fix(tianmu): fix query exists with primary key (#971 #944)

[adofsauron]

Summary about this PR

Issue Number: close #971 #944

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]

Thanks for the contribution!
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[lujiashun]

LGTM

[codecov]

Codecov Report

Base: 33.74% // Head: 33.74% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (9efb8fc) compared to base (f534557).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           stonedb-5.7-dev    #1053      +/-   ##
===================================================
- Coverage            33.74%   33.74%   -0.01%     
===================================================
  Files                 1807     1807              
  Lines               394958   394959       +1     
===================================================
- Hits                133264   133263       -1     
- Misses              261694   261696       +2     

Impacted Files	Coverage Δ
storage/tianmu/core/descriptor.cpp	56.67% <100.00%> (-0.07%)	⬇️
storage/tianmu/core/descriptor.h	71.73% <100.00%> (+0.62%)	⬆️
storage/tianmu/index/tianmu_table_index.cpp	53.01% <0.00%> (-12.66%)	⬇️
storage/tianmu/index/kv_transaction.cpp	63.15% <0.00%> (-7.02%)	⬇️
storage/innobase/include/dict0priv.ic	70.58% <0.00%> (-5.89%)	⬇️
storage/tianmu/vc/single_column.h	83.72% <0.00%> (-4.66%)	⬇️
storage/tianmu/core/tianmu_attr_exqp.cpp	43.27% <0.00%> (-3.95%)	⬇️
storage/tianmu/index/rdb_meta_manager.cpp	69.29% <0.00%> (-3.84%)	⬇️
storage/tianmu/vc/virtual_column_base.h	59.21% <0.00%> (-1.32%)	⬇️
storage/innobase/dict/dict0load.cc	45.45% <0.00%> (-1.22%)	⬇️
... and 27 more

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