Celko, Joe <br/><br/>Joe Celko's trees and hierarchies in SQL for smarties / Joe Celko.   -- 2nd ed.  -- USA:  Elsevier, Inc.,  2012. <br/>xiv, 277 p. ;  ill.  24 cm. <br/><br/> Includes bibliographical references and index. <br/><br/><label>ISBN: </label>978012387338 <br/><br/><label>Subjects--Topical Terms: </label><br/>SQL (computer program language)<br/>Trees (graph theory)<br/><br/><label>Dewey Class. No.: </label>Res 005.13322 C3929 2012