books by subject
SQL Databases
Java Persistence with Hibernate
Simply SQL: The Fun and Easy Way to Learn Best-Practice SQL
SQL In Easy Steps 3rd Edition
The Practical SQL Handbook
SQL in a Nutshell – A Desktop Quick Reference
The Database Language SQL
SQL: The Complete Reference (Osborne's Complete Reference Series)
Joe Celko's SQL for Smarties: Advanced SQL Programming Second Edition (The Morgan Kaufmann Series in Data Management Systems)
Comprehensive Guide to Sql
SQL Pocket Guide
SQL in a Nutshell: A Desktop Quick Reference
Learning SQL
Sams Teach Yourself SQL in 10 Minutes
Head First SQL
Code Centric: T-SQL Programming with Stored Procedures and Triggers
SQL for Beginners: A Step by Step Guide to Learn SQL Programming and Database Management Systems
Sams Teach Yourself SQL in 10 Minutes
SQL (Beginner's Guides (Osborne))
Sams Teach Yourself SQL in 10 Minutes
Understanding SQL
Sams Teach Yourself SQL in 21 Days, Second Edition
SQL For Dummies
Sams Teach Yourself SQL in 24 Hours
SQL Cookbook
JSONiq: The SQL of NoSQL
The Practical SQL Handbook: Using Structured Query Language
Understanding SQL
MCTS Self-paced Training Kit (exam 70-445): Microsoft SQL Server 2005 Business Intelligence -- Implementation and Maintenance
Sams Teach Yourself SQL in 10 Minutes