对SQL查询结果分组的过程分析与设计

The Analysis and Design about the Grouping Process of the Result of Searching SQL

对SQL中的查询结果进行分组情况下DBMS的执行过程进行分析，并对查询结果分组进行设计。

In the condition of grouping the searching result of SQL,I will analyze the executing process and Provide example about the design of grouping the searching result.