{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/30321573","id":30321573,"diff_hunk":"@@ -198,10 +198,12 @@ class Analyzer(\n \n       g.bitmasks.foreach { bitmask =>\n         // get the non selected grouping attributes according to the bit mask\n-        val nonSelectedGroupExprSet = buildNonSelectExprSet(bitmask, g.groupByExprs)\n+        val nonSelectedGroupExprs = buildNonSelectExprs(bitmask, g.groupByExprs)\n \n         val substitution = (g.child.output :+ g.gid).map(expr => expr transformDown {\n-          case x: Expression if nonSelectedGroupExprSet.contains(x) =>\n+          case x: Expression\n+            if nonSelectedGroupExprs.find(\n+                 ExpressionEquality(_) == ExpressionEquality(x)).isDefined =>","path":"sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala","position":34,"original_position":34,"commit_id":"5c2162ebc342dcbfd5db69331a50bf580383e0ad","original_commit_id":"5c2162ebc342dcbfd5db69331a50bf580383e0ad","user":{"login":"cloud-fan","id":3182036,"avatar_url":"https://avatars.githubusercontent.com/u/3182036?v=3","gravatar_id":"","url":"https://api.github.com/users/cloud-fan","html_url":"https://github.com/cloud-fan","followers_url":"https://api.github.com/users/cloud-fan/followers","following_url":"https://api.github.com/users/cloud-fan/following{/other_user}","gists_url":"https://api.github.com/users/cloud-fan/gists{/gist_id}","starred_url":"https://api.github.com/users/cloud-fan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cloud-fan/subscriptions","organizations_url":"https://api.github.com/users/cloud-fan/orgs","repos_url":"https://api.github.com/users/cloud-fan/repos","events_url":"https://api.github.com/users/cloud-fan/events{/privacy}","received_events_url":"https://api.github.com/users/cloud-fan/received_events","type":"User","site_admin":false},"body":"How about we add `semanticEquals` method to `Expression` and implement it with `equals` as default? Then we can override `semanticEquals` for `AttributeReference` and just write `_.semanticEquals(x)` here.","created_at":"2015-05-14T13:49:47Z","updated_at":"2015-05-14T13:49:47Z","html_url":"https://github.com/apache/spark/pull/6110#discussion_r30321573","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/6110","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/30321573"},"html":{"href":"https://github.com/apache/spark/pull/6110#discussion_r30321573"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/6110"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/6110","id":35296112,"html_url":"https://github.com/apache/spark/pull/6110","diff_url":"https://github.com/apache/spark/pull/6110.diff","patch_url":"https://github.com/apache/spark/pull/6110.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/6110","number":6110,"state":"open","locked":false,"title":"[SPARK-7269] [SQL] Incorrect analysis for aggregation (new implementation)","user":{"login":"chenghao-intel","id":2367031,"avatar_url":"https://avatars.githubusercontent.com/u/2367031?v=3","gravatar_id":"","url":"https://api.github.com/users/chenghao-intel","html_url":"https://github.com/chenghao-intel","followers_url":"https://api.github.com/users/chenghao-intel/followers","following_url":"https://api.github.com/users/chenghao-intel/following{/other_user}","gists_url":"https://api.github.com/users/chenghao-intel/gists{/gist_id}","starred_url":"https://api.github.com/users/chenghao-intel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/chenghao-intel/subscriptions","organizations_url":"https://api.github.com/users/chenghao-intel/orgs","repos_url":"https://api.github.com/users/chenghao-intel/repos","events_url":"https://api.github.com/users/chenghao-intel/events{/privacy}","received_events_url":"https://api.github.com/users/chenghao-intel/received_events","type":"User","site_admin":false},"body":"This is another implementation other than #5798  ","created_at":"2015-05-13T05:48:46Z","updated_at":"2015-05-14T13:49:47Z","closed_at":null,"merged_at":null,"merge_commit_sha":"0fa1a9f49e3d4a0242604a46e23628130957d255","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/6110/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/6110/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/6110/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/5c2162ebc342dcbfd5db69331a50bf580383e0ad","head":{"label":"chenghao-intel:analysis2","ref":"analysis2","sha":"5c2162ebc342dcbfd5db69331a50bf580383e0ad","user":{"login":"chenghao-intel","id":2367031,"avatar_url":"https://avatars.githubusercontent.com/u/2367031?v=3","gravatar_id":"","url":"https://api.github.com/users/chenghao-intel","html_url":"https://github.com/chenghao-intel","followers_url":"https://api.github.com/users/chenghao-intel/followers","following_url":"https://api.github.com/users/chenghao-intel/following{/other_user}","gists_url":"https://api.github.com/users/chenghao-intel/gists{/gist_id}","starred_url":"https://api.github.com/users/chenghao-intel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/chenghao-intel/subscriptions","organizations_url":"https://api.github.com/users/chenghao-intel/orgs","repos_url":"https://api.github.com/users/chenghao-intel/repos","events_url":"https://api.github.com/users/chenghao-intel/events{/privacy}","received_events_url":"https://api.github.com/users/chenghao-intel/received_events","type":"User","site_admin":false},"repo":{"id":18098468,"name":"spark","full_name":"chenghao-intel/spark","owner":{"login":"chenghao-intel","id":2367031,"avatar_url":"https://avatars.githubusercontent.com/u/2367031?v=3","gravatar_id":"","url":"https://api.github.com/users/chenghao-intel","html_url":"https://github.com/chenghao-intel","followers_url":"https://api.github.com/users/chenghao-intel/followers","following_url":"https://api.github.com/users/chenghao-intel/following{/other_user}","gists_url":"https://api.github.com/users/chenghao-intel/gists{/gist_id}","starred_url":"https://api.github.com/users/chenghao-intel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/chenghao-intel/subscriptions","organizations_url":"https://api.github.com/users/chenghao-intel/orgs","repos_url":"https://api.github.com/users/chenghao-intel/repos","events_url":"https://api.github.com/users/chenghao-intel/events{/privacy}","received_events_url":"https://api.github.com/users/chenghao-intel/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/chenghao-intel/spark","description":"Mirror 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