//	db.Where(User{Name: "jinzhu"}).Attrs(User{Email: "******@****.***"}).FirstOrInit(&user)
//	// user -> User{Name: "jinzhu", Age: 20}
//
// [FirstOrCreate]: https://gorm.io/docs/advanced_query.html#FirstOrCreate
// [FirstOrInit]: https://gorm.io/docs/advanced_query.html#FirstOrInit
func (db *DB) Attrs(attrs ...interface{}) (tx *DB) {
	tx = db.getInstance()
	tx.Statement.attrs = attrs
	return
}

//	q := DB.Model(&User{})
//	DB.Debug().Migrator().CreateView("user_view", gorm.ViewOption{Query: q, Replace: true, CheckOption: "WITH CHECK OPTION"})
//
// [subquery]: https://gorm.io/docs/advanced_query.html#SubQuery
func (m Migrator) CreateView(name string, option gorm.ViewOption) error {
	if option.Query == nil {
		return gorm.ErrSubQueryRequired
	}

	sql := new(strings.Builder)

	if err != nil {
		t.Fatalf("failed to parse pointer user, got error %v", err)
	}

	// check schema
	checkSchema(t, user, schema.Schema{Name: "AdvancedDataTypeUser", Table: "advanced_data_type_users"}, []string{"ID"})

	// check fields
	fields := []schema.Field{