func (p pg) Put(tx *postgres.DBTx, info FileInfo, r io.Reader, append bool) error { if !append { if err := tx.QueryRow("UPDATE files SET file_oid = lo_create(0) WHERE file_id = $1 RETURNING file_oid", info.ID).Scan(&info.Oid); err != nil { return err } } lo, err := tx.LargeObjects() if err != nil { return err } obj, err := lo.Open(*info.Oid, pgx.LargeObjectModeWrite) if err != nil { return err } if append { obj.Seek(info.Size, os.SEEK_SET) } if _, err := io.Copy(obj, r); err != nil { return err } return nil }