The third part is of vital importance in query tuning, because it provides us with a great deal of useful information, such as the data access method and the join method that the query used.
第三部分对于查询调优是至关重要的，因为它提供了大量有用的信息，例如查询所用的数据访问方法和连接方法。
The third part is of vital importance in query tuning, because it provides us with a great deal of useful information, such as the data access method and the join method that the query used.
第三部分对于查询调优是至关重要的，因为它提供了大量有用的信息，例如查询所用的数据访问方法和连接方法。
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