{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/114366327","pull_request_review_id":35826181,"id":114366327,"diff_hunk":"@@ -132,17 +132,24 @@ createMethods()\n \n #' alias\n #'\n-#' Set a new name for a column\n+#' Set a new name for an object. Equivalent to SQL \"AS\" keyword.","path":"R/pkg/R/column.R","position":5,"original_position":5,"commit_id":"d892f3068ee882436eb1be61402126bbd8dc6524","original_commit_id":"d892f3068ee882436eb1be61402126bbd8dc6524","user":{"login":"felixcheung","id":8969467,"avatar_url":"https://avatars0.githubusercontent.com/u/8969467?v=3","gravatar_id":"","url":"https://api.github.com/users/felixcheung","html_url":"https://github.com/felixcheung","followers_url":"https://api.github.com/users/felixcheung/followers","following_url":"https://api.github.com/users/felixcheung/following{/other_user}","gists_url":"https://api.github.com/users/felixcheung/gists{/gist_id}","starred_url":"https://api.github.com/users/felixcheung/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/felixcheung/subscriptions","organizations_url":"https://api.github.com/users/felixcheung/orgs","repos_url":"https://api.github.com/users/felixcheung/repos","events_url":"https://api.github.com/users/felixcheung/events{/privacy}","received_events_url":"https://api.github.com/users/felixcheung/received_events","type":"User","site_admin":false},"body":"right, this is Scala doc for Column.alias `Gives the column an alias` (which is not very concise)\r\nDataset.alias `Returns a new Dataset with an alias set.`\r\n\r\nI think we need to say `Set a new name to return as a new object` or similar. Actually I think we should say \"Column or SparkDataFrame\" in place of \"object\" - what do you think?\r\n\r\nI think the `SQL \"AS\"` part but perhaps it will be more clear if lead with \"for Column, ...\"?\r\n","created_at":"2017-05-02T16:45:33Z","updated_at":"2017-05-02T16:45:35Z","html_url":"https://github.com/apache/spark/pull/17825#discussion_r114366327","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/17825","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/114366327"},"html":{"href":"https://github.com/apache/spark/pull/17825#discussion_r114366327"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/17825"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/17825","id":118456700,"html_url":"https://github.com/apache/spark/pull/17825","diff_url":"https://github.com/apache/spark/pull/17825.diff","patch_url":"https://github.com/apache/spark/pull/17825.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/17825","number":17825,"state":"open","locked":false,"title":"[SPARK-20550][SPARKR] R wrapper for Dataset.alias","user":{"login":"zero323","id":1554276,"avatar_url":"https://avatars0.githubusercontent.com/u/1554276?v=3","gravatar_id":"","url":"https://api.github.com/users/zero323","html_url":"https://github.com/zero323","followers_url":"https://api.github.com/users/zero323/followers","following_url":"https://api.github.com/users/zero323/following{/other_user}","gists_url":"https://api.github.com/users/zero323/gists{/gist_id}","starred_url":"https://api.github.com/users/zero323/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zero323/subscriptions","organizations_url":"https://api.github.com/users/zero323/orgs","repos_url":"https://api.github.com/users/zero323/repos","events_url":"https://api.github.com/users/zero323/events{/privacy}","received_events_url":"https://api.github.com/users/zero323/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\n\r\n- Add SparkR wrapper for `Dataset.alias`.\r\n- Adjust roxygen annotations for `functions.alias` (including example usage).\r\n\r\n## How was this patch tested?\r\n\r\nUnit tests, `check_cran.sh`.\r\n","created_at":"2017-05-01T22:54:57Z","updated_at":"2017-05-02T16:45:35Z","closed_at":null,"merged_at":null,"merge_commit_sha":"9e19fb0e5f258f7394e4ef2c05c19df1a2392dd3","assignee":null,"assignees":[],"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/17825/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/17825/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/17825/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/d892f3068ee882436eb1be61402126bbd8dc6524","head":{"label":"zero323:SPARK-20550","ref":"SPARK-20550","sha":"d892f3068ee882436eb1be61402126bbd8dc6524","user":{"login":"zero323","id":1554276,"avatar_url":"https://avatars0.githubusercontent.com/u/1554276?v=3","gravatar_id":"","url":"https://api.github.com/users/zero323","html_url":"https://github.com/zero323","followers_url":"https://api.github.com/users/zero323/followers","following_url":"https://api.github.com/users/zero323/following{/other_user}","gists_url":"https://api.github.com/users/zero323/gists{/gist_id}","starred_url":"https://api.github.com/users/zero323/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zero323/subscriptions","organizations_url":"https://api.github.com/users/zero323/orgs","repos_url":"https://api.github.com/users/zero323/repos","events_url":"https://api.github.com/users/zero323/events{/privacy}","received_events_url":"https://api.github.com/users/zero323/received_events","type":"User","site_admin":false},"repo":{"id":43824676,"name":"spark","full_name":"zero323/spark","owner":{"login":"zero323","id":1554276,"avatar_url":"https://avatars0.githubusercontent.com/u/1554276?v=3","gravatar_id":"","url":"https://api.github.com/users/zero323","html_url":"https://github.com/zero323","followers_url":"https://api.github.com/users/zero323/followers","following_url":"https://api.github.com/users/zero323/following{/other_user}","gists_url":"https://api.github.com/users/zero323/gists{/gist_id}","starred_url":"https://api.github.com/users/zero323/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zero323/subscriptions","organizations_url":"https://api.github.com/users/zero323/orgs","repos_url":"https://api.github.com/users/zero323/repos","events_url":"https://api.github.com/users/zero323/events{/privacy}","received_events_url":"https://api.github.com/users/zero323/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/zero323/spark","description":"Mirror 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