دانلود کتاب Mastering Oracle SQL

Few books on the market today go beyond discussing syntax and the barest rudiments of using Oracle SQL. This book changes that, showing you how to creatively leverage the full power of SQL to write queries in an Oracle environment. This book shows you how to:Leverage Oracle's vast library of built-in SQL functionsQuery time-based data, and write joins involving date and time rangesUse Oracle SQL's hierarchical query features to deal with data best represented in a tree formatUse DECODE and CASE to implement conditional logic in your queriesUse Oracle's new, analytic SQL features to write ranking queries, lag and lead queries, windowing queries, and moreJoin data from two or more tables using the newly supported SQL92 join syntax In addition, the authors cover the full range of Oracle SQL features that apply to query writing. You'll learn many creative techniques for writing effective, good performing, and accurate queries.