{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/59947393","id":59947393,"diff_hunk":"@@ -528,3 +530,20 @@ case class SetDatabaseCommand(databaseName: String) extends RunnableCommand {\n \n   override val output: Seq[Attribute] = Seq.empty\n }\n+\n+\n+/**\n+ * Returns the current database of metadataHive.\n+ */\n+@ExpressionDescription(\n+  usage = \"_FUNC_() - Returns the current database.\",\n+  extended = \"> SELECT _FUNC_()\")\n+private[sql] case class CurrentDatabase(ctx: SQLContext)","path":"sql/core/src/main/scala/org/apache/spark/sql/execution/command/commands.scala","position":29,"original_position":29,"commit_id":"63878296d295763b401acfb0f63534148a38632f","original_commit_id":"63878296d295763b401acfb0f63534148a38632f","user":{"login":"andrewor14","id":2133137,"avatar_url":"https://avatars.githubusercontent.com/u/2133137?v=3","gravatar_id":"","url":"https://api.github.com/users/andrewor14","html_url":"https://github.com/andrewor14","followers_url":"https://api.github.com/users/andrewor14/followers","following_url":"https://api.github.com/users/andrewor14/following{/other_user}","gists_url":"https://api.github.com/users/andrewor14/gists{/gist_id}","starred_url":"https://api.github.com/users/andrewor14/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/andrewor14/subscriptions","organizations_url":"https://api.github.com/users/andrewor14/orgs","repos_url":"https://api.github.com/users/andrewor14/repos","events_url":"https://api.github.com/users/andrewor14/events{/privacy}","received_events_url":"https://api.github.com/users/andrewor14/received_events","type":"User","site_admin":false},"body":"sure, but this is just moving code. We can clean that up later","created_at":"2016-04-15T22:01:19Z","updated_at":"2016-04-15T22:01:19Z","html_url":"https://github.com/apache/spark/pull/12424#discussion_r59947393","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/12424","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/59947393"},"html":{"href":"https://github.com/apache/spark/pull/12424#discussion_r59947393"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/12424"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/12424","id":66698843,"html_url":"https://github.com/apache/spark/pull/12424","diff_url":"https://github.com/apache/spark/pull/12424.diff","patch_url":"https://github.com/apache/spark/pull/12424.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/12424","number":12424,"state":"open","locked":false,"title":"[SPARK-14668] [SQL] Move CurrentDatabase to sql/core","user":{"login":"yhuai","id":2072857,"avatar_url":"https://avatars.githubusercontent.com/u/2072857?v=3","gravatar_id":"","url":"https://api.github.com/users/yhuai","html_url":"https://github.com/yhuai","followers_url":"https://api.github.com/users/yhuai/followers","following_url":"https://api.github.com/users/yhuai/following{/other_user}","gists_url":"https://api.github.com/users/yhuai/gists{/gist_id}","starred_url":"https://api.github.com/users/yhuai/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/yhuai/subscriptions","organizations_url":"https://api.github.com/users/yhuai/orgs","repos_url":"https://api.github.com/users/yhuai/repos","events_url":"https://api.github.com/users/yhuai/events{/privacy}","received_events_url":"https://api.github.com/users/yhuai/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\n\r\nThis PR moves `CurrentDatabase` from sql/hive package to sql/core. It also adds the function description, which looks like the following.\r\n\r\n```\r\nscala> sqlContext.sql(\"describe function extended current_database\").collect.foreach(println)\r\n[Function: current_database]\r\n[Class: org.apache.spark.sql.execution.command.CurrentDatabase]\r\n[Usage: current_database() - Returns the current database.]\r\n[Extended Usage:\r\n> SELECT current_database()]\r\n```\r\n\r\n## How was this patch tested?\r\nExisting tests\r\n","created_at":"2016-04-15T20:18:28Z","updated_at":"2016-04-15T22:01:19Z","closed_at":null,"merged_at":null,"merge_commit_sha":"202e3a48dcab82139af5080d51012a042a3b6e06","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/12424/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/12424/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/12424/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/63878296d295763b401acfb0f63534148a38632f","head":{"label":"yhuai:SPARK-14668","ref":"SPARK-14668","sha":"63878296d295763b401acfb0f63534148a38632f","user":{"login":"yhuai","id":2072857,"avatar_url":"https://avatars.githubusercontent.com/u/2072857?v=3","gravatar_id":"","url":"https://api.github.com/users/yhuai","html_url":"https://github.com/yhuai","followers_url":"https://api.github.com/users/yhuai/followers","following_url":"https://api.github.com/users/yhuai/following{/other_user}","gists_url":"https://api.github.com/users/yhuai/gists{/gist_id}","starred_url":"https://api.github.com/users/yhuai/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/yhuai/subscriptions","organizations_url":"https://api.github.com/users/yhuai/orgs","repos_url":"https://api.github.com/users/yhuai/repos","events_url":"https://api.github.com/users/yhuai/events{/privacy}","received_events_url":"https://api.github.com/users/yhuai/received_events","type":"User","site_admin":false},"repo":{"id":17964653,"name":"spark","full_name":"yhuai/spark","owner":{"login":"yhuai","id":2072857,"avatar_url":"https://avatars.githubusercontent.com/u/2072857?v=3","gravatar_id":"","url":"https://api.github.com/users/yhuai","html_url":"https://github.com/yhuai","followers_url":"https://api.github.com/users/yhuai/followers","following_url":"https://api.github.com/users/yhuai/following{/other_user}","gists_url":"https://api.github.com/users/yhuai/gists{/gist_id}","starred_url":"https://api.github.com/users/yhuai/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/yhuai/subscriptions","organizations_url":"https://api.github.com/users/yhuai/orgs","repos_url":"https://api.github.com/users/yhuai/repos","events_url":"https://api.github.com/users/yhuai/events{/privacy}","received_events_url":"https://api.github.com/users/yhuai/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/yhuai/spark","description":"Mirror 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