学籍管理vfp代码,以学生、教师、课程、选课为对象-Student Management vfp code, students, teachers, curriculum, course selection object

这个源代码是一个SQL查询,主要用途是用于查询手机用户每月流量和短信的行为。当避免不必要的连接。-This source code is a SQL query, the main purpose is to query mobile phone users monthly flow and the behavior of the SMS. As to avoid unnecessary connection.