planner: fix index out of range in constructIndexJoinInnerSideTask (#54534)

[ti-chi-bot]

This is an automated cherry-pick of #54534

What problem does this PR solve?

Issue Number: close #54535

Problem Summary:

When set system variable tidb_enable_inl_join_inner_multi_pattern to ON, the following SQL will get an error.

set GLOBAL tidb_enable_inl_join_inner_multi_pattern='ON';
create table ta(a1 int, a2 int, a3 int, index idx_a(a1));
create table tb(b1 int, b2 int, b3 int, index idx_b(b1));
explain SELECT /*+ inl_join(tmp) */ * FROM ta, (SELECT b1, COUNT(b3) AS cnt FROM tb GROUP BY b1, b2) as tmp where ta.a1 = tmp.b1;

ERROR 1105 (HY000): runtime error: index out of range [1] with length 1

What changed and how does it work?

Check List

Tests

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

  • I checked and no code files have been changed.

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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

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@ti-chi-bot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
idc-jenkins-ci-tidb/unit-test	41387d3	link	true	/test unit-test
idc-jenkins-ci-tidb/build	41387d3	link	true	/test build
idc-jenkins-ci-tidb/check_dev_2	41387d3	link	true	/test check-dev2
idc-jenkins-ci-tidb/mysql-test	41387d3	link	true	/test mysql-test
idc-jenkins-ci-tidb/check_dev	41387d3	link	true	/test check-dev

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[fixdb]

@joechenrh Can you fix the conflict?

[joechenrh]

@joechenrh Can you fix the conflict?

It seems that not all the changes from https://github.com/pingcap/tidb/pull/51354/files have been applied in release8-1. I don't know whether this PR should be cherry-picked to this branch.

[fixdb]

It seems that not all the changes from https://github.com/pingcap/tidb/pull/51354/files have been applied in release8-1. I don't know whether this PR should be cherry-picked to this branch.

You are right, I will close this cherry-pick.

[ti-chi-bot]

This cherry pick PR is for a release branch and has not yet been approved by triage owners.
Adding the do-not-merge/cherry-pick-not-approved label.

To merge this cherry pick:

1. It must be approved by the approvers firstly.
2. AFTER it has been approved by approvers, please wait for the cherry-pick merging approval from triage owners.

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