ranger: handle decimal overflow properly when building index ranges (#23535)

[ti-srebot]

cherry-pick #23535 to release-5.0
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/23551

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git push [email protected]:ti-srebot/tidb.git pr/23551:release-5.0-1915517c0c0d

---

What problem does this PR solve?

Issue Number: close #23483

Problem Summary:

Planner reports error for a query.

What is changed and how it works?

What's Changed: Ignore the overflow error for decimal type in ranger.

How it Works: zeroMyDecimal would be returned if overflow error occurs, so convertPoint would adjust the excl of the boundary accordingly, and impossible ranges would be removed by consequent validIntervals().

Related changes

• Need to cherry-pick to the release branch

Check List

Tests

• Unit test

Side effects

N/A

Release note

• Handle decimal overflow properly when building index ranges

[ti-srebot]

/run-all-tests

[ti-srebot]

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

[eurekaka]

/run-check_dev

[eurekaka]

/run-unit-test

[time-and-fate]

/lgtm

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• time-and-fate
• winoros

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[eurekaka]

/run-all-tests

[eurekaka]

/run-check_dev_2

[eurekaka]

/run-check_dev_2

[lilinghai]

/run-check_dev_2

[eurekaka]

/run-all-tests