[CHORE] Fix join alias test

[kevinzwang]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #3335 will improve performances by 41.34%

_{Comparing kevin/fix-join-alias-test (51fbe57) with main (25304eb)}

Summary

⚡ 1 improvements
✅ 16 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	kevin/fix-join-alias-test	Change
⚡	test_show[100 Small Files]	33.1 ms	23.4 ms	+41.34%

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.14%. Comparing base (dab006f) to head (51fbe57).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3335      +/-   ##
==========================================
- Coverage   77.32%   77.14%   -0.19%     
==========================================
  Files         677      677              
  Lines       82810    83479     +669     
==========================================
+ Hits        64035    64400     +365     
- Misses      18775    19079     +304     

see 14 files with indirect coverage changes

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