}
	inferTypeAsString(v1)
	s, ok := v1.ToString()
	if !ok {
		err := fmt.Errorf("Incorrect argument type passed to %s", sqlFnSubstring)
		return nil, errIncorrectSQLFunctionArgumentType(err)
	}

	// Assemble other arguments
	arg2, arg3 := e.From, e.For
	// Check if the second form of substring is being used
	if e.From == nil {
		arg2, arg3 = e.Arg2, e.Arg3
	}

	// Evaluate the FROM argument

				if err == nil {
					decReader = rah
					cFns = append([]func(){func() {
						rah.Close()
					}}, cFns...)
				}
			}
			oi.Size = decLength

			// Assemble the GetObjectReader
			r = &GetObjectReader{
				ObjInfo:    oi,
				Reader:     decReader,
				cleanUpFns: cFns,
			}
			return r, nil
		}

	case isEncrypted:
		var seqNumber uint32

		err = errors.New("Object is not encrypted")
		return
	}

	if rs == nil {
		// No range, so offsets refer to the whole object.
		return 0, o.Size, 0, 0, 0, nil
	}

	// Assemble slice of (decrypted) part sizes in `sizes`
	var sizes []int64
	var decObjSize int64 // decrypted total object size
	if o.isMultipart() {
		sizes = make([]int64, len(o.Parts))
		for i, part := range o.Parts {