{"action":"opened","issue":{"url":"https://api.github.com/repos/kakao/s2graph/issues/155","labels_url":"https://api.github.com/repos/kakao/s2graph/issues/155/labels{/name}","comments_url":"https://api.github.com/repos/kakao/s2graph/issues/155/comments","events_url":"https://api.github.com/repos/kakao/s2graph/issues/155/events","html_url":"https://github.com/kakao/s2graph/issues/155","id":114192875,"number":155,"title":"provide groupBy operation by edge property","user":{"login":"hsleep","id":1726920,"avatar_url":"https://avatars.githubusercontent.com/u/1726920?v=3","gravatar_id":"","url":"https://api.github.com/users/hsleep","html_url":"https://github.com/hsleep","followers_url":"https://api.github.com/users/hsleep/followers","following_url":"https://api.github.com/users/hsleep/following{/other_user}","gists_url":"https://api.github.com/users/hsleep/gists{/gist_id}","starred_url":"https://api.github.com/users/hsleep/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hsleep/subscriptions","organizations_url":"https://api.github.com/users/hsleep/orgs","repos_url":"https://api.github.com/users/hsleep/repos","events_url":"https://api.github.com/users/hsleep/events{/privacy}","received_events_url":"https://api.github.com/users/hsleep/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-10-30T03:32:55Z","updated_at":"2015-10-30T03:32:55Z","closed_at":null,"body":"The groupBy parameter in the query level option is useful to aggregate result by field.\r\n[Query Level Options | S2Graph Book](https://steamshon.gitbooks.io/s2graph-book/content/query_level_options.html)\r\n\r\nBut, this parameter is not operate on edge properties.\r\nNeed a patch to resolve it."}}