feat: [+] #337 array_sort of structs & equals null safe functions

[eruizalo]

Description

This PR contains two new functions for doric:

• Equals null safe: <=>
• Sort arrays for structs: colArray[Row]("value").sortBy(CName("name"), CNameOrd("age", Desc)) is available instead of createng ad-hoc sort functions or using ad-hoc expressions like:

f.expr("array_sort(value, (l, r) -> case " +
  // name ASC
  "when l.name < r.name then -1 " +
  "when l.name > r.name then 1 " +
  "else ( case" +
  // age DESC
  "  when l.age > r.age then -1 " +
  "  when l.age < r.age then 1 " +
  "  else 0 end " +
  ") end)"
)

Related Issue and dependencies

• Resolves [Feature request]: Custom array_sort function for structs #337
• Depends on N/A

How Has This Been Tested?

• This pull request contains appropriate tests?:
  • YES

[github-actions]

This is an auto-generated comment created by:

• Date : 2023-04-19 17:11:17 +0000 (UTC)
• Workflow : PR comment
• Job name : create_test_summary_report
• Run : 4746039744
• Commit : 9fdd6c3 feat: [+] null first/last order options

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/4744984250 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
3.2.2
3.2
3.3.0
3.3.1
3.3

[codecov]

Codecov Report

Merging #338 (9fdd6c3) into main (55f96b9) will increase coverage by 0.06%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #338      +/-   ##
==========================================
+ Coverage   97.42%   97.49%   +0.06%     
==========================================
  Files          60       61       +1     
  Lines        1164     1194      +30     
  Branches       19       21       +2     
==========================================
+ Hits         1134     1164      +30     
  Misses         30       30              

Flag	Coverage Δ
spark-2.4.x	94.42% <25.00%> (-0.27%)	⬇️
spark-3.0.x	96.58% <100.00%> (+0.10%)	⬆️
spark-3.1.x	97.36% <100.00%> (+0.07%)	⬆️
spark-3.2.x	97.59% <100.00%> (+0.06%)	⬆️
spark-3.3.x	97.59% <100.00%> (+0.06%)	⬆️

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Impacted Files	Coverage Δ
core/src/main/scala/doric/CNameOrd.scala	100.00% <100.00%> (ø)
...re/src/main/scala/doric/syntax/CommonColumns.scala	100.00% <100.00%> (ø)
....1_3.2_3.3/scala/doric/syntax/ArrayColumns3x.scala	100.00% <100.00%> (ø)

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