These are functions that calculate data to create summaries from the results. Additional functions that are not listed in the list box might be also possible. These depend on the specific database system in use and on the current state of the Base driver.
函数，以上函数就是所谓的聚合函数。这些就是用于从结果中计算数据以创建汇总的函数。列表框中没有列出的其他函数也是可能的。这与指定使用何种数据库系统以及 Base 驱动的当前状态有关。