单词：access path
access path的用法和样例：
例句
- These are the basic access path structures.它们是基本访问路径结构。
- The reason for this is that with the wrong datatypes the query optimizer will perform wrong estimates and, consequently, will choose suboptimal access paths.原因是查询优化器会根据错误的数据类型作出错误的估计，从而选择了不理想的访问路径。
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