"INSERT INTO `users` (`created_at`,`updated_at`,`deleted_at`,`name`,`age`,`birthday`,`company_id`,`manager_id`,`active`) VALUES (?,?,?,?,?,?,?,?,?)",
			"SELECT * FROM `users` WHERE name = ? AND `users`.`deleted_at` IS NULL ORDER BY `users`.`id` LIMIT ?",
			"SELECT * FROM `users` WHERE name = ? AND `users`.`deleted_at` IS NULL ORDER BY `users`.`id` LIMIT ?",

		t.Fatalf("invalid sql generated, got %v", sql)
	}

	sql = DB.Session(&gorm.Session{DryRun: true}).Table("user u").Select("name").Find(&User{}).Statement.SQL.String()
	if !regexp.MustCompile(`SELECT .name. FROM user u WHERE .u.\..deleted_at. IS NULL`).MatchString(sql) {
		t.Errorf("Table with escape character, got %v", sql)
	}

func (JSONSerializer) Value(ctx context.Context, field *Field, dst reflect.Value, fieldValue interface{}) (interface{}, error) {
	result, err := json.Marshal(fieldValue)
	if string(result) == "null" {
		if field.TagSettings["NOT NULL"] != "" {
			return "", nil
		}
		return nil, err
	}
	return string(result), err
}

// UnixSecondSerializer json serializer
type UnixSecondSerializer struct{}

func TestHasManyAssociationUnscoped(t *testing.T) {
	type ItemContent struct {
		gorm.Model
		ItemID       uint   `gorm:"not null"`
		Name         string `gorm:"not null;type:varchar(50)"`
		LanguageCode string `gorm:"not null;type:varchar(2)"`
	}
	type Item struct {
		gorm.Model
		Logo     string        `gorm:"not null;type:varchar(50)"`
		Contents []ItemContent `gorm:"foreignKey:ItemID"`
	}

	tx := DB.Session(&gorm.Session{})

	}
}

type Content struct {
	Content interface{} `gorm:"type:String"`
}

func (c Content) Value() (driver.Value, error) {
	// mssql driver with issue on handling null bytes https://github.com/denisenkom/go-mssqldb/issues/530,
	b, err := json.Marshal(c)
	return string(b[:]), err
}

func (c *Content) Scan(src interface{}) error {
	var value Content
	str, ok := src.(string)

	}
}

func TestCreateOnConflictWithDefaultNull(t *testing.T) {
	type OnConflictUser struct {
		ID     string
		Name   string `gorm:"default:null"`
		Email  string
		Mobile string `gorm:"default:'133xxxx'"`
	}

	err := DB.Migrator().DropTable(&OnConflictUser{})
	AssertEqual(t, err, nil)
	err = DB.AutoMigrate(&OnConflictUser{})

		currentDefaultNotNull := field.HasDefaultValue && (field.DefaultValueInterface != nil || !strings.EqualFold(field.DefaultValue, "NULL"))
		dv, dvNotNull := columnType.DefaultValue()
		if dvNotNull && !currentDefaultNotNull {
			// default value -> null
			alterColumn = true
		} else if !dvNotNull && currentDefaultNotNull {
			// null -> default value
			alterColumn = true
		} else if currentDefaultNotNull || dvNotNull {

		if rv.Len() == 0 {
			builder.WriteString(" IN (NULL)")
		} else {
			builder.WriteString(" IN (")
			for i := 0; i < rv.Len(); i++ {
				if i > 0 {
					builder.WriteByte(',')
				}
				builder.AddVar(builder, rv.Index(i).Interface())
			}
			builder.WriteByte(')')
		}
	default:
		if eqNil(eq.Value) {
			builder.WriteString(" IS NULL")
		} else {
			builder.WriteString(" = ")

	if DB.Dialector.Name() != "postgres" {
		t.Skip()
	}

	type Harumph struct {
		gorm.Model
		Name      string         `gorm:"check:name_checker,name <> ''"`
		Test      uuid.UUID      `gorm:"type:uuid;not null;default:gen_random_uuid()"`
		CreatedAt time.Time      `gorm:"type:TIMESTAMP WITHOUT TIME ZONE"`
		UpdatedAt time.Time      `gorm:"type:TIMESTAMP WITHOUT TIME ZONE;default:current_timestamp"`

}

func (n DeletedAt) MarshalJSON() ([]byte, error) {
	if n.Valid {
		return json.Marshal(n.Time)
	}
	return json.Marshal(nil)
}

func (n *DeletedAt) UnmarshalJSON(b []byte) error {
	if string(b) == "null" {
		n.Valid = false
		return nil
	}
	err := json.Unmarshal(b, &n.Time)
	if err == nil {
		n.Valid = true
	}
	return err
}

func (DeletedAt) QueryClauses(f *schema.Field) []clause.Interface {