GitHub user cloud-fan opened a pull request: https://github.com/apache/spark/pull/15434
[SPARK-17873][SQL] ALTER TABLE RENAME TO should allow users to specify database in destination table name ## What changes were proposed in this pull request? In #14955 , we forbid users to specify database of destination table in ALTER TABLE RENAME TO, to be consistent with other database systems and also make it easier to rename tables in non-current database, e.g. users can write `ALTER TABLE db1.tbl RENAME TO tbl2`, instead of `ALTER TABLE db1.tbl RENAME TO db1.tbl2`. However, this is a breaking change. Users may already have queries that specify database of destination table in ALTER TABLE RENAME TO. This PR reverts most of #14955 , and simplify the usage of ALTER TABLE RENAME TO by making database of source table the default database of destination table, instead of current database, so that users can still write `ALTER TABLE db1.tbl RENAME TO tbl2`. ## How was this patch tested? The added back tests and some new tests. You can merge this pull request into a Git repository by running: $ git pull https://github.com/cloud-fan/spark revert Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/15434.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #15434 ---- commit d14c8629b8815dd2a8aa5ed720d699b235c54be0 Author: Wenchen Fan <wenc...@databricks.com> Date: 2016-10-11T08:47:37Z temp commit 393dc6542bb207f812a4af57211ad5e2a3a94dc5 Author: Wenchen Fan <wenc...@databricks.com> Date: 2016-10-11T14:29:35Z fix RENAME TO ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org