摘要
讨论了在长连接查询中如何改进传统的两个关系连接操作以及多个连接操作的定序问题.
Our discussion focus as on how to improve the traditional join between two relations and how to order the joins.
出处
《上海师范大学学报(自然科学版)》
1996年第4期47-53,共7页
Journal of Shanghai Normal University(Natural Sciences)
关键词
长连接
优化
多路连接
large join
optimization
multi-wad join