{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/59621980","id":59621980,"diff_hunk":"@@ -0,0 +1,66 @@\n+/*\n+ * Licensed to the Apache Software Foundation (ASF) under one or more\n+ * contributor license agreements.  See the NOTICE file distributed with\n+ * this work for additional information regarding copyright ownership.\n+ * The ASF licenses this file to You under the Apache License, Version 2.0\n+ * (the \"License\"); you may not use this file except in compliance with\n+ * the License.  You may obtain a copy of the License at\n+ *\n+ *    http://www.apache.org/licenses/LICENSE-2.0\n+ *\n+ * Unless required by applicable law or agreed to in writing, software\n+ * distributed under the License is distributed on an \"AS IS\" BASIS,\n+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n+ * See the License for the specific language governing permissions and\n+ * limitations under the License.\n+ */\n+\n+package org.apache.spark.sql.execution.command\n+\n+import org.apache.spark.sql.{AnalysisException, Row, SQLContext}\n+import org.apache.spark.sql.catalyst.TableIdentifier\n+import org.apache.spark.sql.catalyst.catalog.CatalogTable\n+\n+/**\n+ * A command to create a table with the same definition of the given existing table.\n+ *\n+ * The syntax of using this command in SQL is:\n+ * {{{\n+ *   CREATE TABLE [IF NOT EXISTS] [db_name.]table_name\n+ *   LIKE [other_db_name.]existing_table_name\n+ * }}}\n+ */\n+case class CreateTableLike(\n+    table: CatalogTable,\n+    ifNotExists: Boolean,\n+    sourceTable: TableIdentifier) extends RunnableCommand {\n+\n+  override def run(sqlContext: SQLContext): Seq[Row] = {\n+    val catalog = sqlContext.sessionState.catalog\n+    if (!catalog.tableExists(sourceTable)) {\n+      throw new AnalysisException(\n+        s\"Cannot create table like on not existing table ${sourceTable.identifier}.\")\n+    }\n+    if (catalog.isTemporaryTable(sourceTable)) {\n+      throw new AnalysisException(\n+        s\"Cannot create table like on a temporary table ${sourceTable.identifier}.\")\n+    }\n+\n+    val sourceTableMetadata = catalog.getTableMetadata(sourceTable)\n+    val tableToCreate = CatalogTable(","path":"sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala","position":50,"original_position":50,"commit_id":"a23559d0df74df30f08615489dbaa67aaa87e097","original_commit_id":"a23559d0df74df30f08615489dbaa67aaa87e097","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":"actually, we only want to change the identifier right? and maybe the create time and last access time. The rest should be exactly the same.","created_at":"2016-04-13T20:44:29Z","updated_at":"2016-04-13T20:44:29Z","html_url":"https://github.com/apache/spark/pull/12362#discussion_r59621980","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/12362","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/59621980"},"html":{"href":"https://github.com/apache/spark/pull/12362#discussion_r59621980"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/12362"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/12362","id":66342271,"html_url":"https://github.com/apache/spark/pull/12362","diff_url":"https://github.com/apache/spark/pull/12362.diff","patch_url":"https://github.com/apache/spark/pull/12362.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/12362","number":12362,"state":"open","locked":false,"title":"[SPARK-14592][SQL] Native support for CREATE TABLE LIKE DDL command","user":{"login":"viirya","id":68855,"avatar_url":"https://avatars.githubusercontent.com/u/68855?v=3","gravatar_id":"","url":"https://api.github.com/users/viirya","html_url":"https://github.com/viirya","followers_url":"https://api.github.com/users/viirya/followers","following_url":"https://api.github.com/users/viirya/following{/other_user}","gists_url":"https://api.github.com/users/viirya/gists{/gist_id}","starred_url":"https://api.github.com/users/viirya/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viirya/subscriptions","organizations_url":"https://api.github.com/users/viirya/orgs","repos_url":"https://api.github.com/users/viirya/repos","events_url":"https://api.github.com/users/viirya/events{/privacy}","received_events_url":"https://api.github.com/users/viirya/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\nJIRA: https://issues.apache.org/jira/browse/SPARK-14592\r\n\r\nThis patch adds native support for DDL command `CREATE TABLE LIKE`.\r\n\r\nThe SQL syntax is like:\r\n    \r\n    CREATE TABLE table_name LIKE existing_table\r\n    CREATE TABLE IF NOT EXISTS table_name LIKE existing_table\r\n\r\n## How was this patch tested?\r\n`HiveDDLCommandSuite`.\r\n","created_at":"2016-04-13T15:33:22Z","updated_at":"2016-04-13T20:44:29Z","closed_at":null,"merged_at":null,"merge_commit_sha":"b0801d76b5822d1cf09b7c2c40fa649e5189fc9a","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/12362/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/12362/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/12362/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/a23559d0df74df30f08615489dbaa67aaa87e097","head":{"label":"viirya:create-table-like","ref":"create-table-like","sha":"a23559d0df74df30f08615489dbaa67aaa87e097","user":{"login":"viirya","id":68855,"avatar_url":"https://avatars.githubusercontent.com/u/68855?v=3","gravatar_id":"","url":"https://api.github.com/users/viirya","html_url":"https://github.com/viirya","followers_url":"https://api.github.com/users/viirya/followers","following_url":"https://api.github.com/users/viirya/following{/other_user}","gists_url":"https://api.github.com/users/viirya/gists{/gist_id}","starred_url":"https://api.github.com/users/viirya/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viirya/subscriptions","organizations_url":"https://api.github.com/users/viirya/orgs","repos_url":"https://api.github.com/users/viirya/repos","events_url":"https://api.github.com/users/viirya/events{/privacy}","received_events_url":"https://api.github.com/users/viirya/received_events","type":"User","site_admin":false},"repo":{"id":21467907,"name":"spark-1","full_name":"viirya/spark-1","owner":{"login":"viirya","id":68855,"avatar_url":"https://avatars.githubusercontent.com/u/68855?v=3","gravatar_id":"","url":"https://api.github.com/users/viirya","html_url":"https://github.com/viirya","followers_url":"https://api.github.com/users/viirya/followers","following_url":"https://api.github.com/users/viirya/following{/other_user}","gists_url":"https://api.github.com/users/viirya/gists{/gist_id}","starred_url":"https://api.github.com/users/viirya/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viirya/subscriptions","organizations_url":"https://api.github.com/users/viirya/orgs","repos_url":"https://api.github.com/users/viirya/repos","events_url":"https://api.github.com/users/viirya/events{/privacy}","received_events_url":"https://api.github.com/users/viirya/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/viirya/spark-1","description":"Mirror 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