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planner: fix panic when the join key is scalarFunction (#30002)#30778

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ti-chi-bot merged 3 commits intopingcap:release-5.0from
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planner: fix panic when the join key is scalarFunction (#30002)#30778
ti-chi-bot merged 3 commits intopingcap:release-5.0from
ti-srebot:release-5.0-05ccb8a206da

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@ti-srebot ti-srebot commented Dec 16, 2021 •
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cherry-pick #30002 to release-5.0
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/30778

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/tidb.git pr/30778:release-5.0-05ccb8a206da

Signed-off-by: yisaer disxiaofei@163.com

What problem does this PR solve?

Issue Number: close #29401

Problem Summary:

If one side of the join key is string, and the another is json, the expression of the string would be cast to json and marked ParseToJSONFlag which will let WrapWithCastAsJSON wrap extra cast function.

In order to avoid this problem, we remove ParseToJSONFlag temporary during updateEQCond.

The final explain info result for the original issue is like following:

mysql> explain select /*+ inl_hash_join(t1) */ * from t t1 join t t2 on t1.b=t2.e;
+-----------------------------+----------+-----------+---------------+---------------------------------------------------------------------------------------------------------------+
| id                          | estRows  | task      | access object | operator info                                                                                                 |
+-----------------------------+----------+-----------+---------------+---------------------------------------------------------------------------------------------------------------+
| HashJoin_8                  | 12500.00 | root      |               | inner join, equal:[eq(Column#15, test.t.e)]                                                                   |
| ├─TableReader_14(Build)     | 10000.00 | root      |               | data:TableFullScan_13                                                                                         |
| │ └─TableFullScan_13        | 10000.00 | cop[tikv] | table:t2      | keep order:false, stats:pseudo                                                                                |
| └─Projection_10(Probe)      | 10000.00 | root      |               | test.t.id, test.t.a, test.t.b, test.t.c, test.t.d, test.t.e, test.t.f, cast(test.t.b, json BINARY)->Column#15 |
|   └─TableReader_12          | 10000.00 | root      |               | data:TableFullScan_11                                                                                         |
|     └─TableFullScan_11      | 10000.00 | cop[tikv] | table:t1      | keep order:false, stats:pseudo                                                                                |
+-----------------------------+----------+-----------+---------------+---------------------------------------------------------------------------------------------------------------+
6 rows in set, 1 warning (0.00 sec)

What is changed and how it works?

This request fixs this case.

Check List

Tests

  • Unit test

Release note

Fix the bug that sql got cancel if including json column joins char column.

@Yisaer @ti-srebot
cherry pick pingcap#30002 to release-5.0
c1380a1 
Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
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ti-chi-bot commented Dec 16, 2021 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • XuHuaiyu
  • Yisaer

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ti-srebot commented Dec 16, 2021

/run-all-tests

@ti-chi-bot ti-chi-bot added do-not-merge/release-note-label-needed Indicates that a PR should not merge because it's missing one of the release note labels. release-note Denotes a PR that will be considered when it comes time to generate release notes. and removed do-not-merge/release-note-label-needed Indicates that a PR should not merge because it's missing one of the release note labels. labels Dec 16, 2021
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@ti-srebot ti-srebot added size/S Denotes a PR that changes 10-29 lines, ignoring generated files. type/5.0-cherry-pick type/bugfix This PR fixes a bug. labels Dec 16, 2021
@ti-chi-bot ti-chi-bot removed the size/S Denotes a PR that changes 10-29 lines, ignoring generated files. label Dec 16, 2021
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ti-srebot commented Dec 16, 2021

@Yisaer you're already a collaborator in bot's repo.

@ti-chi-bot ti-chi-bot added the size/M Denotes a PR that changes 30-99 lines, ignoring generated files. label Dec 16, 2021
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fix conflict
0387a92 
Signed-off-by: yisaer <disxiaofei@163.com>
@ti-chi-bot ti-chi-bot added size/S Denotes a PR that changes 10-29 lines, ignoring generated files. and removed size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Dec 16, 2021
@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Dec 16, 2021
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XuHuaiyu approved these changes Dec 16, 2021
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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 Dec 16, 2021
@zhouqiang-cl zhouqiang-cl added the cherry-pick-approved Cherry pick PR approved by release team. label Dec 16, 2021
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zhouqiang-cl commented Dec 16, 2021

/merge

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ti-chi-bot commented Dec 16, 2021

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

DetailsCommit hash: 0387a92

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Dec 16, 2021
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ti-chi-bot commented Dec 16, 2021

@ti-srebot: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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@ti-chi-bot ti-chi-bot merged commit 1b9e684 into pingcap:release-5.0 Dec 16, 2021
@zhouqiang-cl zhouqiang-cl added this to the v5.0.6 milestone Dec 21, 2021
@XuHuaiyu XuHuaiyu mentioned this pull request Dec 22, 2021
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@XuHuaiyu XuHuaiyu XuHuaiyu approved these changes

@chrysan chrysan Awaiting requested review from chrysan

@rebelice rebelice Awaiting requested review from rebelice

@winoros winoros Awaiting requested review from winoros

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