摘要
数据库查询优化一直是数据库界研究的热点 ,而查询谓词中带有用户函数的优化问题 ,尤其是存在以满足用户函数为条件的连接运算的优化工作尚未深入进行 .文中给出了这类问题的详细讨论 ,并设计了优化方案 .
The query optimization has all the while been a hotspot in the realm of database,while the problem of query optimization revolving user defined functions has never been efficiently solved.Especially when the function is the condition for joins.In this article, authors make deep research in the problem, and present a plan for the optimization.
出处
《计算机学报》
EI
CSCD
北大核心
2000年第10期1072-1077,共6页
Chinese Journal of Computers
基金
霍英东基金!(710 6 5 )资助
