Your query:

SELECT author, title, type, year, publication, abbrev_journal, volume, issue, pages, keywords, abstract, address, corporate_author, thesis, publisher, place, editor, language, summary_language, orig_title, series_editor, series_title, abbrev_series_title, series_volume, series_issue, edition, issn, isbn, medium, area, expedition, conference, notes, approved, call_number, serial, marked, copy, selected, user_keys, user_notes, user_file, user_groups, cite_key, related, orig_record, serial, file, url, doi, isbn, type FROM refs WHERE serial = 221 ORDER BY author, year DESC, publication

caused the following error:
Quick Search:
Error 1054 : Unknown column 'marked' in 'field list'
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