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From Shawn Heisey <apa...@elyograg.org>
Subject Re: Solr Full text search
Date Thu, 22 Oct 2015 16:50:45 GMT
On 10/22/2015 10:37 AM, vitaly bulgakov wrote:
> But it returns no results when the query has a term which is not in a
> document. 
> Say searching for "building constructor" I get a result, but
> searching for "good building constructor" returns no results because there
> are no documents containing all three terms. 
> 
> What should I do to be able to search ignoring non-existing terms? 

There are two reasons for this to fail.

One reason is that your query is expecting all three terms to be in the
index -- using AND for the default operator.  This might be done with
the q.op parameter if you're using the standard query parser, or the mm
parameter (set to 100%) if you're using dismax/edismax.  Older versions
of Solr will let you configure the default operator in schema.xml, but
this is discouraged, and I don't think it works in Solr 5.x.  The
default operator defaults to OR, but many people will set that to AND.

The other possible reason is that you are passing the query text with
the quotes, making it a phrase query, which means that the terms must
all be present in the index, must be next to each other, and must be in
that precise order.  If this is the problem, try using q=(good building
constructor) instead of q="good building constructor".

Thanks,
Shawn


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