zoukankan      html  css  js  c++  java
  • Teach Yourself SQL in 10 Minutes

    1. Write a SQL statement to retrieve the product id (prod_id) and name (prod_name) from the Products table, returning only products with a price (prod_price) of 9.49.

    SELECT prod_id, prod_name FROM Products WHERE prod_price = 9.49;

    2. Write a SQL statement to retrieve the product id (prod_id) and name (prod_name) from the Products table, returning only products with a price (prod_price) of 9 or more.

    SELECT prod_id, prod_name FROM Products WHERE prod_price >= 9;

    3. Now let’s combine Lessons 3 and 4. Write a SQL statement that retrieves the unique list of order numbers (order_num) from the OrderItems table which contain 100 or more (quantity) of any item.

    SELECT DISTINCT order_num FROM OrderItems WHERE quantity >= 100;

    4. One more. Write a SQL statement which returns the product name (prod_name) and price (prod_price) from Products table for all products priced between 3 and 6. Oh, and sort the results by price. (There are multiple solutions to this one and we’ll revisit it in the next lesson, but you can solve it using what you’ve learned thus far).

    SELECT prod_name, prod_price FROM Products WHERE prod_price BETWEEN 3 AND 6 ORDER BY prod_price;

  • 相关阅读:
    Ajax
    Linux安装SmartSVN及破解
    JQuery异步提交
    动画效果
    事件
    表单选择器
    DOM操作
    JQuery基础
    PHP环境配置
    DP--钢条切割
  • 原文地址:https://www.cnblogs.com/balian/p/13069588.html
Copyright © 2011-2022 走看看