Join SPQuery in two list

Question

List 1 "Posts", fields
Title      body   #comments     modified
in this list #comments fields is look up from another list Comments:
List 2 "Comments", fields
title     body   comments      post tilte modified
in this list post "title" field is look up from list 1.
Now I have to form a join SPQuery to get a comments list modified field.
SPList listFaculty = web.Lists["Posts"];
            SPQuery query = new SPQuery();
            query.Query = "<where></where>";
            query.Joins = "<join Type='Left' ListAlias='Comments'>" + "<eq><fieldref Name='Title' RefType='ID' />" + "<fieldref List='Comments1' Name='ID'
/></eq></join>";
            query.ProjectedFields = "<field Name='Modified1' Type='Lookup' List='Comments1' ShowField='Modified'/>";
            query.ViewFields = "<fieldref Name='Modified1' />";
            SPListItemCollection lists = listFaculty.GetItems(query);
I'm getting error
Value does not fall within the range
What am I doing wrong?

Answer 1

Hello,
Can you do 2 things,
1), pay attention , CAML is case sensitive, you should change your tags  (Eq,Join,Field,FieldRef)
2) If you don't specify a query, just don't do it (remove the query.Query = "<where></where>"; line)
If it still doesn't work, take a look at this post, it could help you
http://blogs.msdn.com/b/kaevans/archive/2012/01/20/sharepoint-2010-caml-list-joins.aspx
Best regards, Christopher.
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