GitHub user xccui opened a pull request: https://github.com/apache/flink/pull/4977
[FLINK-7996] [table] Add support for (left.time = right.time) predicates to window join ## What is the purpose of the change This PR adds `left.time = right.time` predicates support for time-windowed join in Table API and SQL. ## Brief change log - Change `WindowJoinUtil.extractWindowBoundsFromPredicate()` to accept single euqi-time predicate. - Add tests for the new predicate. - Update the documents. ## Verifying this change This change can be verified by the added tests in `JoinTest` and `JoinITCase`. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no) - The serializers: (yes / no / don't know) - The runtime per-record code paths (performance sensitive): (no) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no) - The S3 file system connector: (no) ## Documentation - Does this pull request introduce a new feature? (no) - If yes, how is the feature documented? (docs) You can merge this pull request into a Git repository by running: $ git pull https://github.com/xccui/flink FLINK-7996 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/4977.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 #4977 ---- commit 03d54c672f4a529c1cf0e3af3e74d60fb37febb7 Author: Xingcan Cui <xingc...@gmail.com> Date: 2017-11-07T17:17:57Z [FLINK-7996][table]Add support for (left.time = right.time) predicates to window join ---- ---