StackOverflow2013

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2012-01-23T18:54:09.807
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2012-01-23T18:54:09.807
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I guess you are looking for Alphabetic Range Bucketing. There is no feature in Solr that provides this feature out of the box. But you can use creative hack with additional step of text analysis. This following may help in your case, Create Field Type: letterRangeFieldType <pre class="lang-xml prettyprint-override"><code><fieldType name="letterRangeFieldType" class="solr.TextField"> <analyzer type="index"> <tokenizer class="solr.PatternTokenizerFactory" pattern="^([a-zA-Z]).*" group="1" /> <filter class="solr.SynonymFilterFactory" synonyms="letterRanges.txt" ignoreCase="true" expand="false"/> </analyzer> <analyzer type="query"> <tokenizer class="solr.KeywordTokenizerFactory"/> </analyzer> </fieldType> </code></pre> Create Field with that field type: <pre class="lang-xml prettyprint-override"><code><field name="firstNameFacetLetter" type="letterRangeFieldType" stored="false" /> </code></pre> Create copy field that copies the first names into the new field that will bucketise: <pre class="lang-xml prettyprint-override"><code><copyField source="firstName" dest="firstNameFacetLetter" /> </code></pre> To sum it up, while indexing the PatternTokenizerFactory takes first character from first name and maps it to the range base on the range of synonyms defined in <code>synonyms="letterRanges.txt"</code>. For example first name with <code>Foo</code> will map to <code>D - F</code>. Finally, you can run facet on the new field with sort by <code>lex</code> order. You will get results like so, <pre class="lang-xml prettyprint-override"><code><lst name="firstNameFacetLetter"> <int name="A-C">99</int> <int name="D-F">76</int> <int name="G-I">52</int> ... </code></pre> You need to customize to fit your ranges & requirements, but this may help you.
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1. POSolr : Query by range of name
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1. USmailboat
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1. COThank you for your answer but I think I was not clear with the problem if have. I have a lot of user beginning with A. I want to split the result in fact. I just need to make a search of lastname beginning with A and then I would like to retrieve the first result, the Xth result, the Xth+1 result, the 2xXth result and so on... So I can get range like I describe in my question.
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Querying!

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.