Once you've got a list of duplicates, I suppose the best way is to address them individually, merging records that have item numbers, deleting records that don't? That could take some time. What is the best way to handle batch uploads that will result in a large number of duplicates. In one case, we'll be adding another 'branch' which will probably be at least 50% duplicates. In the second case, there will be overlap with a special collection already in Koha. Any advice on how to proceed would be appreciated. I'm not the IT half of the team, but I have a sneaky feeling this might involve doing some digital wizardry outside of Koha. Elaine On Sat, Mar 3, 2012 at 6:33 PM, Nicole Engard <nengard@gmail.com> wrote:

You can only do it from the command line. I would back up your database and then to delete the bibs without items run these three commands in MySQL:

INSERT into deletedbiblio (SELECT * FROM biblio where biblionumber NOT IN (SELECT biblionumber from items)); INSERT into deletedbiblioitems (SELECT * FROM biblioitems where biblionumber NOT IN (SELECT biblionumber from items)); DELETE FROM biblio where biblionumber NOT IN (SELECT biblionumber from items);

For duplicates, there are reports to help you find duplicates but not to delete them: http://wiki.koha-community.org/wiki/SQL_Reports_Library#Duplicate_titles

Nicole

On Tue, Feb 28, 2012 at 9:02 AM, <makekee@msu.ac.zw> wrote:

...

We have a number of duplicate entries in our database and also biblios without items. I would like to know how how one can bulk delete duplicate records and all the biblios with no items attached. Thanks in advance

Ephraim Makeke

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-- Elaine Bradtke Data Wrangler VWML English Folk Dance and Song Society | http://www.efdss.org Cecil Sharp House, 2 Regent's Park Road, London NW1 7AY Tel +44 (0) 20 7485 2206 (This number is for the English Folk Dance and Song Society in London, England. If you wish to phone me personally, send an e-mail first. I work off site) -------------------------------------------------------------------------- Registered Company No. 297142 Charity Registered in England and Wales No. 305999 --------------------------------------------------------------------------- "Writing about music is like dancing about architecture" --Elvis Costello (Musician magazine No. 60 (October 1983), p. 52)