Oracle International Corporation

Gautam Kumar Parai

Rafi Ahmed

A method and apparatus for outer-joined and/or cross-joined table elimination for duplicate-insignificant queries is provided. A query block of a query specifies a join between a first table and a second table. The join is one of an outer join and a cross join. A first determination is made that the query block contains no references to the second table to be processed after the join. A second determination is made that the query block is duplicate-insignificant. In response to making the first determination and the second determination, the query block is transformed into a transformed query, where the second table is eliminated from a corresponding query block in the transformed query.

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San Carlos, CA, United States of America

Gautam Kumar Parai