DYNAMICALLY DETERMINING JOIN ORDER

专利名称：DYNAMICALLY DETERMINING JOIN ORDER发明人：Gopi K. Attaluri,Sam S.

Lightstone,Vijayshankar Raman

申请号：US13755784申请日：20130131

公开号：US20140214795A1公开日：20140731

专利附图：

摘要：A weight is determined for each of a plurality of join predicates for a joinbetween one or more first database objects and one or more second database objectsbased on a join selectivity for each of the plurality of join predicates. The plurality of join

predicates are sorted based on the determined weights. The join operation is performedjoining the one or more first database objects with the one or more second databaseobjects in accordance with an order of the sorted plurality of join predicates.

申请人：INTERNATIONAL BUSINESS MACHINES CORPORATION

地址：US

国籍：US

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