Hi All, I want to group-by certain field and perform statistics per group on a certain field of my choice.
For example, if I have the next documents in my collection: <doc> <child-id> 12353 </child-id> <weight> 65 </weight> <gender> male </gender> </doc> <doc> <child-id> 12353 </child-id> <weight> 63 </weight> <gender> male </gender> </doc> <doc> <child-id> 12353 </child-id> <weight> 49 </weight> <gender> male </gender> </doc> now I want to group by gender, and let say for the sake of the example, that I want to average statistic on the weight. Is that possible? I would appreciate if anyone can also elaborate on performing such actions using SolrJ ... Thanks.
