When queries written in SQL are converted into query trees by the query optimizer (S1102). The query processor finds tasks to be processed directly from the query trees (S1104), and if the next tasks performing operation on processing results of the tasks that can be processed directly are project operation,...http://www.google.fr/patents/US20080294615?utm_source=gb-gplus-shareBrevet US20080294615 - Query processing system of a database using multi-operation processing utilizing a synthetic relational operation in consideration of improvement in a processing capability of a join operation
Query processing system of a database using multi-operation processing ...
Numéro de demande: 12/149,059 Numéro de publication: US 2008/0294615 A1 Date de dépôt: 25 avr. 2008 Brevet délivré: US7680784 ( Date de délivrance 16 mars 2010)
