SQL Tutorials
This note explains the following topics: Basic Sql Statements, Restricting and Sorting, Join Statements, Multiple Column Subqueries, isqlPlus, Types of Sql Functions, Character Functions, Number Functions, Single Row Numeric Functions, Row Functions, Subqueries, Conversion Functions, Union, Alter Table and Create Table.
Author(s): Technology Promotion Center, Ankara, TR
NA Pages 
This note explains the following topics: Structured Query Language, Advanced SQL, PLSQL, Control Structures, Stored Procedures, Dynamic SQL.
Author(s): University of Mumbai
273 Pages
What every developer should know about SQL performance
This book covers everything developers need to know about indexes and nothing more. To be more precise, the book covers the most important index type only: the B-tree index. The structure of the book is tailor made for developers; most chapters correspond to a particular part of an SQL statement.
Author(s): Markus Winand
NA Pages
