I am pleased and excited to announce that the OASIS OData Technical Committee has produced a Committee Draft for a set of extensions to OData for Data Aggregation.
This extension adds basic grouping and aggregation functionality (e.g. sum, min, and max) to OData without changing any of the base principles.
There has been a great deal of interest expressed in this functionality in the past, so I am hopeful that we'll have a lot of good discussion and feedback provided to the TC through the OASIS Mailing List as described in the announcement of the public review.
Looking forward to your feedback!