[Koha] Cleaning up lots of duplicates

[Chris Cormack]

* Carlock, Ruth (rmcarlock at york.edu) wrote:
> For ebooks more than one record is like having more than one copy of that
> title which allows more than one person use that title at the same time.
> For print titles we can add all of the copies to the same bibliographic
> record.
> But it takes two bibliographic records for two people to use the same title
> of an eBook at the same time.  It requires a URL to access an eBook and a
> URL can only be used by one person at a time. I assume that is the reason
> you are finding duplicate bib records for ebooks.

Even if you buy into the artificial idea that publishes enforce that bits are scarce
and 2 people can't be using the same resource at the same time.
(Which as libraries we should be pointing is absurd at all possible opportunities)

Then why wouldn't you just put the url at 952u, you can then have multiple items with
different urls attached to the same bibliograhic record.

Chris

> 
> On Aug 3, 2016 9:43 PM, "Coehoorn, Joel" <jcoehoorn at york.edu> wrote:
> 
> > I've discovered that due to a mistake a long time ago we have a large
> > number of duplicate biblio records in our system... as much as a third of
> > our database, or possibly even more.  This is old enough that the import
> > marc batches have long been cleaned.
> >
> > The good news is these duplicates are mainly for e-Books licensed through
> > EBSCO, where we just have the bibliographic record and an 856u field, with
> > no items or circulation.
> >
> > If I could construct an SQL query to identify the duplicate biblionumbers
> > (excluding an original record for each item), would it be enough to delete
> > database records from the items, biblioitems, and biblios tables, and then
> > fully re-index Zebra to clean these up?
> >
> > Joel Coehoorn
> > Director of Information Technology
> > 402.363.5603
> > *jcoehoorn at york.edu <jcoehoorn at york.edu>*
> >
> > The mission of York College is to transform lives through
> > Christ-centered education and to equip students for lifelong service to
> > God, family, and society
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-- 
Chris Cormack
Catalyst IT Ltd.
+64 4 803 2238
PO Box 11-053, Manners St, Wellington 6142, New Zealand
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