{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/60409868","id":60409868,"diff_hunk":"@@ -958,6 +958,26 @@ object PushDownPredicate extends Rule[LogicalPlan] with PredicateHelper {\n \n       project.copy(child = Filter(replaceAlias(condition, aliasMap), grandChild))\n \n+    // Push [[Filter]] operators through [[Window]] operators. Parts of the predicate that can be\n+    // pushed beneath must satisfy three conditions:\n+    // 1. involving one and only one column that is part of window partitioning key.","path":"sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala","position":6,"original_position":6,"commit_id":"436359fbd25854266215916a01e850980c953743","original_commit_id":"436359fbd25854266215916a01e850980c953743","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":"For example, we are unable to push the predicate `(key + value) > '2'` in the following query. Predicate push down will change the value of `sum(key)`\r\n\r\n```SQL\r\nselect * from (SELECT key, value, sum(key) over(partition by key, value) as c1 from src)r1 where (key + value) > '2';\r\n```","created_at":"2016-04-20T13:48:59Z","updated_at":"2016-04-20T13:48:59Z","html_url":"https://github.com/apache/spark/pull/11635#discussion_r60409868","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/11635","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/60409868"},"html":{"href":"https://github.com/apache/spark/pull/11635#discussion_r60409868"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/11635"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/11635","id":62436583,"html_url":"https://github.com/apache/spark/pull/11635","diff_url":"https://github.com/apache/spark/pull/11635.diff","patch_url":"https://github.com/apache/spark/pull/11635.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/11635","number":11635,"state":"open","locked":false,"title":"[SPARK-13739] [SQL] Push Predicate Through 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\nFor performance, predicates can be pushed through Window if and only if the following conditions are satisfied:\r\n\r\n- Predicate involves one and only one column that is part of window partitioning key\r\n- Window partitioning key is just a sequence of attributeReferences. (i.e., none of them is an expression)\r\n- Predicate must be deterministic\r\n\r\n#### How was this patch tested?\r\n\r\nTODO: \r\n- [X]  DSL needs to be modified for window\r\n- [X] more tests will be added.","created_at":"2016-03-10T18:48:19Z","updated_at":"2016-04-20T13:49:00Z","closed_at":null,"merged_at":null,"merge_commit_sha":"d97cd26f6a1310f6cb2f9f601c5198bd9830a8ca","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/11635/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/11635/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/11635/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/436359fbd25854266215916a01e850980c953743","head":{"label":"gatorsmile:pushPredicateThroughWindow","ref":"pushPredicateThroughWindow","sha":"436359fbd25854266215916a01e850980c953743","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},"repo":{"id":44710950,"name":"spark","full_name":"gatorsmile/spark","owner":{"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},"private":false,"html_url":"https://github.com/gatorsmile/spark","description":"Mirror 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