Invention Grant
US08825629B2 Method for index tuning of a SQL statement, and index merging for a multi-statement SQL workload, using a cost-based relational query optimizer 有权
使用基于成本的关系查询优化器对SQL语句进行索引调整的方法以及多语句SQL工作负载的索引合并

Method for index tuning of a SQL statement, and index merging for a multi-statement SQL workload, using a cost-based relational query optimizer
Abstract:
An access structure analysis method is interspersed with the query optimization process. The method can determine the ideal combination of access structures, including both materialized views and indexes, for a given database workload. The interspersed structure analysis method can include advanced transformations like view merging, star transformation, bitmap access plans, query rewrite using materialized views, for example. The method may be performed using the query optimizer's rules as heuristics to guide the index candidate generation process.
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