Sql queries

Oracle SQL: SQL-Plsql Concepts, Queries & Tips for All Database Developers & Pro

John L Viescas: SQL Queries for Mere Mortals

SQL Query Design Patterns and Best Practices: A practical guide to writing reada

Mastering SQL Queries for SAP Business One av Gordon Du (Paperback)

SQL in a Week A FastTrack Guide to Writing and Optimizing Queries Like a Pro