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Posted to solr-user@lucene.apache.org by amukherjee10 <am...@sapient.com> on 2017/08/21 09:52:03 UTC
Solr sort incorrectly
I am passing a Solr query to fetch few results. Im trying to sort the data
based on field of "string" type - documenttitle_s. Below is the full query
that is getting passed:
http://localhost:8000/solr/web/select?q=**&qt=/standard&qf=documenttitle_t+documentproductname_s+documenttypetext_s+mediacontent_t&start=0&fq=(_latestversion:true)&fq=(_template:f2909e5b58954a53affe8360b275a739)&facet.mincount=0&sort=documenttitle_s+desc&rows=50&facet=true&version=2.2
The issue is that, though most of the data is getting sorted, few results
are causing some anomaly. For example: text1 = onRisks - The variable
affecting choices in the 21st century, text2 = onRisks - Econs, Humans and
the Perception, text3 = Witch Redemption Authorization, text4 = Walk
Infographic - Rising
Ideally text3 should come on top when sorted in desc manner, but text1 is
coming on top.
Can anyone tell me what is going wrong here?
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Re: Solr sort incorrectly
Posted by amukherjee10 <am...@sapient.com>.
Thanks a lot Erick!
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Re: Solr sort incorrectly
Posted by Erick Erickson <er...@gmail.com>.
String types do no analysis whatsoever. Therefore case matters, All
upper case sorts before all lower case. Punctuation matters. Spaces
matter etc.
What people often do is create a special field for sorting and
normalize it by folding case etc. Usually you have to do this on the
input. You might also be able to use a KeywordTokenizer to produce
sortable tokens on text fields that would allow you to put the
normalization into your schema instead. Look for "alphaonlysort" in
some of the example schemas for a model.
Best,
Erick
On Mon, Aug 21, 2017 at 3:52 AM, amukherjee10 <am...@sapient.com> wrote:
> I am passing a Solr query to fetch few results. Im trying to sort the data
> based on field of "string" type - documenttitle_s. Below is the full query
> that is getting passed:
> http://localhost:8000/solr/web/select?q=**&qt=/standard&qf=documenttitle_t+documentproductname_s+documenttypetext_s+mediacontent_t&start=0&fq=(_latestversion:true)&fq=(_template:f2909e5b58954a53affe8360b275a739)&facet.mincount=0&sort=documenttitle_s+desc&rows=50&facet=true&version=2.2
>
> The issue is that, though most of the data is getting sorted, few results
> are causing some anomaly. For example: text1 = onRisks - The variable
> affecting choices in the 21st century, text2 = onRisks - Econs, Humans and
> the Perception, text3 = Witch Redemption Authorization, text4 = Walk
> Infographic - Rising
> Ideally text3 should come on top when sorted in desc manner, but text1 is
> coming on top.
>
> Can anyone tell me what is going wrong here?
>
>
>
> --
> View this message in context: http://lucene.472066.n3.nabble.com/Solr-sort-incorrectly-tp4351419.html
> Sent from the Solr - User mailing list archive at Nabble.com.