Make each document have a composite unique key: user-1, user-2, review-1,... 
Etc. 

Easier said than done if you're just posting the CSV directly to Solr but an 
update script could help. 

Or perhaps use the UUID auto id feature. 

  Erik

> On Nov 17, 2015, at 08:14, Mugeesh Husain <muge...@gmail.com> wrote:
> 
> Hi!
> 
> I have a 3 csv table,
> 1.)retuarant 
> 2.)User
> 3.)Review
> 
> every csv have a unique key, then how i can configure multiple unique key in
> solr
> 
> 
> 
> --
> View this message in context: 
> http://lucene.472066.n3.nabble.com/Multiple-unique-key-in-Schema-tp4240550.html
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