Hi Bruno, Did you consider using a range facet with gap being 1 year? If that works for you, you can avoid reindexing altogether.
https://solr.apache.org/guide/8_1/json-facet-api.html Try specifying gap as "1YEARS" or "+1YEARS" (I forgot if plus sign was required or not) Sincerely Ufuk Yilmaz — > On Jul 1, 2024, at 17:51, Bruno Mannina <bmann...@matheo-software.com> wrote: > > Hi Solr Team, > > > > Is it possible to create a copy field where the source is a date-time field > to extract only the year ? > > > > I have 2024-07-01T253:59:59Z for the date field and store/index a copy field > with only 2024. > > > > The goal is to have faceting only on Year information. > > > > Note: I haven't the possibility to re-create my source files to index due to > the huge volume (more than 15To of data). > > Note2: my index is not yet build. > > > > Cordialement, Best Regards > > Bruno Mannina > > <http://www.matheo-software.com/> www.matheo-software.com > > <http://www.patent-pulse.com/> www.patent-pulse.com > > Mob. +33 0 634 421 817 > > > > > > -- > Cet e-mail a été vérifié par le logiciel antivirus d'Avast. > www.avast.com
