t.Fatalf("errors happened when update: %v", err)
	}

	var user3 User
	DB.Preload("Account").Find(&user3, "id = ?", user.ID)

	CheckUser(t, user2, user3)
	lastUpdatedAt := user2.Account.UpdatedAt
	time.Sleep(time.Second)

	if err := DB.Session(&gorm.Session{FullSaveAssociations: true}).Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user4 User

	user := *GetUser("prepared_stmt", Config{})

	txCtx.Create(&user)

	var result1 User
	if err := txCtx.Find(&result1, user.ID).Error; err != nil {
		t.Fatalf("no error should happen but got %v", err)
	}

	time.Sleep(time.Second)

	var result2 User
	if err := tx.Find(&result2, user.ID).Error; err != nil {
		t.Fatalf("no error should happen but got %v", err)
	}

	user2 := *GetUser("prepared_stmt2", Config{})

	user.Age = 20
	if err := DB.Create(&user).Error; err != nil {
		t.Errorf("failed to create user, got error %v", err)
	}

	var user2 User
	DB.First(&user2, user.ID)
	user2.Age = 30
	time.Sleep(time.Second)
	if err := DB.Clauses(clause.OnConflict{UpdateAll: true}).Create(&user2).Error; err != nil {
		t.Fatalf("failed to onconflict create user, got error %v", err)
	} else {
		var user3 User
		DB.First(&user3, user.ID)

	var user1, user2 User
	DB.First(&user1, users[0].ID)
	DB.First(&user2, users[1].ID)
	CheckUser(t, user1, *users[0])
	CheckUser(t, user2, *users[1])

	// update with struct
	time.Sleep(1 * time.Second)
	DB.Table("users").Where("name in ?", []string{users[1].Name}).Updates(User{Name: "updates_02_newname"})

	var user3 User
	if err := DB.First(&user3, "name = ?", "updates_02_newname").Error; err != nil {