The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2002
Filed:
Jun. 25, 1999
Stephen Yao Ching Chen, Saratoga, CA (US);
Patrick Michael Malone, San Jose, CA (US);
Jerry Mukai, San Jose, CA (US);
Jeffrey Ralph Ruggles, San Jose, CA (US);
Desai Paramesh Sampatrai, San Jose, CA (US);
Yun Wang, Saratoga, CA (US);
Guogen Zhang, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Disclosed is a method, system, and program for performing a join operation on a multi-column table and at least two satellite tables having a join condition. Each satellite table is comprised of multiple rows and at least one join column. The multi-column table is comprised of multiple rows and at least one column corresponding to the join column in each satellite table. A join operation is performed on the rows of the satellite tables to generate concatenated rows of the satellite tables. One of the concatenated rows is joined to the multi-column table and a returned entry from the multi-column table is received. A determination is then made as to whether the returned entry matches the search criteria. If so, a determination is made as to whether one of the satellite tables has duplicates of values in the join column of the returned matching entry or the multi-column table has duplicate entries in the join columns. Returned matching entries are generated for each duplicate value in the satellite tables and duplicate entry in the multi-column table.