ID以及公司所在的城市。
</pre>
<p>&nbsp;</p>
<p>表:&nbsp;<code>Orders</code></p>
<pre>
+-------------+------+
| Column Name | Type |
+-------------+------+
| order_id | int |
| order_date | date |
| com_id | int |
| sales_id | int |
| amount | int |
+-------------+------+
Order_id是该表的主键列。
com_id是Company表中com_id的外键。
sales_id是来自销售员表com_id的外键。
该表的每一行包含一个订单的信息。这包括公司的ID、销售人员的ID、订单日期和支付的金额。
</pre>
<p>&nbsp;</p>
<p>编写一个SQL查询报告没有任何与名为 <strong>“RED”</strong> 的公司相关的订单的所有销售人员的姓名。</p>
<p><strong>任意顺序</strong> 返回结果表。</p>
<p>查询结果格式如下所示。</p>
<p>&nbsp;</p>
<p><strong>示例 1:</strong></p>
<pre>
<strong>输入:</strong>
SalesPerson 表:
+----------+------+--------+-----------------+------------+
| sales_id | name | salary | commission_rate | hire_date |
+----------+------+--------+-----------------+------------+
| 1 | John | 100000 | 6 | 4/1/2006 |
| 2 | Amy | 12000 | 5 | 5/1/2010 |
| 3 | Mark | 65000 | 12 | 12/25/2008 |
| 4 | Pam | 25000 | 25 | 1/1/2005 |
| 5 | Alex | 5000 | 10 | 2/3/2007 |
+----------+------+--------+-----------------+------------+
Company 表:
+--------+--------+----------+
| com_id | name | city |
+--------+--------+----------+
| 1 | RED | Boston |
| 2 | ORANGE | New York |
| 3 | YELLOW | Boston |
| 4 | GREEN | Austin |
+--------+--------+----------+
Orders 表:
+----------+------------+--------+----------+--------+
| order_id | order_date | com_id | sales_id | amount |
+----------+------------+--------+----------+--------+
| 1 | 1/1/2014 | 3 | 4 | 10000 |
| 2 | 2/1/2014 | 4 | 5 | 5000 |
| 3 | 3/1/2014 | 1 | 1 | 50000 |
| 4 | 4/1/2014 | 1 | 4 | 25000 |
+----------+------------+--------+----------+--------+
<strong>输出:</strong>
+------+
| name |
+------+
| Amy |
| Mark |
| Alex |
+------+
<strong>解释:</strong>
根据表&nbsp;<code>orders</code>&nbsp;中的订单 '3' 和 '4' ,容易看出只有 'John' 和 'Pam' 两个销售员曾经向公司 'RED' 销售过。
所以我们需要输出表&nbsp;<code>salesperson</code>&nbsp;中所有其他人的名字。</pre>