Hi, all

I have some near query like "analyze term"~2.
That is matched in that order.
But I want to search regardless of order.
So far, I just queried "analyze term"~2 OR "term analyze"~2.
Is there a better way than what i did?

Thanks in advance.
Jason.

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> I have some near query like "analyze term"~2.
> That is matched in that order.
> But I want to search regardless of order.
> So far, I just queried "analyze term"~2 OR "term
> analyze"~2.
> Is there a better way than what i did?

I think, PhraseQuery should be unordered with slop values grater than 0.
(but it is ordered with slope value of 0)
The following two queries should return same result set:

"analyze term"~2
"term analyze"~2

Isn't that the case for you?

"analyze term"~2
"term analyze"~2

In my case, two queries return different result set.
Isn't that in your case?

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> "analyze term"~2
> "term analyze"~2
>
> In my case, two queries return different result set.
> Isn't that in your case?

Hmm you are right, I tested with a trunk instance using lucene query parser. Results sets were different. If I am not wrong they were same at some version.

I can suggest you two different solutions :

One is to use SurroundQueryParser where you have explicit control over ordered versus unordered. But it has its own limitations. See below:

http://wiki.apache.org/solr/SurroundQueryParser

Second one : There is an example in lucene in action book about how to override QueryParser and replace PhraseQuery with SpanNearQuery. SpanNearQuery also has a Boolean parameter inOrder, You can use that example code. If you pass false to its constructor you will obtain unordered phrase query. But this second option assumes that you are using lucene query parser. defType=lucene

Thank you for your kind reply.

Is it possible only defType=lucnee in your second suggestion?
I'm using ComplexPhraseQueryParser.
So my defType is "complexphrase".

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> Is it possible only defType=lucnee in your second
> suggestion?
> I'm using ComplexPhraseQueryParser.
> So my defType is "complexphrase".

Oh, then life is easy. Just setting the inOrder parameter to false in solrconfig.xml should do the trick.

<queryParser name="complexphrase" class="org.apache.solr.search.ComplexPhraseQParserPlugin">
    <bool name="inOrder">false</bool>
</queryParser>

Thanks a ton iorixxx.

Jason.
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Which one is better performance of setting inOrder=false in solrconfig.xml
and quering with "A B"~1 AND "B A"~1 if performance differences?

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Just to chime in here... You will get different results
for "A B"~2 and "B A"~2. In the simple two-term case,
changing the order requires an extra move(s). There's
a very good explanation of this in Lucene In Action II.

Best
Erick

On Thu, Oct 20, 2011 at 3:35 PM, Jason, Kim <[EMAIL PROTECTED]> wrote:
> Which one is better performance of setting inOrder=false in solrconfig.xml
> and quering with "A B"~1 AND "B A"~1 if performance differences?
>
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> View this message in context: http://lucene.472066.n3.nabble.com/Question-about-near-query-order-tp3427312p3437701.html
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>