{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/33906339","id":33906339,"diff_hunk":"@@ -0,0 +1,45 @@\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.types\n+\n+import scala.math.Ordering\n+import scala.reflect.runtime.universe.typeTag\n+\n+import org.apache.spark.annotation.DeveloperApi\n+import org.apache.spark.sql.catalyst.ScalaReflectionLock\n+\n+@DeveloperApi\n+class DayTimeIntervalType private() extends AtomicType {","path":"sql/catalyst/src/main/scala/org/apache/spark/sql/types/DayTimeIntervalType.scala","position":27,"original_position":27,"commit_id":"1adbae155a7bc4f2bc6e5661c7a99dfe064683d5","original_commit_id":"1adbae155a7bc4f2bc6e5661c7a99dfe064683d5","user":{"login":"rxin","id":323388,"avatar_url":"https://avatars.githubusercontent.com/u/323388?v=3","gravatar_id":"","url":"https://api.github.com/users/rxin","html_url":"https://github.com/rxin","followers_url":"https://api.github.com/users/rxin/followers","following_url":"https://api.github.com/users/rxin/following{/other_user}","gists_url":"https://api.github.com/users/rxin/gists{/gist_id}","starred_url":"https://api.github.com/users/rxin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rxin/subscriptions","organizations_url":"https://api.github.com/users/rxin/orgs","repos_url":"https://api.github.com/users/rxin/repos","events_url":"https://api.github.com/users/rxin/events{/privacy}","received_events_url":"https://api.github.com/users/rxin/received_events","type":"User","site_admin":false},"body":"let's create an abstract data type for IntervalType.","created_at":"2015-07-06T05:07:54Z","updated_at":"2015-07-06T05:07:54Z","html_url":"https://github.com/apache/spark/pull/7226#discussion_r33906339","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/7226","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/33906339"},"html":{"href":"https://github.com/apache/spark/pull/7226#discussion_r33906339"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/7226"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/7226","id":39216605,"html_url":"https://github.com/apache/spark/pull/7226","diff_url":"https://github.com/apache/spark/pull/7226.diff","patch_url":"https://github.com/apache/spark/pull/7226.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/7226","number":7226,"state":"open","locked":false,"title":"[SPARK-8753][SQL][WIP] Create an IntervalType data type","user":{"login":"cloud-fan","id":3182036,"avatar_url":"https://avatars.githubusercontent.com/u/3182036?v=3","gravatar_id":"","url":"https://api.github.com/users/cloud-fan","html_url":"https://github.com/cloud-fan","followers_url":"https://api.github.com/users/cloud-fan/followers","following_url":"https://api.github.com/users/cloud-fan/following{/other_user}","gists_url":"https://api.github.com/users/cloud-fan/gists{/gist_id}","starred_url":"https://api.github.com/users/cloud-fan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cloud-fan/subscriptions","organizations_url":"https://api.github.com/users/cloud-fan/orgs","repos_url":"https://api.github.com/users/cloud-fan/repos","events_url":"https://api.github.com/users/cloud-fan/events{/privacy}","received_events_url":"https://api.github.com/users/cloud-fan/received_events","type":"User","site_admin":false},"body":"We need a new data type to represent time intervals. Because we can't determine how many days in a month, so we need year-month interval type and day-time interval type, like hive did.\r\n\r\nHowever, we need a further discussion to decide the detail of interval type syntax. Hive support `interval '30-0' year to month` and `interval '3 0:0:0' day to second`. Oracle has a detail definition of [interval syntax](http://docs.oracle.com/cd/B19306_01/server.102/b14200/sql_elements003.htm#i38598), which is very similar to hive's.\r\n\r\nBecause we use number of 100ns as value of `TimestampType`, so it may not makes sense to support nano second unit.\r\n\r\nTODO:\r\n* complete the syntax of interval literal.\r\n* improve doc and test.\r\n","created_at":"2015-07-05T06:11:52Z","updated_at":"2015-07-06T05:07:54Z","closed_at":null,"merged_at":null,"merge_commit_sha":"a507e17b2f0f2b8f19faf7335624f15209945fdc","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/7226/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/7226/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/7226/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/1adbae155a7bc4f2bc6e5661c7a99dfe064683d5","head":{"label":"cloud-fan:interval","ref":"interval","sha":"1adbae155a7bc4f2bc6e5661c7a99dfe064683d5","user":{"login":"cloud-fan","id":3182036,"avatar_url":"https://avatars.githubusercontent.com/u/3182036?v=3","gravatar_id":"","url":"https://api.github.com/users/cloud-fan","html_url":"https://github.com/cloud-fan","followers_url":"https://api.github.com/users/cloud-fan/followers","following_url":"https://api.github.com/users/cloud-fan/following{/other_user}","gists_url":"https://api.github.com/users/cloud-fan/gists{/gist_id}","starred_url":"https://api.github.com/users/cloud-fan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cloud-fan/subscriptions","organizations_url":"https://api.github.com/users/cloud-fan/orgs","repos_url":"https://api.github.com/users/cloud-fan/repos","events_url":"https://api.github.com/users/cloud-fan/events{/privacy}","received_events_url":"https://api.github.com/users/cloud-fan/received_events","type":"User","site_admin":false},"repo":{"id":19689699,"name":"spark","full_name":"cloud-fan/spark","owner":{"login":"cloud-fan","id":3182036,"avatar_url":"https://avatars.githubusercontent.com/u/3182036?v=3","gravatar_id":"","url":"https://api.github.com/users/cloud-fan","html_url":"https://github.com/cloud-fan","followers_url":"https://api.github.com/users/cloud-fan/followers","following_url":"https://api.github.com/users/cloud-fan/following{/other_user}","gists_url":"https://api.github.com/users/cloud-fan/gists{/gist_id}","starred_url":"https://api.github.com/users/cloud-fan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cloud-fan/subscriptions","organizations_url":"https://api.github.com/users/cloud-fan/orgs","repos_url":"https://api.github.com/users/cloud-fan/repos","events_url":"https://api.github.com/users/cloud-fan/events{/privacy}","received_events_url":"https://api.github.com/users/cloud-fan/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/cloud-fan/spark","description":"Mirror 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