自己写的用于MYSQL数据库数据表的增删改查基本操作例程，QT的MYSQL接口需要自己编译，编译方法网上很多，编译完成后该程序方可使用(Write their own for MYSQL database data table additions and deletions to check the basic operation routines, QT MYSQL interface need to compile their own, compiled methods online many, compiled after the program can be used)