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[enhance](function) add a lambda functor version for array_sort (#57828)#62830

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[enhance](function) add a lambda functor version for array_sort (#57828)#62830
csun5285 wants to merge 1 commit intoapache:branch-4.1from
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@csun5285 csun5285 commented Apr 24, 2026

pick from master #57828

@wumeibanfa @csun5285
[enhance](function) add a lambda functor version for array_sort (apac…
9485252 
…he#57828)

add a lambda functor version for array_sort

Issue Number: apache#48203

Problem Summary:
```text
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| array_sort((x, y) -> CASE WHEN x IS NULL THEN -1
                                 WHEN y IS NULL THEN 1
                                 WHEN x < y THEN 1
                                 WHEN x = y THEN 0
                                 ELSE -1 END,
                                 [3, 2, null, 5, null, 1, 2]) |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| [null, null, 5, 3, 2, 2, 1]                                                                                                                                                                                                                                                                                               |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| array_sort((x, y) -> IF(length(x) < length(y), -1,  IF(length(x) = length(y), 0, 1)),  ['a', 'abcd', 'abc']) |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| ["a", "abc", "abcd"]                                                                                                                                                     |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
```
@csun5285 csun5285 requested a review from yiguolei as a code owner April 24, 2026 15:33
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Thearas commented Apr 24, 2026

Thank you for your contribution to Apache Doris.
Don't know what should be done next? See How to process your PR.

Please clearly describe your PR:

  1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
  2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
  3. What features were added. Why was this function added?
  4. Which code was refactored and why was this part of the code refactored?
  5. Which functions were optimized and what is the difference before and after the optimization?

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csun5285 commented Apr 24, 2026

run buildall

@hello-stephen
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hello-stephen commented Apr 24, 2026

BE Regression && UT Coverage Report

Increment line coverage 0.00% (0/1) 🎉

Increment coverage report
Complete coverage report

Category Coverage
Function Coverage 54.53% (20063/36791)
Line Coverage 35.53% (181912/512058)
Region Coverage 29.76% (133478/448494)
Branch Coverage 31.31% (59456/189901)

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hello-stephen commented Apr 24, 2026

FE Regression Coverage Report

Increment line coverage 15.49% (11/71) 🎉
Increment coverage report
Complete coverage report

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