if count1 != 1 || count2 != 3 {
		t.Errorf("multiple count in chain should works")
	}

	tx := DB.Model(&User{}).Where("name = ?", user1.Name).Session(&gorm.Session{})
	tx.Count(&count1)
	tx.Or("name in ?", []string{user2.Name, user3.Name}).Count(&count2)
	if count1 != 1 || count2 != 3 {
		t.Errorf("count after new session should works")

		t.Errorf("Should got error with invalid SQL")
	}

	var count1, count2 int64
	DB.Model(&User{}).Count(&count1)
	if count1 <= 0 {
		t.Errorf("Should find some users")
	}

	if DB.Where("name = ?", "jinzhu; delete * from users").First(&User{}).Error == nil {
		t.Errorf("Should got error with invalid SQL")
	}

	DB.Model(&User{}).Count(&count2)
	if count1 != count2 {
		t.Errorf("No user should not be deleted by invalid SQL")
	}

	}

	var count int64
	if err := DB.Model(&User{}).Where("name like ?", "distinct%").Count(&count).Error; err != nil || count != 5 {
		t.Errorf("failed to query users count, got error: %v, count: %v", err, count)
	}

	if err := DB.Model(&User{}).Distinct("name").Where("name like ?", "distinct%").Count(&count).Error; err != nil || count != 3 {
		t.Errorf("failed to query users count, got error: %v, count %v", err, count)
	}

func (m Migrator) HasTable(value interface{}) bool {
	var count int64

	m.RunWithValue(value, func(stmt *gorm.Statement) error {
		currentDatabase := m.DB.Migrator().CurrentDatabase()
		return m.DB.Raw("SELECT count(*) FROM information_schema.tables WHERE table_schema = ? AND table_name = ? AND table_type = ?", currentDatabase, stmt.Table, "BASE TABLE").Row().Scan(&count)
	})

	return count > 0
}

			if len(relations.Relations) != len(rs.Relations) {
				t.Errorf("schema relations count don't match, expects %d, got %d", len(rs.Relations), len(relations.Relations))
			}
			if len(relations.EmbeddedRelations) != len(rs.EmbeddedRelations) {
				t.Errorf("schema embedded relations count don't match, expects %d, got %d", len(rs.EmbeddedRelations), len(relations.EmbeddedRelations))
			}

//
// [docs]: https://gorm.io/docs/query.html#Conditions
func (db *DB) Where(query interface{}, args ...interface{}) (tx *DB) {
	tx = db.getInstance()
	if conds := tx.Statement.BuildCondition(query, args...); len(conds) > 0 {
		tx.Statement.AddClause(clause.Where{Exprs: conds})
	}
	return
}

// Not add NOT conditions
//
// Not works similarly to where, and has the same syntax.
//

// time if null.
func (db *DB) Delete(value interface{}, conds ...interface{}) (tx *DB) {
	tx = db.getInstance()
	if len(conds) > 0 {
		if exprs := tx.Statement.BuildCondition(conds[0], conds[1:]...); len(exprs) > 0 {
			tx.Statement.AddClause(clause.Where{Exprs: exprs})
		}
	}
	tx.Statement.Dest = value
	return tx.callbacks.Delete().Execute(tx)
}

func (db *DB) Count(count *int64) (tx *DB) {
	tx = db.getInstance()

	ErrInvalidValueOfLength = errors.New("invalid association values, length doesn't match")
	// ErrPreloadNotAllowed preload is not allowed when count is used
	ErrPreloadNotAllowed = errors.New("preload is not allowed when count is used")
	// ErrDuplicatedKey occurs when there is a unique key constraint violation
	ErrDuplicatedKey = errors.New("duplicated key not allowed")

	}

	DB.Migrator().DropTable(&CustomizeColumn{})
	DB.AutoMigrate(&CustomizeColumn{})

	expected := "foo"
	now := time.Now()
	cc := CustomizeColumn{ID: 666, Name: expected, Date: &now}

	if count := DB.Create(&cc).RowsAffected; count != 1 {
		t.Error("There should be one record be affected when create record")
	}

	var cc1 CustomizeColumn
	DB.First(&cc1, "mapped_name = ?", "foo")

	if cc1.Name != expected {

	if err := DB.Migrator().CreateView("users_pets", gorm.ViewOption{Query: query}); err != nil {
		t.Fatalf("Failed to crate view, got %v", err)
	}

	var count int64
	if err := DB.Table("users_pets").Count(&count).Error; err != nil {
		t.Fatalf("should found created view")
	}

	if err := DB.Migrator().DropView("users_pets"); err != nil {
		t.Fatalf("Failed to drop view, got %v", err)
	}