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From Moenieb Davids <>
Subject RE: Joining Across Collections
Date Thu, 19 Jan 2017 11:09:19 GMT
Hi Guys

Just a quick question on search and join:

I have a few cores which is based on a mainframe extract, 1 core per extracted file which
resembles a "DB Table"
The cores are all somehow linked via 1 to many fields, with a structure similar to a normal

Is it possible to return the result from a query that joins lets say 3 cores in the following


Moenieb Davids

-----Original Message-----
From: Mikhail Khludnev [] 
Sent: 19 January 2017 10:00 AM
To: solr-user; nabil Kouici
Subject: Re: Joining Across Collections

It seems like it can be done by just negating join query or I'm missing something.

On Wed, Jan 18, 2017 at 11:32 AM, nabil Kouici <>

> Hi All,
> I'm using  join across collection feature to do an inner join between 
> 2 collections. It works fine.
> Is it possible to use this feature to compare between fields from 
> different collections. For exemple:
> Collection1 Field1Collection2 Field2
> search document from Collection1 where Field1 != Field2 In sql, this 
> will translated to:
> Select A.* From Collection1 A inner join Collection2 B on  
> A.Field1<>B.Field2
> Thank you.
> Regards,NKI.

Sincerely yours
Mikhail Khludnev

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