func (f *Int64) Scan(v interface{}) error {
	y := v.(int64)
	*f = Int64(y + 1)
	return nil
}

func TestPluck(t *testing.T) {
	users := []*User{
		GetUser("pluck-user1", Config{}),
		GetUser("pluck-user2", Config{}),
		GetUser("pluck-user3", Config{}),
	}

	DB.Create(&users)

	var names []string