{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/55633324","id":55633324,"diff_hunk":"@@ -326,9 +326,9 @@ object ColumnPruning extends Rule[LogicalPlan] {\n     case p @ Project(_, a: Aggregate) if (a.outputSet -- p.references).nonEmpty =>\n       p.copy(\n         child = a.copy(aggregateExpressions = a.aggregateExpressions.filter(p.references.contains)))\n-    case p @ Project(_, w: Window) if (w.outputSet -- p.references).nonEmpty =>\n+    case p @ Project(_, w: Window)\n+        if (AttributeSet(w.windowExpressions.map(_.toAttribute)) -- p.references).nonEmpty =>","path":"sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala","position":6,"original_position":6,"commit_id":"f0fbe78f2449f23d818ad2119049080b21c9b1b6","original_commit_id":"f0fbe78f2449f23d818ad2119049080b21c9b1b6","user":{"login":"gatorsmile","id":11567269,"avatar_url":"https://avatars.githubusercontent.com/u/11567269?v=3","gravatar_id":"","url":"https://api.github.com/users/gatorsmile","html_url":"https://github.com/gatorsmile","followers_url":"https://api.github.com/users/gatorsmile/followers","following_url":"https://api.github.com/users/gatorsmile/following{/other_user}","gists_url":"https://api.github.com/users/gatorsmile/gists{/gist_id}","starred_url":"https://api.github.com/users/gatorsmile/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gatorsmile/subscriptions","organizations_url":"https://api.github.com/users/gatorsmile/orgs","repos_url":"https://api.github.com/users/gatorsmile/repos","events_url":"https://api.github.com/users/gatorsmile/events{/privacy}","received_events_url":"https://api.github.com/users/gatorsmile/received_events","type":"User","site_admin":false},"body":"Sure, will do. Thanks!","created_at":"2016-03-10T04:39:50Z","updated_at":"2016-03-10T04:39:50Z","html_url":"https://github.com/apache/spark/pull/11565#discussion_r55633324","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/11565","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/55633324"},"html":{"href":"https://github.com/apache/spark/pull/11565#discussion_r55633324"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/11565"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/11565","id":61992856,"html_url":"https://github.com/apache/spark/pull/11565","diff_url":"https://github.com/apache/spark/pull/11565.diff","patch_url":"https://github.com/apache/spark/pull/11565.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/11565","number":11565,"state":"open","locked":false,"title":"[SPARK-13732] [SQL] Remove projectList from Window","user":{"login":"gatorsmile","id":11567269,"avatar_url":"https://avatars.githubusercontent.com/u/11567269?v=3","gravatar_id":"","url":"https://api.github.com/users/gatorsmile","html_url":"https://github.com/gatorsmile","followers_url":"https://api.github.com/users/gatorsmile/followers","following_url":"https://api.github.com/users/gatorsmile/following{/other_user}","gists_url":"https://api.github.com/users/gatorsmile/gists{/gist_id}","starred_url":"https://api.github.com/users/gatorsmile/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gatorsmile/subscriptions","organizations_url":"https://api.github.com/users/gatorsmile/orgs","repos_url":"https://api.github.com/users/gatorsmile/repos","events_url":"https://api.github.com/users/gatorsmile/events{/privacy}","received_events_url":"https://api.github.com/users/gatorsmile/received_events","type":"User","site_admin":false},"body":"#### What changes were proposed in this pull request?\r\n\r\n`projectList` is useless. Its value is always the same as the child.output. Remove it from the class `Window`. Removal can simplify the codes in Analyzer and Optimizer. \r\n\r\nThis PR is based on the discussion started by @cloud-fan in a separate PR: \r\nhttps://github.com/apache/spark/pull/5604#discussion_r55140466\r\n\r\n@cloud-fan @yhuai \r\n\r\n#### How was this patch tested?\r\n\r\nExisting test cases cover it. 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