}

			if !isNilPtrValue { // ignore if value is nil
				f := joinFields[idx][len(joinFields[idx])-1]
				db.AddError(f.Set(db.Statement.Context, relValue, values[idx]))
			}
		}

		// release data to pool
		field.NewValuePool.Put(values[idx])
	}
}

// ScanMode scan data mode
type ScanMode uint8

// scan modes
const (
	ScanInitialized         ScanMode = 1 << 0 // 1

		t.Errorf("Table with escape character, got %v", r.Statement.SQL.String())
	}

	r = dryDB.Table("`people`").Table("`user`").Find(&User{}).Statement
	if !regexp.MustCompile("SELECT \\* FROM `user`").MatchString(r.Statement.SQL.String()) {
		t.Errorf("Table with escape character, got %v", r.Statement.SQL.String())
	}

	r = dryDB.Table("people as p").Table("user as u").Find(&User{}).Statement

	if err := DB.AutoMigrate(&MigratePerson{}); err != nil {
		t.Fatalf("Failed to auto migrate, but got error %v", err)
	}

	if !DB.Migrator().HasConstraint("migrate_people", "fk_migrate_people_manager") {
		t.Fatalf("Failed to find has one constraint between people and managers")
	}
}

func TestSmartMigrateColumn(t *testing.T) {
	fullSupported := map[string]bool{"mysql": true, "postgres": true}[DB.Dialector.Name()]

func (field *Field) setupNewValuePool() {
	if field.Serializer != nil {
		serializerValue := reflect.Indirect(reflect.ValueOf(field.Serializer))
		serializerType := serializerValue.Type()
		field.NewValuePool = &sync.Pool{
			New: func() interface{} {
				si := reflect.New(serializerType)
				si.Elem().Set(serializerValue)
				return &serializer{
					Field:      field,
					Serializer: si.Interface().(SerializerInterface),
				}