Implements group_by, projection and offset on datastore Query.#282

Merged

dhermes merged 2 commits intogoogleapis:masterfrom dhermes:implement-groupby-projection-offset

Oct 27, 2014

+183

Commits on Oct 27, 2014

Implements group_by, projection and offset on datastore Query.
dhermes
committed
Using native proto operations in Query to avoid data out-of-sync.
dhermes
committed