access path selection的意思|示意

In plan optimization module, the access path selection and the account method of cost evaluation are discussed in detail.

在计划优化模块中，详细讨论了存取路径的选择和代价评估的计算方法。

In that case, reorganizing the index might lead to its selection as part of a better-performing query access path.

在这种情况下，重新组织索引可能会影响DB2的选择，可能产生性能更好的查询访问路径。

In this paper, first the query technology on database is analysed, then two optimization methods are offered: the disintegration query and the best access path selection.

本文对数据库的查询技术进行分析，给出两种优化方法：分解查询和选择最优存取路径。

Other considerations for access path selection.

选择访问路径的其他影响因素。

Before access path selection, the DB2 optimizer transforms SQL statements into forms that are semantically identical, such as by using predicate pushdown or predicate transitive closure.

在选择访问路径之前，DB 2优化器将sql语句转换成语意上一致的形式，例如使用谓词下推或谓词传递闭包。

The SQL statement itself also impacts the access path selection.

sql语句本身也会影响访问路径选择。