multi-field MARC expert search can have extra results

[Galen Charlton]

The 'MARC expert' search defaults to implicit AND if more than one search term is supplied. However, if a record has multiple copies of a given search term, it can incorrectly end up in the search results. For example, suppose there are two records in the database:

650 $a Love $v Juvenile sound recordings

and

650 $a Peace $v Juvenile sound recordings
650 $a War $v Juvenile sound records.

A MARC expert search on 650 $a = Love and 650 $v = Juvenile sound records will return both records, when it should just return the first. Due to a glitch in the underlying query, the fact that the second record has two 650 $v subfields with the desired value causes the record to be included in the search results.

Evergreen 2.0.4+