SQL Queries for Mere Mortals: A Hands-On Guide to Data Manipulation in SQL, 3/e (Paperback)

The #1 Easy, Common-Sense Guide to SQL Queries—Updated for Today’s Databases, Standards, and Challenges

SQL Queries for Mere Mortals ® has earned worldwide praise as the clearest, simplest tutorial on writing effective SQL queries. The authors have updated this hands-on classic to reflect new SQL standards and database applications and teach valuable new techniques.

Step by step, John L. Viescas and Michael J. Hernandez guide you through creating reliable queries for virtually any modern SQL-based database. They demystify all aspects of SQL query writing, from simple data selection and filtering to joining multiple tables and modifying sets of data.

Three brand-new chapters teach you how to solve a wide range of challenging SQL problems. You’ll learn how to write queries that apply multiple complex conditions on one table, perform sophisticated logical evaluations, and think “outside the box” using unlinked tables.

Coverage includes

-- Getting started: understanding what relational databases are, and ensuring that your database structures are sound

-- SQL basics: using SELECT statements, creating expressions, sorting information with ORDER BY, and filtering data using WHERE

-- Summarizing and grouping data with GROUP BY and HAVING clauses

-- Drawing data from multiple tables: using INNER JOIN, OUTER JOIN, and UNION operators, and working with subqueries

-- Modifying data sets with UPDATE, INSERT, and DELETE statements Advanced queries: complex NOT and AND, conditions, if-then-else using CASE, unlinked tables, driver tables, and more

Practice all you want with downloadable sample databases for today’s versions of Microsoft Office Access, Microsoft SQL Server, and the open source MySQL database. Whether you’re a DBA, developer, user, or student, there’s no better way to master SQL.

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《SQL Queries for Mere Mortals》是一本易懂且實用的SQL查詢指南，已經更新以符合現今的資料庫、標準和挑戰。作者透過這本實用的經典著作，引導讀者逐步學習如何為任何現代SQL資料庫創建可靠的查詢。他們將SQL查詢寫作的各個方面解密，從簡單的資料選擇和篩選，到多個表格的連接和資料集的修改。

全新的三章教導讀者如何解決各種具有挑戰性的SQL問題。您將學習如何為一個表格應用多個複雜條件，執行複雜的邏輯評估，並使用未連接的表格進行創新思考。

本書涵蓋的內容包括：
- 入門指南：了解關聯式資料庫的基礎知識，確保您的資料庫結構正確無誤
- SQL基礎知識：使用SELECT語句、創建表達式、使用ORDER BY進行排序，以及使用WHERE進行資料篩選
- 使用GROUP BY和HAVING子句進行資料總結和分組
- 從多個表格中提取資料：使用INNER JOIN、OUTER JOIN和UNION運算符，以及處理子查詢
- 使用UPDATE、INSERT和DELETE語句修改資料集
- 進階查詢：複雜的NOT和AND條件，使用CASE進行if-then-else，未連接的表格，驅動表格等等

您可以下載可供今天的Microsoft Office Access、Microsoft SQL Server和開源MySQL資料庫使用的範例資料庫，隨時練習。無論您是資料庫管理員、開發人員、使用者還是學生，這是掌握SQL的最佳途徑。

更多資訊請參閱informit.com/aw和forMereMortals.com。