morrySnow opened a new pull request, #64825:
URL: https://github.com/apache/doris/pull/64825
### What problem does this PR solve?
Issue Number: None
Related PR: None
Problem Summary: `array_sort` accepts a lambda comparator, but a lambda with
a non-binary parameter list could pass analysis and reach later planning or
execution paths. This PR validates that `array_sort` lambda arguments are
exactly the two comparator parameters and adds FE and regression coverage for
the invalid single-argument lambda case.
### Release note
Reject `array_sort` lambda arguments that are not binary comparator lambdas.
### Check List (For Author)
- Test: Regression test / Unit Test
- Unit Test: `./run-fe-ut.sh --run
org.apache.doris.nereids.rules.analysis.CheckExpressionLegalityTest`
- Regression test: `./run-regression-test.sh --run -d
nereids_function_p0 -s load`
- Regression test: `./run-regression-test.sh --run -d
nereids_function_p0/scalar_function -s nereids_scalar_fn_Array2`
- Behavior changed: Yes. Invalid `array_sort` lambda arity now fails during
analysis.
- Does this need documentation: No
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