The ability of join operation supported as what
http://wiki.apache.org/solr/Join says is so limited.
I'm thinking how to support standard join operation in Solr/Lucene because not
all can be de-normalized efficiently.
Take 2 schemas below as an example:
(1) Student
sid
name
cid // class id
(2) class
cid
name
major
In SQL, it will be easy to get all students' name and its class name where
student's name start with 'p' and class's major is "CS".
Select s.name, c.name from student s, class c where s.name like 'p%'
and c.major = "CS".
How Solr/Lucene support the above query? It seems they do not.
Thanks,
________________________________
Robert Yu
Application Service - Backend
Morningstar Shenzhen Ltd.
Morningstar. Illuminating investing worldwide.
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