planner: do not set AnnQuery when TopK = MaxUint32

[Lloyd-Pottiger]

What problem does this PR solve?

Issue Number: ref #54245

Problem Summary:

What changed and how does it work?

When p.AnnIndexExtra.PushDownQueryInfo.TopK == math.MaxUint32, there is no need to set AnnQuery in TableScan/PartitionTableScan, since it means do not use vector index.

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

[tiprow]

Hi @Lloyd-Pottiger. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 75.8135%. Comparing base (3047328) to head (b4d3f11).
Report is 159 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #57307        +/-   ##
================================================
+ Coverage   72.9496%   75.8135%   +2.8639%     
================================================
  Files          1667       1677        +10     
  Lines        460833     492288     +31455     
================================================
+ Hits         336176     373221     +37045     
+ Misses       103971      98896      -5075     
+ Partials      20686      20171       -515     

Flag	Coverage Δ
integration	45.7027% <0.0000%> (?)
unit	74.8871% <0.0000%> (+2.5441%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.7673% <ø> (ø)
parser	∅ <ø> (∅)
br	47.9664% <ø> (+2.8926%)	⬆️

[Lloyd-Pottiger]

/cc @winoros @hawkingrei @breezewish

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: breezewish, winoros

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-12 09:43:51.521928463 +0000 UTC m=+349393.712797461: ☑️ agreed by breezewish.
• 2024-11-29 03:29:44.824112294 +0000 UTC m=+779972.443766800: ☑️ agreed by winoros.

[tiprow]

@Lloyd-Pottiger: 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
fast_test_tiprow	b4d3f11	link	true	/test fast_test_tiprow
tidb_parser_test	b4d3f11	link	true	/test tidb_parser_test

Full PR test history. Your PR dashboard.

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