fix: [~] child dynamic accessor only for struct columns (issue #265)

[eruizalo]

Description

Explained in the issue

Related Issue and dependencies

• Resolves [Bug report]: The selectDynamic for DoricColumn[Row] makes hard to read the errors of missing methods #265
• Depends on N/A

How Has This Been Tested?

• This pull request contains appropriate tests?:
  • YES

[codecov]

Codecov Report

Merging #269 (c781da3) into main (a4cd92a) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #269   +/-   ##
=======================================
  Coverage   97.42%   97.42%           
=======================================
  Files          60       60           
  Lines        1163     1164    +1     
  Branches       14       19    +5     
=======================================
+ Hits         1133     1134    +1     
  Misses         30       30           

Flag	Coverage Δ
spark-2.4.x	94.69% <100.00%> (+0.01%)	⬆️
spark-3.0.x	96.48% <100.00%> (+<0.01%)	⬆️
spark-3.1.x	97.29% <100.00%> (+<0.01%)	⬆️
spark-3.2.x	97.53% <100.00%> (+<0.01%)	⬆️
spark-3.3.x	97.53% <100.00%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
core/src/main/scala/doric/DoricColumn.scala	66.67% <ø> (ø)
core/src/main/scala/doric/syntax/DStructs.scala	100.00% <100.00%> (ø)

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[github-actions]

This is an auto-generated comment created by:

• Date : 2023-02-03 11:48:45 +0000 (UTC)
• Workflow : PR comment
• Job name : create_test_summary_report
• Run : 4083849694
• Commit : c781da3 fix: [~] child dynamic accessor only for struct columns (issue [Bug report]: The selectDynamic for DoricColumn[Row] makes hard to read the errors of missing methods #265)

Actor	Triggering actor	Sender
eruizalo	eruizalo	eruizalo
Triggered by: Workflow name: "CI" at .github/workflows/ci.yml URL: https://github.com/hablapps/doric/actions/runs/4083725256 on workflow_run:completed

Test summary report 📊

Spark version	testing
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.6
2.4.7
2.4
3.0.0
3.0.1
3.0.2
3.0
3.1.0
3.1.1
3.1.2
3.1
3.2.0
3.2.1
3.2
3.3.0
3.3