#OData Extension for Data Aggregation Version 4.0 Committee Specification 02 is published

OASIS is pleased to announce the approval and publication of a new Committee Specification by the members of the OASIS Open Data Protocol (OData) TC:

OData Extension for Data Aggregation Version 4.0
Committee Specification 02
04 November 2015


This specification adds basic grouping and aggregation functionality (e.g. sum, min, and max) to the Open Data Protocol (OData) without changing any of the base principles of OData.

Description of the TC:

The OASIS OData TC works to simplify the querying and sharing of data across disparate applications and multiple stakeholders for re-use in the enterprise, Cloud, and mobile devices. A REST-based protocol, OData builds on HTTP, AtomPub, and JSON using URIs to address and access data feed resources. It enables information to be accessed from a variety of sources including (but not limited to) relational databases, file systems, content management systems, and traditional Web sites. OData provides a way to break down data silos and increase the shared value of data by creating an ecosystem in which data consumers can interoperate with data producers in a way that is far more powerful than currently possible, enabling more applications to make sense of a broader set of data. Every producer and consumer of data that participates in this ecosystem increases its overall value.

The prose specifications and related files are available here:

Editable source (Authoritative):



OData Aggregation ABNF Construction Rules Version 4.0:

OData Aggregation ABNF Test Cases:

OData Aggregation Vocabulary:

Distribution ZIP file

For your convenience, OASIS provides a complete package of the prose specification and related files in a ZIP distribution file. You can download the ZIP file here:


Members of the OASIS Open Data Protocol (OData) TC [1] approved this specification by Special Majority Vote. The specification had been released for public review as required by the TC Process [2]. The vote to approve as a Committee Specification passed [3], and the document is now available online in the OASIS Library as referenced above.

Our congratulations to the TC on achieving this milestone and our thanks to the reviewers who provided feedback on the specification drafts to help improve the quality of the work.

========== Additional references:

[1] OASIS Open Data Protocol (OData)

[2] Public reviews:
- 15-day public review, 28 August 2015: https://lists.oasis-open.org/archives/members/201508/msg00013.html
- Comment resolution log: http://docs.oasis-open.org/odata/odata-data-aggregation-ext/v4.0/csprd03...

[3] Approval ballot:

Associated TC: 
Open Data Protocol (OData)