func (c chainG[T]) Omit(columns ...string) ChainInterface[T] {
	return c.with(func(db *DB) *DB {
		return db.Omit(columns...)
	})
}

func (c chainG[T]) MapColumns(m map[string]string) ChainInterface[T] {
	return c.with(func(db *DB) *DB {
		return db.MapColumns(m)
	})
}

func (c chainG[T]) Distinct(args ...interface{}) ChainInterface[T] {
	return c.with(func(db *DB) *DB {
		return db.Distinct(args...)
	})
}

		t.Errorf("found invalid user, got %v, expect %v", result, user)
	}

	mapResult, err := gorm.G[map[string]interface{}](DB).Table("users").Where("name = ?", user.Name).MapColumns(map[string]string{"name": "user_name"}).Take(ctx)
	if v := mapResult["user_name"]; fmt.Sprint(v) != user.Name {
		t.Errorf("failed to find map results, got %v, err %v", mapResult, err)
	}
}

	DB.Save(&user)

	type result struct {
		Name     string
		Nickname string
		Age      uint
	}
	var res result
	DB.Table("users").Where("name = ?", user.Name).MapColumns(map[string]string{"name": "nickname"}).Scan(&res)
	if res.Nickname != user.Name {
		t.Errorf("Expected res.Nickname to be %s, but got %s", user.Name, res.Nickname)
	}
	if res.Name != "" {