wantTrailers := make(map[string]struct{}, len(cr.trailers))
	for k := range cr.trailers {
		wantTrailers[strings.ToLower(k)] = struct{}{}
	}
	input := bufio.NewScanner(bytes.NewReader(valueBuffer.Bytes()))
	for input.Scan() {
		line := strings.TrimSpace(input.Text())
		if line == "" {
			continue
		}
		// Find first separator.
		idx := strings.IndexByte(line, trailerKVSeparator[0])
		if idx <= 0 || idx >= len(line) {

							fieldValue.Set(reflect.New(field.FieldType.Elem()))
						}

						if valuer, ok := v.(driver.Valuer); ok {
							v, _ = valuer.Value()
						}

						err = fieldValue.Interface().(sql.Scanner).Scan(v)
					}
					return
				}
			} else if _, ok := fieldValue.Interface().(sql.Scanner); ok {
				// struct scanner
				field.Set = func(ctx context.Context, value reflect.Value, v interface{}) (err error) {

				}

				return
			}

			if rows, err := db.Statement.ConnPool.QueryContext(db.Statement.Context, db.Statement.SQL.String(), db.Statement.Vars...); db.AddError(err) == nil {
				gorm.Scan(rows, db, mode)
				db.AddError(rows.Close())
			}
		}
	}
}

func AfterDelete(db *gorm.DB) {
	if db.Error == nil && db.Statement.Schema != nil && !db.Statement.SkipHooks && db.Statement.Schema.AfterDelete {

	}

	var maxId int64
	userTable := func(db *gorm.DB) *gorm.DB {
		return db.WithContext(context.Background()).Table("users")
	}
	if err := DB.Scopes(userTable).Select("max(id)").Scan(&maxId).Error; err != nil {
		t.Errorf("select max(id)")
	}
}

func TestComplexScopes(t *testing.T) {
	tests := []struct {
		name     string
		queryFn  func(tx *gorm.DB) *gorm.DB
		expected string
	}{

pkg crypto/tls, method (*ClientHelloInfo) Context() context.Context
pkg crypto/tls, method (*Conn) HandshakeContext(context.Context) error
pkg database/sql, method (*NullByte) Scan(interface{}) error
pkg database/sql, method (*NullInt16) Scan(interface{}) error
pkg database/sql, method (NullByte) Value() (driver.Value, error)
pkg database/sql, method (NullInt16) Value() (driver.Value, error)
pkg database/sql, type NullByte struct

	TotalUsedCapacity uint64 `json:"usedCapacity,omitempty"`
	TotalFreeCapacity uint64 `json:"freeCapacity,omitempty"`

	// LastUpdate is the timestamp of when the data usage info was last updated.
	// This does not indicate a full scan.
	LastUpdate time.Time `json:"lastUpdate"`

	// Objects total count across all buckets
	ObjectsTotalCount uint64 `json:"objectsCount"`

	// Versions total count across all buckets

	EnvIOCount      = "MINIO_HEAL_MAX_IO"
	EnvDriveWorkers = "MINIO_HEAL_DRIVE_WORKERS"
)

var configMutex sync.RWMutex

// Config represents the heal settings.
type Config struct {
	// Bitrot will perform bitrot scan on local disk when checking objects.
	Bitrot string `json:"bitrotscan"`

	// maximum sleep duration between objects to slow down heal operation.
	Sleep   time.Duration `json:"sleep"`
	IOCount int           `json:"iocount"`

	}
}

type DoubleInt64 struct {
	data int64
}

func (t *DoubleInt64) Scan(val interface{}) error {
	switch v := val.(type) {
	case int64:
		t.data = v * 2
		return nil
	default:
		return fmt.Errorf("DoubleInt64 cant not scan with:%v", v)
	}
}

// https://github.com/go-gorm/gorm/issues/5091
func TestQueryScannerWithSingleColumn(t *testing.T) {

	result := make(map[string]string)

	mountInfo, err := os.Open("/proc/self/mountinfo")
	if err != nil {
		return nil, err
	}
	defer mountInfo.Close()

	scanner := bufio.NewScanner(mountInfo)
	for scanner.Scan() {
		s := strings.Split(scanner.Text(), " ")
		if len(s) != 11 {
			return nil, errors.New("unsupported /proc/self/mountinfo format")
		}
		result[s[2]] = s[9]
	}

	if err := scanner.Err(); err != nil {

	rows, ok := tx.Statement.Dest.(*sql.Rows)
	if !ok && tx.DryRun && tx.Error == nil {
		tx.Error = ErrDryRunModeUnsupported
	}
	return rows, tx.Error
}

// Scan scans selected value to the struct dest
func (db *DB) Scan(dest interface{}) (tx *DB) {
	config := *db.Config
	currentLogger, newLogger := config.Logger, logger.Recorder.New()
	config.Logger = newLogger

	tx = db.getInstance()