The present system improves the performance of a query in a database system when a plan for the query comprises sorting an input that is at least partially sorted such that a slow materialization sort can be applied. The invention applies the slow materialization sort by determining a sequence of subsets...http://www.google.fr/patents/US7099864?utm_source=gb-gplus-shareBrevet US7099864 - System and method for slow materialization sorting of partially ordered inputs in a database system
System and method for slow materialization sorting of partially ordered ...
