Thank you very much for your reply. I tried using script fields, like this: 

  "query":{
         "match_all": {}
         }, 
         "script_fields":{
                "test1":{
                           "script": "_source.title.length()"}
                           }
        }

 but what I get back from ES are only counts for the top 10 docs. How can I 
get values like max length, min length and average length for my title 
field? Thank you!

On Saturday, April 12, 2014 2:50:04 PM UTC+2, vineeth mohan wrote:
>
> Hello Cristina , 
>
> This is not possible using stat facet. It expect the field to be a number 
> and it calculates max/min etc based on its different values.
>
> A way to do this would be to add a new field while indexing which would be 
> the length of the title.
> Then performing stats over it might work.
>
> There might be other solutions based on scripting , but i need to explore 
> ...
>
> Thanks
>            Vineeth
>
>
> On Sat, Apr 12, 2014 at 3:25 PM, Cristina Garbacea 
> <[email protected]<javascript:>
> > wrote:
>
>> I would like to retrieve statistical data about a string field like the 
>> min, max and average length (by counting the number of characters inside 
>> the string). I am using CURL to do this and I have what I have tried so far 
>>
>>    "query":{
>>          "match_all": {}
>>     }, 
>>    "facets":{
>>          "stats":{
>>                "statistical":{
>>                      "field":"title"}
>>                      }
>>                 }
>>
>> returns me exception because the facet expects a number field. How can I 
>> achieve my goal? Thanks!
>>
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