[Koha-bugs] [Bug 10961] Error in GetMarcBiblio can cause severe data loss

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=10961

M. Tompsett <mtompset at hotmail.com> changed:

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--- Comment #7 from M. Tompsett <mtompset at hotmail.com> ---
Created attachment 41182
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http://bugs.koha-community.org/bugzilla3/attachment.cgi?id=41182&action=edit
Bug 10961 - Error in GetMarcBiblio can cause severe data loss

A bug in GetMarcBiblio can cause severe data loss if your database has
records where the biblionumber and biblioitemnumber do not match and the
script misc/batchRebuildBiblioTables.pl is run.

The Biblio::GetMarcBiblio makes a kall to
C4::Biblio::_koha_marc_update_bib_ids which passes the biblionumber as
both the biblionumber *and the biblioitemnumber*.

Thus, if your biblio and biblioitem numbers are not always equal, you
will end up with a record where the biblioitemnumber is incorrect in the
record!

This is usually not a severe issue, but since batchRebuildBiblioTables
uses that record to update the database tables, it ends up updating the
wrong biblioitem row!

NOTE: What a horrible, horrible typo that was. Tested this with the
      second patch.

Signed-off-by: Mark Tompsett <mtompset at hotmail.com>

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