var config = DBConfig{
	Host:    "localhost",
	Port:    3308,
	Name:    "root",
	Pass:    "123456",
	DBName:  "sgfoot",
	Charset: "utf8mb4",
}
var (
	MasterDB Modeler //定义主DB
)

func init() {
	db := InitDB(config)
	model := NewDB(db)
	MasterDB = model
}

ls, err := MasterDB.Find("select * from book")

ls, err := MasterDB.First("select * from book where id = ?", 1)

ls, err := MasterDB.Pluck("select * from book where id = ?", "book_name", 3)

ls, err := MasterDB.Insert("insert into book set book_name=?, book_author=?, book_province=?", "论语", "孔子", "山东")

ls, err := MasterDB.Update("update book set book_name=? where id=?", "国学-论语", 3)

ls, err := MasterDB.Delete("delete from book where id = ?", 1)