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Subject: [OASIS Issue Tracker] Issue Comment Edited: (ODATA-165) Support Cross-joins


    [ http://tools.oasis-open.org/issues/browse/ODATA-165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=33746#action_33746 ] 

Stefan Drees edited comment on ODATA-165 at 6/17/13 4:41 AM:
-------------------------------------------------------------

Reference to meeting #41 minute link fragment documenting the approval of application has been added.


      was (Author: sdrees):
    TODO Reference to meeting #41 minute link fragment will follow when it is available.
  
> Support Cross-joins
> -------------------
>
>                 Key: ODATA-165
>                 URL: http://tools.oasis-open.org/issues/browse/ODATA-165
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: New Feature
>          Components: OData ABNF Construction Rules, OData URL Conventions 
>    Affects Versions: V4.0_WD01
>         Environment: [Applied]
>            Reporter: Michael Pizzo
>            Assignee: Ralf Handl
>             Fix For: V4.0_CSD02
>
>
> We often have requests to support queries that span entitysets. Where navigation properties exist between the entitysets these provide a natural and convenient mechanism for building queries that span entitysets. However, where navigation properties are not present a way is needed to build such cross-entity spanning queries.
> In the context of looking at aggregation we came up with a solution for doing this by considering the entitycontainer as the cross-product of the contained entitysets. You could then $expand the entitysets you wanted to join, and add a filter to specify the equivalent of the join condition. This seemed generally useful beyond just the scope of aggregation.

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