bug(tianmu):Server crashed, when execute select val, val >= '2010-02-22 18:35:23' from (select * from timetest) as A; (#981)

[isredstar]

Summary about this PR

Issue Number: close #981

Tests Check List

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

Changelog

• New Feature
• Bug Fix
• Performance Improvement
• Build/Testing/CI/CD
• Documentation
• Not for changelog (changelog entry is not required)

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features

[mergify]

This pull request's title should follow requirements next. @isredstar please check it 👇.

Valid format:

fix(vc): fix sth..... (#3306)
  ^         ^---------^  ^----^
  |         |            |
  |         +            +-> you issue id.
  |         |
  |         +-> Summary in present tense.
  |
  +-------> Type: feat, fix, docs, workflow, style, refactor, test, website, chore

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• feat: new feature for stonedb
• fix: bug fix for stonedb
• docs: changes to the documentation
• workflow: ci/cd in .github
• perf: Changes to improve code performance
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• style: formatting, missing semi colons, etc; no production code change
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• website
• chore: updating grunt tasks etc; no production code change

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[codecov]

Codecov Report

Base: 43.13% // Head: 43.13% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (4c66e71) compared to base (923c991).
Patch has no changes to coverable lines.

❗ Current head 4c66e71 differs from pull request most recent head d34bba2. Consider uploading reports for the commit d34bba2 to get more accurate results

Additional details and impacted files

@@               Coverage Diff                @@
##           stonedb-5.7-dev    #1321   +/-   ##
================================================
  Coverage            43.13%   43.13%           
================================================
  Files                 1830     1830           
  Lines               396385   396374   -11     
================================================
- Hits                170961   170958    -3     
+ Misses              225424   225416    -8     

Impacted Files	Coverage Δ
sql/protocol_classic.cc	46.27% <ø> (ø)
storage/innobase/include/ut0mutex.ic	71.42% <0.00%> (-23.81%)	⬇️
storage/innobase/buf/buf0rea.cc	54.63% <0.00%> (-5.68%)	⬇️
storage/innobase/mach/mach0data.cc	83.78% <0.00%> (-5.41%)	⬇️
storage/innobase/row/row0umod.cc	63.46% <0.00%> (-3.21%)	⬇️
storage/innobase/include/ut0lst.h	81.06% <0.00%> (-1.95%)	⬇️
storage/innobase/mtr/mtr0mtr.cc	69.62% <0.00%> (-1.41%)	⬇️
storage/innobase/include/ib0mutex.h	71.82% <0.00%> (-0.75%)	⬇️
strings/ctype-simple.c	60.86% <0.00%> (-0.51%)	⬇️
storage/tianmu/core/pack_str.cpp	63.19% <0.00%> (-0.45%)	⬇️
... and 31 more

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[hustjieke]

LGTM