migrate

type AddColumnSample struct {
	ID   int64  `meddler:"id,pk"`
	Imel string `meddler:"imel"`
	Name string `meddler:"name"`
	Url  string `meddler:"url"`
	Num  int64  `meddler:"num"`
}

type RenameSample struct {
	ID    int64  `meddler:"id,pk"`
	Email string `meddler:"email"`
	Name  string `meddler:"name"`
}

type Sample struct {
	ID   int64  `meddler:"id,pk"`
	Imel string `meddler:"imel"`
	Name string `meddler:"name"`
}