Support Arithmetic function INDEX

[jbl428]

Motivation

• Support an arithmetic function INDEX.

Modifications

• Add jpql model and serializer for INDEX

Commit Convention Rule

• Please commit your modification based by conventional commit:

Commit type	Description
feat	New Feature
fix	Fix bug
docs	Documentation only changed
ci	Change CI configuration
refactor	Not a bug fix or add feature, just refactoring code
test	Add Test case or fix wrong test case
style	Only change the code style(ex. white-space, formatting)
chore	It refers to minor tasks such as library version upgrade, typo correction, etc.

• If you want to add some more commit type please describe it on the Pull Request

Result

• The arithmetic function index is added.

Closes

• Support Arithmetic function INDEX #598

[shouwn]

It seems that the INDEX function can take an alias of join as a parameter, so shouldn't the type of the parameter be Expressionable?

[jbl428]

Ahh, you are right 😄

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (9da2399) 66.47% compared to head (4fc4eb4) 66.56%.
Report is 12 commits behind head on develop.

Files	Patch %	Lines
...render/jpql/serializer/impl/JpqlIndexSerializer.kt	83.33%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #630      +/-   ##
===========================================
+ Coverage    66.47%   66.56%   +0.09%     
===========================================
  Files          467      471       +4     
  Lines         4760     4779      +19     
  Branches       277      277              
===========================================
+ Hits          3164     3181      +17     
- Misses        1539     1541       +2     
  Partials        57       57              

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[shouwn]

Thanks for your help!