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*: resolve select fields properly for coalesced columns of natural join (#25094) #30050

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merged 3 commits into from
Feb 9, 2022

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@ti-srebot ti-srebot commented Nov 23, 2021

cherry-pick #25094 to release-5.1
You can switch your code base to this Pull Request by using git-extras:

# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/30050

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git push [email protected]:ti-srebot/tidb.git pr/30050:release-5.1-ead31402bccd

What problem does this PR solve?

Issue Number: close #25041

Problem Summary:

Incompatible error when grouping on join.

What is changed and how it works?

What's Changed:

Specially mark the redundant columns incurred by natural join / using keyword in FieldName, and ignore them when resolving columns.

How it Works:

The problem was incurred by #21922 when trying to fix #6712. #21922 exposes the columns in redundantSchema to the schema of aggregation, which led to the ambiguity.

I have tried reverting the #21922 patch and finding the column in LogicalJoin.redundantSchema recursively when resolving the select fields, it can work in the plan building step, but would fail in the final ResolveIndices, because aggregation is a schema producer.

Related changes

N/A

Check List

Tests

  • Unit test

Side effects

N/A

Release note

Resolve select fields properly for coalesced columns of natural join

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ti-chi-bot commented Nov 23, 2021

[REVIEW NOTIFICATION]

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/run-all-tests

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@ti-srebot: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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@ti-srebot: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

@ti-chi-bot ti-chi-bot added the do-not-merge/release-note-label-needed Indicates that a PR should not merge because it's missing one of the release note labels. label Nov 23, 2021
@ti-srebot ti-srebot added component/expression sig/planner SIG: Planner size/M Denotes a PR that changes 30-99 lines, ignoring generated files. type/5.1-cherry-pick type/bugfix This PR fixes a bug. labels Nov 23, 2021
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@eurekaka you're already a collaborator in bot's repo.

@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Feb 9, 2022
@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 Feb 9, 2022
@VelocityLight VelocityLight added cherry-pick-approved Cherry pick PR approved by release team. and removed do-not-merge/cherry-pick-not-approved labels Feb 9, 2022
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/run-mysql-test

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/merge

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

Commit hash: ac1cd37

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Feb 9, 2022
@time-and-fate time-and-fate removed the do-not-merge/release-note-label-needed Indicates that a PR should not merge because it's missing one of the release note labels. label Feb 9, 2022
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/run-check_dev

@ti-chi-bot ti-chi-bot merged commit 11b1f7c into pingcap:release-5.1 Feb 9, 2022
@zhouqiang-cl zhouqiang-cl added this to the v5.1.4 milestone Feb 10, 2022
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