An essential statistics identification utility tool attempts to reduce or minimize the overhead associated with statistics by identifying from an initial set of statistics a set of essential statistics that provide a query optimizer with the ability to choose among query execution plans with minimized...http://www.google.fr/patents/US6363371?utm_source=gb-gplus-shareBrevet US6363371 - Identifying essential statistics for query optimization for databases
Identifying essential statistics for query optimization for databases