if err := DB.Exec(sql).Error; err != nil {
		t.Errorf("Failed, got error: %v", err)
	}

	session := DB.Session(&gorm.Session{Logger: Tracer{
		Logger: DB.Config.Logger,
		Test: func(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
			sql, _ := fc()
			if strings.HasPrefix(sql, "ALTER TABLE") {
				t.Errorf("shouldn't execute: sql=%s", sql)
			}
		},

		t.Errorf("Failed to batch find, got error %v, rows affected: %v", result.Error, result.RowsAffected)
	}

	var sub3 []User
	if result := DB.Limit(4).Where("name = ?", users[0].Name).FindInBatches(&sub3, 2, func(tx *gorm.DB, batch int) error {
		return nil
	}); result.Error != nil || result.RowsAffected != 4 {
		t.Errorf("Failed to batch find, got error %v, rows affected: %v", result.Error, result.RowsAffected)
	}
}