We at International Institute of Information Technology (IIIT) Hyderabad, India, have extended the Postgres database system with the skyline operation. For this work, we were guided by our Prof. Kamalakar Karlapalem (http://www.iiit.ac.in/~kamal/).
We have extended SQL 'SELECT' clause by an optional 'SKYLINE OF' clause in version 8.0.3. The changes are done in parser, transformation, planner/optimizer (a bit) and executor stages. For its execution, two novel algorithms - BNL (Block Nested Loop) and SFS (Sort Filter Skyline) - are also implemented. Can this piece of work contribute to PostgreSQL? If yes, then we'll send out a detailed report of this project including changes made, issues involved/need to be solved, limitations, future work, and the source code etc. Thanks very much. Regards, Nikita Ranbeer -- http://students.iiit.ac.in/~nikita/ http://students.iiit.ac.in/~ranbeer/
