MariaDB与MySQL:共用表表达式与窗口函数深入解析

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"MariaDB and MySQL Common Table Expressions and Window Functions 无水印原版pdf" 本书《MariaDB and MySQL Common Table Expressions and Window Functions Revealed》由Daniel Bartholomew撰写,详细介绍了MariaDB和MySQL数据库系统中的两种高级查询功能:Common Table Expressions(CTEs)和Window Functions。CTEs是SQL中的一种临时结果集,可以在单个查询中多次引用,提高了复杂查询的可读性和维护性。而Window Functions则允许在数据集上进行计算时考虑当前行的上下文,如计算排名、移动平均等,极大地增强了分析和聚合能力。 在MariaDB和MySQL中,这两项特性都极大地扩展了数据库的查询能力,使得开发者可以编写更高效、更灵活的SQL语句。书中可能涵盖了如何创建和使用CTEs进行多步骤查询,以及如何利用Window Functions执行复杂的行级计算。此外,作者Daniel Bartholomew可能会详细讲解这两种技术的工作原理,提供实例来演示它们在实际问题中的应用,并给出最佳实践建议。 这本书对于数据库管理员、开发人员以及对数据库性能优化感兴趣的读者来说,是一份宝贵的参考资料。通过学习,读者将能够更好地理解和掌握如何在MariaDB和MySQL环境中利用CTEs和Window Functions提升查询效率,从而优化数据处理和分析流程。 该资源的ISBN号分别为:pbk版本的978-1-4842-3119-7和electronic版本的978-1-4842-3120-3。如果想了解更多关于本书的信息,可以在美国亚马逊官网进行搜索。需要注意的是,此资源的版权受法律保护,未经授权不得复制或以其他形式使用其中的材料。 这本书深入浅出地探讨了MariaDB和MySQL中的CTEs和Window Functions,是提升数据库操作和查询能力的重要学习资料。通过阅读,读者不仅可以了解到这些高级查询技术,还能了解到如何将它们有效地应用于实际的数据库管理和开发工作中。
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Walk away from old-fashioned and cumbersome query approaches and answer your business intelligence questions through simple and powerful queries built on common table expressions (CTEs) and window functions. These new features in MariaDB and MySQL help you to write queries without having to wade through a quagmire of brittle self-joins and other crazy techniques from the past. Your queries will generate correct results, be more readable and less brittle in the face of unexpected data, and you’ll be able to adapt them quickly in the face of changing business requirements. MariaDB and MySQL Common Table Expressions and Window Functions Revealed introduces and explains CTEs and window functions, newly available in MariaDB 10.2 and MySQL 8.0, and helps you understand why and how every MariaDB and MySQL database programmer should learn and apply these features in their daily work. CTEs and especially window functions enable easy solutions to many query challenges that in prior releases have been difficult and sometimes impossible to surmount. Mastering these features opens the door to query solutions that are more robust, execute faster, and are easier to maintain over time than prior solutions using older techniques. The book: Takes you step-by-step through the workings of common table expressions and window functions Provides easy-to-follow examples of the new syntax Helps you answer business questions faster and easier than ever What You’ll Learn Answer business questions using simple queries that don’t break in the face of unexpected data Avoid writing queries that are a difficult-to-maintain quagmire of self-joins and nested subqueries Recognize situations that call for window functions, and learn when to use these features Reduce the need for performance-robbing self-joins Simplify and speed the execution of analytical queries Create queries that finish in seconds instead of hours Who This Book Is For Database administrators and application developers who want to quickly get up to speed on important features in MariaDB and MySQL for writing business intelligence queries. Any developer writing SQL against MariaDB and MySQL databases will benefit tremendously from the knowledge and techniques this book provides.