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planner: outer merge join cannot keep the prop of its inner child #33359

Merged
merged 3 commits into from
Mar 24, 2022
Merged

planner: outer merge join cannot keep the prop of its inner child #33359

merged 3 commits into from
Mar 24, 2022

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winoros
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@winoros winoros commented Mar 23, 2022

What problem does this PR solve?

Issue Number: close #33042

Problem Summary:

If the merge join is outer join. We cannot make sure that its output can keep the input order of the inner side.

What is changed and how it works?

Reject the mentioned case.

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No code

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

None

@winoros winoros force-pushed the merge-join-right-prop-cannot-pass branch from aeeb88a to 4ed6fbd Compare March 23, 2022 16:01
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ti-chi-bot commented Mar 23, 2022 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • AilinKid
  • XuHuaiyu

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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@ti-chi-bot ti-chi-bot added do-not-merge/needs-triage-completed release-note-none Denotes a PR that doesn't merit a release note. size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Mar 23, 2022
fixdb
fixdb reviewed Mar 23, 2022
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planner/core/exhaust_physical_plans.go
}
if p.JoinType == RightOuterJoin && hasLeftColInProp {
return nil
}
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Do we support full outer join?

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we don't have that

AilinKid
AilinKid approved these changes Mar 24, 2022
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LGTM

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sre-bot commented Mar 24, 2022 •
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Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/1ad6dbd702811a94709ccb6e7d32d38878eac268

XuHuaiyu
XuHuaiyu approved these changes Mar 24, 2022
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LGTM

@ti-chi-bot ti-chi-bot added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Mar 24, 2022
@XuHuaiyu XuHuaiyu added the type/bugfix This PR fixes a bug. label Mar 24, 2022
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/merge

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This pull request has been accepted and is ready to merge.

Commit hash: a0d2cac

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Mar 24, 2022
@ti-chi-bot ti-chi-bot merged commit 1287eab into pingcap:master Mar 24, 2022
@ti-srebot ti-srebot mentioned this pull request Mar 24, 2022
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ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Mar 24, 2022
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cherry pick pingcap#33359 to release-4.0
a33d7f3 
Signed-off-by: ti-srebot <[email protected]>
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cherry pick to release-4.0 in PR #33369

@winoros winoros deleted the merge-join-right-prop-cannot-pass branch March 24, 2022 03:45
ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Mar 24, 2022
@winoros @ti-srebot
cherry pick pingcap#33359 to release-5.0
342ad47 
Signed-off-by: ti-srebot <[email protected]>
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cherry pick to release-5.0 in PR #33371

ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Mar 24, 2022
@winoros @ti-srebot
cherry pick pingcap#33359 to release-5.1
f4ce718 
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cherry pick to release-5.1 in PR #33372

ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Mar 24, 2022
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cherry pick pingcap#33359 to release-5.2
8e7ebe3 
Signed-off-by: ti-srebot <[email protected]>
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cherry pick to release-5.2 in PR #33373

ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Mar 24, 2022
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cherry pick pingcap#33359 to release-5.3
5742215 
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cherry pick to release-5.3 in PR #33374

ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Mar 24, 2022
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cherry pick pingcap#33359 to release-5.4
a8b6ff6 
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cherry pick to release-5.4 in PR #33375

ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Mar 24, 2022
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cherry pick pingcap#33359 to release-6.0
71ccc06 
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cherry pick to release-6.0 in PR #33376

ti-chi-bot pushed a commit that referenced this pull request Mar 25, 2022
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planner: outer merge join cannot keep the prop of its inner child (#3…
533a7f6 
…3359) (#33376)

close #33042
ti-chi-bot pushed a commit that referenced this pull request Apr 15, 2022
@ti-srebot
planner: outer merge join cannot keep the prop of its inner child (#3…
ae5b88b 
…3359) (#33373)

close #33042
ti-chi-bot pushed a commit that referenced this pull request Apr 27, 2022
@ti-srebot
planner: outer merge join cannot keep the prop of its inner child (#3…
2a86e88 
…3359) (#33375)

close #33042
ti-chi-bot pushed a commit that referenced this pull request Jun 17, 2022
@ti-srebot
planner: outer merge join cannot keep the prop of its inner child (#3…
61d09f4 
…3359) (#33374)

close #33042
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@fixdb fixdb fixdb left review comments

@AilinKid AilinKid AilinKid approved these changes

@XuHuaiyu XuHuaiyu XuHuaiyu approved these changes

@time-and-fate time-and-fate Awaiting requested review from time-and-fate

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Successfully merging this pull request may close these issues.

Merge Join executed incorrect resultset which returned empty resultset
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@winoros @ti-chi-bot @sre-bot @XuHuaiyu @ti-srebot @fixdb @AilinKid