statistical query的意思|示意

Query drill down allows you to gather statistical information about each SQL statement executed on the system and analyze statement history.

可以通过查询钻取特性收集关于系统上执行的每个sql语句的统计信息并分析语句历史。

Center workstation tests and controls field equipments, dynamically display technical process, field data and alarm, production information for statistical query.

中心工作站检测和控制现场设备，动态显示工艺流程和现场数据并报警，统计查询生产信息等。

Using the same sample data just discussed above, the following illustrates the difference in cardinality estimates with and without the use of statistical view for the query.

下面使用以上讨论的相同的示例数据，阐释在使用和不使用查询的统计视图的情况下基数估计的差别。