However, in order to get the best cost estimate, the optimizer needs the values that will be used when the query executes.

然而，为了获得最佳的开销评估值，优化器需要获得查询执行时使用的值。

youdao

However, in order to get the best cost estimate, the optimizer needs the values that will be used when the query executes.

然而，为了获得最佳的开销评估值，优化器需要获得查询执行时使用的值。

youdao