FIRST(author.value) AS author,
publisher.value AS publisher,
SUBSTRING(pubdate.value FROM $$\d+$$) AS pubdate,
- ARRAY_ACCUM( SUBSTRING(isbn.value FROM $$^\S+$$) ) AS isbn,
- ARRAY_ACCUM( SUBSTRING(issn.value FROM $$^\S+$$) ) AS issn
+ ARRAY_ACCUM( DISTINCT SUBSTRING(isbn.value FROM $$^\S+$$) ) AS isbn,
+ ARRAY_ACCUM( DISTINCT SUBSTRING(issn.value FROM $$^\S+$$) ) AS issn
FROM biblio.record_entry r
LEFT JOIN metabib.full_rec title ON (r.id = title.record AND title.tag = '245' AND title.subfield = 'a')
LEFT JOIN metabib.full_rec author ON (r.id = author.record AND author.tag IN ('100','110','111') AND author.subfield = 'a')