Hi,
I run into an unexpected behaviour for Solr with query parsing. I need
to fetch article which contain several expressions. However, I noticed the
following behaviour:
- when I fetch results for query A I get a number of results X
- for query B I get a number of results Y
- for query A B and also for A OR B I get results less then X and Y - I
expected that in this case I receive the union of results.
For some queries containing more expressions, but of which all give results
separately I even get zero results. What is the reason for this? How can I
reach to get all the results for the query with more expressions?
My schema for the index and query is pretty simple:
<fieldtype class='solr.TextField' name='text'
positionIncrementGap='100'>
<analyzer>
<charFilter class="solr.MappingCharFilterFactory"
mapping="mapping-ISOLatin1Accent.txt"/>
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class='solr.LowerCaseFilterFactory' />
</analyzer>
</fieldtype>
Thanks for your help!
Georg
