SQL and Relational Theory, 2nd Edition
How to Write Accurate SQL Code

Book DescriptionSQL is full of difficulties and traps for the unwary. You can avoid them if you understand relational theory, but only if you know how to put the theory into practice. In this insightful book, author C.J. Date explains relational theory in depth, and demonstrates through numerous examples and exercises how you can apply it directly to your use of SQL. This 2nd edition includes new material on recursive queries, "missing information" without nulls, new update operators, and topics such as aggregate operators, grouping and ungrouping, and view updating. If you have a modest-to-advanced background in SQL, you'll learn how to deal with a host of common SQL dilemmas. Book Details Publisher: O'Reilly Media By: C.J. Date ISBN: 978-1-44931-640-2 Year: 2011 Pages: 448 Language: English File size: 22.4 MB File format: PDF eBook Download: 本帖隐藏的内容 SQL and Relational Theory, 2nd Edition