[ckan-dev] wild card search works not as expected

Tue Jul 1 10:21:40 UTC 2014

'*' stands for multiple (zero or more) sequential characters , but '?' 
just for one single character, see e.g.
http://docs.lucidworks.com/display/solr/The+Standard+Query+Parser

Actually 'europ*' seems to work reasonable (returns 626 datasets)

Heinrich

Am 01/07/2014 12:08, schrieb Nigel Babu:
> I'm not the solr expert, but isn't * the wildcard character and not ?
>
> Nigel Babu
> Developer, Open Knowledge
>
>
> On 1 July 2014 15:22, Heinrich Widmann <widmann at dkrz.de 
> <mailto:widmann at dkrz.de>> wrote:
>
>     Thanks for the answer, Nigel.
>     But I still don't understand the response from CKAN search.
>     To be shure, I submit as well corresponding SOLR requests, and get
>     the same curious results :
>
>     title:europe in the CKAN UI search field or
>     http://b2find.eudat.eu:8983/solr/select/?wt=json&indent=on&q=title:europe&wt=json&fl=id,name
>     finds 126 datasets
>
>     while
>     title:europ? in the CKAN UI search field or
>     http://b2find.eudat.eu:8983/solr/select/?wt=json&indent=on&q=title:europ?&wt=json&fl=id,name
>     finds 31 datasets
>     (e.g. title="europe" and ="europe central" are NOT found here !?)
>
>     Maybe I misunderstand SOLR search with wildcards completely, but I
>     would expect more (or at least equal) number of
>     returned records for 'europ?' than for 'europe'.
>
>     Thanks
>     Heinrich
>
>
>     Am 01/07/2014 03:10, schrieb Nigel Babu:
>>     Glad you got it working. Just adding a note for future: It
>>     follows Solr guidelines, I believe.
>>
>>     Nigel Babu
>>     Developer, Open Knowledge
>>
>>
>>     On 30 June 2014 18:43, Heinrich Widmann <widmann at dkrz.de
>>     <mailto:widmann at dkrz.de>> wrote:
>>
>>         Upps, a typo occured :-( ... :
>>         Am 30/06/2014 15:04, schrieb Heinrich Widmann:
>>
>>             Hi,
>>             the field search in the CKAN2.2 GUI works not as expected
>>             in our portal b2find.eudat.eu <http://b2find.eudat.eu> :
>>
>>             title:europe returns 116 datasets,
>>             but
>>             title:europ? finds only
>>
>>         27 records !!!
>>         sorry,
>>         Heiner
>>
>>
>>             116 records,
>>             e.g. NOT the datasets 'europe' and 'europe central' ...
>>
>>             Could somebody explain this behaviour ?
>>
>>             By the way : is there a 'official' 'search help' for the
>>             CKAN GUI rsp. API ?
>>             Should be the same as for SOLR search, or ?
>>
>>             Thanks,
>>             Heiner
>>
>>
>>         -- 
>>         -----------------------------\\---------------------------------------
>>         Heinrich Widmann              \\ Deutsches Klimarechenzentrum
>>         GmbH
>>         Phone: +49 40 460094 282       \\ Abteilung Datenmanagement
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>>         Email: widmann at dkrz.de <mailto:widmann at dkrz.de>       \\  
>>         D-20146 Hamburg
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>     -- 
>     -----------------------------\\---------------------------------------
>     Heinrich Widmann              \\ Deutsches Klimarechenzentrum GmbH
>     Phone: +49 40 460094 282       \\   Abteilung Datenmanagement
>     FAX:   +49 40 460094 270        \\    Bundesstr. 45a
>     Email:widmann at dkrz.de  <mailto:widmann at dkrz.de>            \\   D-20146 Hamburg
>     http://www.dkrz.de                 \\  Germany
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-- 
-----------------------------\\---------------------------------------
Heinrich Widmann              \\ Deutsches Klimarechenzentrum GmbH
Phone: +49 40 460094 282       \\   Abteilung Datenmanagement
FAX:   +49 40 460094 270        \\    Bundesstr. 45a
Email: widmann at dkrz.de           \\   D-20146 Hamburg
http://www.dkrz.de                \\  Germany
-----------------------------------\\---------------------------------

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