select Name as Customers from Customers where Id not in (select CustomerId from Orders);

leetcode 183. Customers Who Never Order的更多相关文章

  1. LeetCode 183. Customers Who Never Order (从不订购的客户)

    题目标签: 题目给了我们 Customers 和 Orders 两个表格,让我们找到 从没订购过的客户. 首先从Orders 得到 订购过的CustomerId,然后再去Customers 里找 没有 ...

  2. [LeetCode] 183. Customers Who Never Order_Easy tag: SQL

    Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL qu ...

  3. 【SQL】183. Customers Who Never Order

    Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL qu ...

  4. 183. Customers Who Never Order

    Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL qu ...

  5. [LeetCode] Customers Who Never Order 从未下单订购的顾客

    Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL qu ...

  6. LeetCode - Customers Who Never Order

    Description: Suppose that a website contains two tables, the Customers table and the Orders table. W ...

  7. LeetCode——Customers Who Never Order(灵活使用NOT IN以及IN)

    Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL qu ...

  8. [SQL]LeetCode183. 从不订购的客户 | Customers Who Never Order

    Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL qu ...

  9. LeeCode(Database)-Customers Who Never Order

    Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL qu ...

随机推荐

  1. 学习笔记之Moq

    dotnet/src/MoqSample at master · haotang923/dotnet · GitHub https://github.com/htanghtang/dotnet/tre ...

  2. Access restriction: The type Resource is not accessible due to restriction on required library

    方法一: 全局属性Project>preferences>java>Compiler>Errors/Warnings>把右侧的[Deprecated and restri ...

  3. centos 装iptraf查看网络流量

    今天在测试服务器上准备看下网络流量 [root@localhost ~]# iptraf -d eth0-bash: iptraf: command not found 发现运维同事没有给安装 只能自 ...

  4. php如何判断IP为有效IP地址

    不需要正则表达式来判断,因为在php5.2.0之后,有专门的函数来做这个判断了. 判断是否是合法IP if(filter_var($ip, FILTER_VALIDATE_IP)) { // it's ...

  5. PHP PDO 预处理语句与存储过程

    很多更成熟的数据库都支持预处理语句的概念. 什么是预处理语句?可以把它看作是想要运行的 SQL 的一种编译过的模板,它可以使用变量参数进行定制.预处理语句可以带来两大好处: 查询仅需解析(或预处理)一 ...

  6. Northwestern European Regional Contest 2017-I题- Installing Apps题解

    一.题意 有一个手机,容量为$C$,网上有$N$个app,每个app有个安装包大小$d_i$,有个安装后的占用空间大小$s_i$,安装app是瞬间完成的,即app的占用空间可以瞬间由$d_i$变成$s ...

  7. ie6,7下的textarea的type获取

    <input type='button' value="按钮" class='gys'> <textarea class='gys gystextarea'> ...

  8. 【Codeforces】CF 5 C Longest Regular Bracket Sequence（dp）

    题目 传送门:QWQ 分析 洛谷题解里有一位大佬讲的很好. 就是先用栈预处理出可以匹配的左右括号在数组中设为1 其他为0 最后求一下最长连续1的数量. 代码 #include <bits/std ...

  9. PHP mysqli_autocommit() 函数

    定义和用法 mysqli_autocommit() 函数开启或关闭自动提交数据库修改. 提示:请查看 mysqli_commit() 函数,用于提交指定数据库连接的当前事务.请查看 mysqli_ro ...

  10. JavaScript中的数组和字符串

    知识内容: 1.JavaScript中的数组 2.JavaScript中的字符串 一.JavaScript中的数组 1.JavaScript中的数组是什么 数组指的是数据的有序列表,每种语言基本上都有 ...