SQL in a Nutshell: A Desktop Quick Reference 4th

For programmers, analysts, and database administrators, this Nutshell guide is the essential reference for the SQL language used in today's most popular database products. This new fourth edition clearly documents SQL commands according to the latest ANSI/ISO standard and details how those commands are implemented in Microsoft SQL Server 2019 and Oracle 19c, as well as in the MySQL 8, MariaDB 10.5, and PostgreSQL 14 open source database products.

You'll also get a concise overview of the relational database management system (RDBMS) model and a clear-cut explanation of foundational RDBMS concepts--all packed into a succinct, comprehensive, and easy-to-use format.

Sections include:

• Background on the relational database model, including current and previous SQL standards
• Fundamental concepts necessary for understanding relational databases and SQL commands
• An alphabetical command reference to SQL statements, according to the SQL:2016 ANSI standard
• The implementation of each command by MySQL, Oracle, PostgreSQL, and SQL Server
• An alphabetical reference of the ANSI SQL:2016 functions and constructs as well as the vendor implementations
• Platform-specific functions unique to each implementation

對於程式設計師、分析師和資料庫管理員來說，這本《Nutshell》指南是今天最受歡迎的資料庫產品中使用的SQL語言的必備參考資料。這本新的第四版根據最新的ANSI/ISO標準清楚地記錄了SQL命令，並詳細介紹了這些命令在Microsoft SQL Server 2019和Oracle 19c以及MySQL 8、MariaDB 10.5和PostgreSQL 14等開源資料庫產品中的實現方式。

您還將獲得對關聯式資料庫管理系統（RDBMS）模型的簡明概述，以及對基礎RDBMS概念的清晰解釋，所有這些都被簡潔、全面且易於使用的格式所包含。

各節包括：

- 關於關聯式資料庫模型的背景，包括當前和先前的SQL標準
- 理解關聯式資料庫和SQL命令所需的基本概念
- 按照SQL:2016 ANSI標準的SQL語句的按字母順序的命令參考
- MySQL、Oracle、PostgreSQL和SQL Server對每個命令的實現
- 按字母順序的ANSI SQL:2016函數和結構的參考，以及供應商的實現
- 每個實現獨有的特定平台函數

Kevin Kline is a noted database expert and software industry veteran. A Microsoft SQL Server MVP since 2004, Kevin is a founder and former president of the Professional Association for SQL Server (PASS.org) and the author of many popular IT books. Kevin is also a top-rated speaker at industry trade shows worldwide.

Regina Obe is co-principal of Paragon Corporation (paragoncorporation.com), a database consulting company based in Boston. She has close to 30 years of professional experience in various programming languages and database systems, with special focus on PostgreSQL and PostGIS spatial database extension for PostgreSQL. She is a member of the PostGIS steering committee and development team. She is a coauthor of several database books with her husband, Leo Hsu.

Leo Hsu is co-principal of Paragon Corporation, a database consulting company based in Boston. He has over 25 years of professional experience developing and thinking about databases for organizations large and small. He also holds a lectureship at Tufts University, teaching SQL to graduate level students. He has coauthored several database books with his wife Regina Obe.

Kevin Kline是一位知名的資料庫專家和軟體業界老手。自2004年以來，他一直是Microsoft SQL Server MVP，同時也是專業SQL Server協會（PASS.org）的創始人和前任會長，並且是許多熱門IT書籍的作者。Kevin也是全球行業展會上評價最高的演講者之一。

Regina Obe是波士頓Paragon Corporation（paragoncorporation.com）的共同負責人，該公司是一家資料庫諮詢公司。她擁有近30年的專業經驗，涉及多種編程語言和資料庫系統，尤其專注於PostgreSQL和PostGIS空間資料庫擴展。她是PostGIS指導委員會和開發團隊的成員，與丈夫Leo Hsu共同撰寫了幾本資料庫書籍。

Leo Hsu是波士頓Paragon Corporation的共同負責人，他擁有超過25年的專業經驗，致力於開發和思考各種規模的組織的資料庫。他還在塔夫茨大學擔任講師，教授研究生級別的SQL課程。他與妻子Regina Obe共同撰寫了幾本資料庫書籍。