planner/cascades: add transformation rule PushLimitDownUnionAll. #14264
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
ghost
requested review from
francis0407 and
alivxxx
and removed request for
a team
francis0407
reviewed
Dec 27, 2019
48 tasks
francis0407
changed the title
francis0407
reviewed
Dec 28, 2019
zz-jason
reviewed
Dec 28, 2019
zz-jason
added
status/can-merge
|
Your auto merge job has been accepted, waiting for 14206 |
|
/run-all-tests |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
What problem does this PR solve?
This PR adds Transformation rule which pushes the limit down to unionall.
refer to: #13709
What is changed and how it works?
The logic is the same as pushdownTopN.
Check List
Tests
Code changes