No regression algorithm for the enumeration of projections in SQL queries with joins and outer joins.

Gautam Bhargava Piyush Goel Balakrishna R. Iyer No regression algorithm for the enumeration of projections in SQL queries with joins and outer joins. 8 1995 conf/cascon/1995 CASCON http://doi.acm.org/10.1145/781923 db/conf/cascon/cascon1995.html#BhargavaGI95a