APPARATUS AND METHOD FOR OPTIMIZING A COMPUTER DATABASE QUERY THAT FETCHES N ROWS
摘要:
An apparatus and method to optimize a query access plan in a computer database system. In preferred embodiments, the query optimizer determines the query can be optimized and generates for the query an optimized access plan that eliminates records defined by a Where clause and one or more ordering criteria prior to ordering the records (sorting or grouping) and then returning a first n rows.
公开/授权文献
信息查询
0/0