Celko Joe - Trees and Hierarchies in SQL for Smarties (Elsevier 2004 238p).pdf

文档介绍：JOECELKO’STREESANDHIERARCHIESINSQLFORSMARTIESThispageintentionallyleftblankJOECELKO’STREESANDHIERARCHIESINSQLFORSMARTIESJoeCelkoAMSTERDAM•BOSTON•HEIDELBERG•LONDONNEWYORK•OXFORD•PARIS•SANDIEGOSANFRANCISCO•SINGAPORE•SYDNEY•ANKAUFMANNPUBLISHERSISANIMPRINTOFELSEVIERAcquisitionsEditorLothló,-,Suite400,SanFrancisco,CA94111Thisbookisprintedonacid-freepaper.©,,however,,storedinaretrievalsystem,ortransmittedinanyformorbyanymeans—electronic,mechanical,photocopying,scanning,orotherwise—’sScience&TechnologyRightsDepartmentinOxford,UK:phone:[phone],fax:[phone],e-mail:******@.-lineviatheElsevierhomepage()byselecting“CustomerSupport”andthen“ObtainingPermissions.”LibraryofCongressCataloging-in-PublicationDataCelko,’sTreesandhierarchiesinSQLforsmarties/-55860-920-)(Graphtheory):’3—anKaufmannpublications,visitourWebsiteatntedintheUnitedStatesofAmerica040506070854321ForHilaryandKaraIloveandbelieveinyoubothCONTENTSIntroduction11Graphs,Trees,